Color Magnetic Flux Tubes in Dense QCD. II: Effective World-Sheet Theory (2009)
Eto, Minoru, Nakano, Eiji, Nitta, Muneto
Color magnetic flux tubes appear in the color-flavor locked phase of high density QCD, which exhibits color superconductivity as well as superfluidity. They are non-Abelian superfluid vortices and...
Color Magnetic Flux Tubes in Dense QCD (2009)
QCD is expected to be in the color-flavor locking phase in high baryon density, which exhibits color superconductivity. The most fundamental topological objects in the color superconductor are...
Kihara, Hironobu, Nitta, Muneto, Sasaki, Misao, Yoo, Chul-Moon, Zaballa, Ignacio
We study cosmology of the Einstein-Yang-Mills theory in ten dimensions with a quartic term in the Yang-Mills field strength. We obtain analytically a class of cosmological solutions in which the...
Fractional Vortices and Lumps (2009)
Eto, Minoru, Fujimori, Toshiaki, Gudnason, Sven Bjarke, Konishi, Kenichi, Nagashima, Takayuki, Nitta, Muneto, ...
We study what might be called fractional vortices, vortex configurations with the minimum winding from the viewpoint of their topological stability, but which are characterized by various notable...
Non-Abelian Vortices in SO(N) and USp(N) Gauge Theories (2009)
Eto, Minoru, Fujimori, Toshiaki, Gudnason, Sven Bjarke, Konishi, Kenichi, Nagashima, Takayuki, Nitta, Muneto, ...
Non-Abelian BPS vortices in SO(N) x U(1) and USp(2N) x U(1) gauge theories are constructed in maximally color-flavor locked vacua. We study in detail their moduli and transformation properties under...
Dynamics of Strings between Domain Walls (2009)
Eto, Minoru, Fujimori, Toshiaki, Nagashima, Takayuki, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
Configurations of vortex-strings stretched between or ending on domain walls were previously found to be 1/4 BPS states. Among zero modes of string positions, the center of mass of strings in each...
Multiple Layer Structure of Non-Abelian Vortex (2009)
Eto, Minoru, Fujimori, Toshiaki, Nagashima, Takayuki, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
Bogomol'nyi-Prasad-Sommerfield (BPS) vortices in U(N) gauge theories have two layers corresponding to non-Abelian and Abelian fluxes, whose widths depend nontrivially on the ratio of U(1) and SU(N)...
Non-Abelian Global Vortices (2009)
Eto, Minoru, Nakano, Eiji, Nitta, Muneto
We study topologically stable non-Abelian global vortices in the U(N) linear sigma model. The profile functions of the solutions are numerically obtained. We investigate the behaviour of vortices in...
Colliding Waves on a Brane, the Big Bounce and Reconnection (2008)
We present a time-dependent solution of the Nambu-Goto action which represents two colliding waves moving at the speed of light. This solution can be decomposed into two distinct regions with...
Collision Dynamics and Gluon Rung of Non-Abelian Vortices (2008)
Kobayashi, Michikazu, Kawaguchi, Yuki, Nitta, Muneto, Ueda, Masahito
We investigate collision dynamics of two non-Abelian vortices and find that unlike Abelian vortices, they do not reconnect themselves but create a gluon rung between them. This affords direct...
Dynamics of Strings between Walls (2008)
Eto, Minoru, Fujimori, Toshiaki, Nagashima, Takayuki, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
Configurations of vortex-strings stretched between or ending on domain walls were previously found to be 1/4 Bogomol'nyi-Prasad-Sommerfield(BPS) states in N=2 supersymmetric gauge theories in 3+1...
Colliders and Brane Vector Phenomenology (2008)
Clark, T. E., Love, S. T., Nitta, Muneto, Ter Veldhuis, T., Xiong, C.
Brane world oscillations manifest themselves as massive vector gauge fields. Their coupling to the Standard Model is deduced using the method of nonlinear realizations of the spontaneously broken...
SO and USp Kahler and Hyper-Kahler Quotients and Lumps (2008)
Eto, Minoru, Fujimori, Toshiaki, Gudnason, Sven Bjarke, Nitta, Muneto, Ohashi, Keisuke
We study non-linear sigma models whose target spaces are the Higgs phases of supersymmetric SO and USp gauge theories by using the Kahler and hyper-Kahler quotient constructions. We obtain the...
Brane Vector Dynamics from Embedding Geometry (2008)
Clark, T. E., Love, S. T., Nitta, Muneto, Ter Veldhuis, T., Xiong, Chi
A Kaluza-Klein decomposition of higher dimensional gravity is performed in the flexible brane world scenario and the properties of the extra vectors resulting from this decomposition are explored....
Generalized Instantons on Complex Projective Spaces (2008)
Kihara, Hironobu, Nitta, Muneto
We study a class of generalized self-duality relations in gauge theories on the complex projective space with the Fubini-Study metric. Our theories consist of only gauge fields with gauge group U(n)....
Non-Abelian Strings in Hot or Dense QCD (2008)
Nakano, Eiji, Nitta, Muneto, Matsuura, Taeko
Different types of non-Abelian vortex-strings appear in dense or hot QCD, both of which possess non-Abelian internal orientation zero modes. We calculate the interaction between them and find the...
Intersecting Solitons, Amoeba and Tropical Geometry (2008)
Fujimori, Toshiaki, Nitta, Muneto, Ohta, Kazutoshi, Sakai, Norisuke, Yamazaki, Masahito
We study generic intersection (or web) of vortices with instantons inside, which is a 1/4 BPS state in the Higgs phase of five-dimensional N=1 supersymmetric U(Nc) gauge theory on R_t \times...
Domain Walls with Non-Abelian Clouds (2008)
Eto, Minoru, Fujimori, Toshiaki, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
Domain walls in U(N) gauge theories, coupled to Higgs scalar fields with degenerate masses, are shown to possess normalizable non-Abelian Nambu-Goldstone(NG) modes, which we call non-Abelian clouds....
Knots in a Spinor Bose-Einstein Condensate (2008)
Kawaguchi, Yuki, Nitta, Muneto, Ueda, Masahito
We show that knots of spin textures can be created in the polar phase of a spin-1 Bose-Einstein condensate, and discuss experimental schemes for their generation and probe, together with their...
Constructing Non-Abelian Vortices with Arbitrary Gauge Groups (2008)
Eto, Minoru, Fujimori, Toshiaki, Gudnason, Sven Bjarke, Konishi, Kenichi, Nitta, Muneto, Ohashi, Keisuke, ...
We construct the general vortex solution in the fully-Higgsed, color-flavor locked vacuum of a non-Abelian gauge theory, where the gauge group is taken to be the product of an arbitrary simple group...
Effective Lagrangian of Domain Wall Networks (2007)
Sakai, Norisuke, Eto, Minoru, Fujimori, Toshiaki, Nagashima, Takayuki, Nitta, Muneto, Ohashi, Keisuke
Domain wall networks are studied in N=2 supersymmetric U(N_C) gauge theory with N_F (>N_C) flavors. We find a systematic method to construct domain wall networks in terms of moduli matrices....
Brane Vector Phenomenology (2007)
Clark, T. E., Love, S. T., Nitta, Muneto, Ter Veldhuis, T., Xiong, C.
Local oscillations of the brane world are manifested as masssive vector fields. Their coupling to the Standard Model can be obtained using the method of nonlinear realizations of the spontaneously...
Non-Abelian Global Strings at Chiral Phase Transition (2007)
We construct non-Abelian global string solutions in the U(N)_L x U(N)_R linear sigma model. These strings are the most fundamental objects which are expected to form during the chiral phase...
Interactions of Non-Abelian Global Strings (2007)
Nakano, Eiji, Nitta, Muneto, Matsuura, Taeko
Non-Abelian global strings are expected to form during the chiral phase transition. They have orientational zero modes in the internal space, associated with the vector-like symmetry SU(N)_{L+R}...
Non-Abelian Strings in High Density QCD: Zero Modes and Interactions (2007)
Nakano, Eiji, Nitta, Muneto, Matsuura, Taeko
The most fundamental strings in high density color superconductivity are the non-Abelian semi-superfluid strings which have color gauge flux tube but behave as superfluid vortices in the energetic...
Dynamics of Domain Wall Networks (2007)
Eto, Minoru, Fujimori, Toshiaki, Nagashima, Takayuki, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
Networks or webs of domain walls are admitted in Abelian or non-Abelian gauge theory coupled to fundamental Higgs fields with complex masses. We examine the dynamics of the domain wall loops by using...
We construct nontopological string solutions with U(1) Noether charge in the Skyrme model with a pion mass term, and examine their stability by taking linear perturbations. The solution exhibits a...
On the moduli space of semilocal strings and lumps (2007)
Eto, Minoru, Evslin, Jarah, Konishi, Kenichi, Marmorini, Giacomo, Nitta, Muneto, Ohashi, Keisuke, ...
We study BPS non-abelian semilocal vortices in U(Nc) gauge theory with Nf flavors, Nf > Nc, in the Higgs phase. The moduli space for arbitrary winding number is described using the moduli matrix...
Exact Solutions of Einstein-Yang-Mills Theory with Higher-Derivative Coupling (2007)
Kihara, Hironobu, Nitta, Muneto
We construct a classical solution of an Einstein-Yang-Mills system with a fourth order term with respect to the field strength of the Yang-Mills field. The solution provides a spontaneous...
Statistical Mechanics of Vortices from D-branes and T-duality (2007)
Eto, Minoru, Fujimori, Toshiaki, Nitta, Muneto, Ohashi, Keisuke, Ohta, Kazutoshi, Sakai, Norisuke
We propose a novel and simple method to compute the partition function of statistical mechanics of local and semi-local BPS vortices in the Abelian-Higgs model and its non-Abelian extension on a...
Clark, T. E., Love, S. T., Nitta, Muneto, Ter Veldhuis, T., Xiong, C.
Coset methods are used to construct the action describing the dynamics associated with the spontaneous breaking of the Poincare symmetries of D dimensional space-time due to the embedding of a...
A Classical Solution in Six-dimensional Gauge Theory with Higher Derivative Coupling (2007)
Kihara, Hironobu, Nitta, Muneto
We show that the spin connection of the standard metric on a six-dimensional sphere gives an exact solution to the generalized self-dual equations suggested by Tchrakian some years ago. We work on an...
Effective Lagrangians on Domain Walls and Other Solitons (2007)
Sakai, Norisuke, Eto, Minoru, Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke
Maintaining the preserved supersymmetry helps to find the effective Lagrangian on the BPS background in gauge theories with eight supercharges. As concrete examples, we take 1/2 BPS domain walls. The...
Clark, T. E., Love, S. T., Nitta, Muneto, Ter Veldhuis, T., Xiong, C.
Coset methods are used to construct the action describing the dynamics associated with the spontaneous breaking of the local Poincare symmetries of D dimensional space-time due to the embedding of a...
Non-Abelian duality from vortex moduli: a dual model of color-confinement (2006)
Eto, Minoru, Ferretti, Luca, Konishi, Kenichi, Marmorini, Giacomo, Nitta, Muneto, Ohashi, Keisuke, ...
It is argued that the dual transformation of non-Abelian monopoles occurring in a system with gauge symmetry breaking G \longrightarrow H is to be defined by setting the low-energy H system in Higgs...
Effective Action of Domain Wall Networks (2006)
Eto, Minoru, Fujimori, Toshiaki, Nagashima, Takayuki, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
U(Nc) gauge theory with Nf fundamental scalars admits BPS junctions of domain walls. When the networks/webs of these walls contain loops, their size moduli give localized massless modes. We construct...
Non-Abelian duality from vortex moduli: a dual model of color-confinement (2006)
Eto, Minoru, Ferretti, Luca, Konishi, Kenichi, Marmorini, Giacomo, Nitta, Muneto, Ohashi, Keisuke, ...
It is argued that the dual transformation of non-Abelian monopoles occurring in a system with gauge symmetry breaking G -> H is to be defined by setting the low-energy H system in Higgs phase, so...
Universal Reconnection of Non-Abelian Cosmic Strings (2006)
Eto, Minoru, Hashimoto, Koji, Marmorini, Giacomo, Nitta, Muneto, Ohashi, Keisuke, Vinci, Walter
We show that local/semilocal strings in Abelian/non-Abelian gauge theories with critical couplings always reconnect classically in collision, by using moduli space approximation. The moduli matrix...
Domain Walls, The Extended Superconformal Algebra, and The Supercurrent (2006)
Clark, T. E., Nitta, Muneto, Ter Veldhuis, T.
The presence of a domain wall is shown to require a tensorial central charge extension of the superconformal algebra. The currents associated with the conformal central charges are constructed as...
Gauging Nonlinear Supersymmetry (2006)
Clark, T E, Love, S T, Nitta, Muneto, Ter Veldhuis, T
Coset methods are used to construct the action describing the dynamics associated with the spontaneous breaking of the local supersymmetries. The resulting action is an invariant form of the...
Solitons in Supersymmetric Gauge Theories: Moduli Matrix Approach (2006)
Eto, Minoru, Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
We review our recent works on solitons in U(Nc) gauge theories with Nf (>Nc) Higgs fields in the fundamental representation, which possess eight supercharges. The moduli matrix is proposed as a...
Non-Abelian Vortices of Higher Winding Numbers (2006)
Eto, Minoru, Konishi, Kenichi, Marmorini, Giacomo, Nitta, Muneto, Ohashi, Keisuke, Vinci, Walter, ...
We make a detailed study of the moduli space of winding number two (k=2) axially symmetric vortices (or equivalently, of co-axial composite of two fundamental vortices), occurring in U(2) gauge...
Non-integrability of Self-dual Yang-Mills-Higgs System (2006)
Inami, Takeo, Minakami, Shie, Nitta, Muneto
We examine integrability of self-dual Yang-Mills system in the Higgs phase, with taking simpler cases of vortices and domain walls. We show that the vortex equations and the domain-wall equations do...
Manifestly Supersymmetric Effective Lagrangians on BPS Solitons (2006)
Eto, Minoru, Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
A systematic method to obtain the effective Lagrangian on the BPS background in supersymmetric gauge theories is worked out, taking domain walls and vortices as concrete examples. The Lagrangian in...
Hyper-Kahler Sigma Models on (Co)tangent Bundles with SO(n) isometry (2006)
We construct N=2 supersymmetric nonlinear sigma models whose target spaces are tangent as well as cotangent bundles over the quadric surface Q^{n-2} = SO(n)/[SO(n-2)\times U(1)]. We use the...
Solitons in the Higgs phase -- the moduli matrix approach -- (2006)
Eto, Minoru, Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
We review our recent work on solitons in the Higgs phase. We use U(N_C) gauge theory with N_F Higgs scalar fields in the fundamental representation, which can be extended to possess eight...
Non-Abelian Vortices on Cylinder -- Duality between vortices and walls (2006)
Eto, Minoru, Fujimori, Toshiaki, Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Ohta, Kazutoshi, ...
We investigate vortices on a cylinder in supersymmetric non-Abelian gauge theory with hypermultiplets in the fundamental representation. We identify moduli space of periodic vortices and find that a...
Gauging Nonlinear Supersymmetry (2005)
Clark, T. E., Love, S. T., Nitta, Muneto, Ter Veldhuis, T.
Coset methods are used to construct the action describing the dynamics associated with the spontaneous breaking of the local supersymmetries. The resulting action is an invariant form of the...
Moduli Space of Non-Abelian Vortices (2005)
Eto, Minoru, Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
We completely determine the moduli space M_{N,k} of k-vortices in U(N) gauge theory with N Higgs fields in the fundamental representation. Its open subset for separated vortices is found as the...
D-brane Configurations for Domain Walls and Their Webs (2005)
Eto, Minoru, Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Ohta, Kazutoshi, Sakai, Norisuke
Supersymmetric U(Nc) gauge theory with Nf massive hypermultiplets in the fundamental representation admits various BPS solitons like domain walls and their webs. In the first part we show as a review...
Non-Abelian Webs of Walls (2005)
Eto, Minoru, Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
Domain wall junctions are studied in N=2 supersymmetric U(Nc) gauge theory with Nf(>Nc) flavors. We find that all three possibilities are realized for positive, negative and zero junction charges....
Skyrmions from Instantons inside Domain Walls (2005)
Eto, Minoru, Nitta, Muneto, Ohashi, Keisuke, Tong, David
Some years ago, Atiyah and Manton described a method to construct approximate Skyrmion solutions from Yang-Mills instantons. Here we present a dynamical realization of this construction using domain...
Nonlinear realization of local symmetries of AdS space (2005)
Clark, T E, Love, S T, Nitta, Muneto, Ter Veldhuis, T
Coset methods are used to construct the action describing the dynamics associated with the spontaneous breaking of the local symmetries of AdS_{d+1} space due to the embedding of an AdS_d brane. The...
Clark, T E, Love, S T, Nitta, Muneto, Ter Veldhuis, T
Coset methods are used to construct the action describing the dynamics of the (massive) Nambu-Goldstone scalar degree of freedom associated with the spontaneous breaking of the isometry group of...
Solitons in Supersymmetric Gauge Theories (2005)
Eto, Minoru, Isozumi, Youich, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
Recent results on BPS solitons in the Higgs phase of supersymmetric (SUSY) gauge theories with eight supercharges are reviewed. For U(N_C) gauge theories with the N_F(>N_C) hypermultiplets in the...
Eto, Minoru, Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke
We systematically classify 1/2, 1/4 and 1/8 BPS equations in SUSY gauge theories in d=6, 5, 4, 3 and 2 with eight supercharges, with gauge groups and matter contents being arbitrary. Instantons...
Eto, Minoru, Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
Webs of domain walls are constructed as 1/4 BPS states in d=4, N=2 supersymmetric U(Nc) gauge theories with Nf hypermultiplets in the fundamental representation. Web of walls can contain any numbers...
Nonlinear realization of local symmetries of AdS space (2005)
Clark, T. E., Love, S. T., Nitta, Muneto, Ter Veldhuis, T.
Coset methods are used to construct the action describing the dynamics associated with the spontaneous breaking of the local symmetries of AdS_{d+1} space due to the embedding of an AdS_d brane. The...
Global Structure of Moduli Space for BPS Walls (2005)
Eto, Minoru, Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Ohta, Kazutoshi, Sakai, Norisuke, ...
We study the global structure of the moduli space of BPS walls in the Higgs branch of supersymmetric theories with eight supercharges. We examine the structure in the neighborhood of a special...
Clark, T. E., Love, S. T., Nitta, Muneto, Ter Veldhuis, T.
Coset methods are used to construct the action describing the dynamics of the (massive) Nambu-Goldstone scalar degree of freedom associated with the spontaneous breaking of the isometry group of...
Instantons in the Higgs Phase (2004)
Eto, Minoru, Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
When instantons are put into the Higgs phase, vortices are attached to instantons. We construct such composite solitons as 1/4 BPS states in five-dimensional supersymmetric U(Nc) gauge theory with...
D-brane Construction for Non-Abelian Walls (2004)
Eto, Minoru, Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Ohta, Kazutoshi, Sakai, Norisuke
Supersymmetric U(Nc) gauge theory with Nf massive hypermultiplets in the fundamental representation is given by the brane configuration made of Nc fractional Dp-branes stuck at the Z_2 orbifold...
Conformal Sigma Models with Anomalous Dimensions and Ricci Solitons (2004)
We present new non-Ricci-flat Kahler metrics with U(N) and O(N) isometries as target manifolds of superconformally invariant sigma models with an anomalous dimension. They are so-called Ricci...
Walls and vortices in supersymmetric non-abelian gauge theories (2004)
Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
We review recent results on the BPS multi-wall solutions in supersymmetric U(N_C) gauge theories in five dimensions with N_F(>N_C) hypermultiplets in the fundamental representation. Total moduli...
Non-BPS Brane Dynamics And Dual Tensor Gauge Theory (2004)
Clark, T. E., Nitta, Muneto, Ter Veldhuis, T.
The action for the long wavelength oscillations of a non-BPS p=3 brane embedded in N=1, D=5 superspace is determined by means of the coset method. The D=4 world volume Nambu-Goldstone boson of broken...
Non-Abelian Walls and Vortices in Supersymmetric Theories (2004)
Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
We review recent results on solitons in supersymmetric (SUSY) non-Abelian gauge theories, focusing on our papers: hep-th/0405194, hep-th/0405129, and hep-th/0404198. We construct the BPS multi-wall...
Superconformal Symmetry, The Supercurrent And Non-BPS Brane Dynamics (2004)
Clark, T. E., Nitta, Muneto, Ter Veldhuis, T.
The Noether currents associated with the non-linearly realized super-Poincare' symmetries of the Green-Schwarz (Nambu-Goto-Akulov-Volkov) action for a non-BPS p=2 brane embedded in a N=1, D=4 target...
Generalized Monopoles in Six-dimensional Non-Abelian Gauge Theory (2004)
Kihara, Hironobu, Hosotani, Yutaka, Nitta, Muneto
A spherically symmetric monopole solution is found in SO(5) gauge theory with Higgs scalar fields in the vector representation in six-dimensional Minkowski spacetime. The action of the Yang-Mills...
Non-Abelian Walls in Supersymmetric Gauge Theories (2004)
Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
The Bogomol'nyi-Prasad-Sommerfield (BPS) multi-wall solutions are constructed in supersymmetric U(N_C) gauge theories in five dimensions with N_F(>N_C) hypermultiplets in the fundamental...
Effective Theory on Non-Abelian Vortices in Six Dimensions (2004)
Eto, Minoru, Nitta, Muneto, Sakai, Norisuke
Non-Abelian vortices in six spacetime dimensions are obtained for a supersymmetric U(N) gauge theory with N hypermultiplets in the fundamental representation. Massless (moduli) fields are identified...
All Exact Solutions of a 1/4 Bogomol'nyi-Prasad-Sommerfield Equation (2004)
Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
We obtain all possible solutions of a 1/4 Bogomol'nyi-Prasad-Sommerfield equation exactly, containing configurations made of walls, vortices and monopoles in the Higgs phase. We use supersymmetric...
Construction of Non-Abelian Walls and Their Complete Moduli Space (2004)
Isozumi, Youichi, Nitta, Muneto, Ohashi, Keisuke, Sakai, Norisuke
We present a systematic method to construct exactly all Bogomol'nyi-Prasad-Sommerfield (BPS) multi-wall solutions in supersymmetric (SUSY) U(N_C) gauge theories in five dimensions with N_F...
Domain Walls with Massive Hypermultiplets (2004)
Arai, Masato, Nitta, Muneto, Sakai, Norisuke
Massive hypermultiplets admit degenerate discrete vacua only if they form nonlinear sigma models or have gauge interaction. We discuss BPS domain walls in these theories. This talk is based on the...
Non-BPS Brane Dynamics And Duality (2004)
Clark, T. E., Nitta, Muneto, Ter Veldhuis, T.
The Green-Schwarz action for a non-BPS p=2 brane embedded in a N=1, D=4 target superspace is shown to be equivalent to the Nambu-Goto-Akulov-Volkov action obtained via the nonlinear realization of...
Massive Hyper-Kahler Sigma Models and BPS Domain Walls (2004)
Arai, Masato, Nitta, Muneto, Sakai, Norisuke
With the non-Abelian Hyper-Kahler quotient by U(M) and SU(M) gauge groups, we give the massive Hyper-Kahler sigma models that are not toric in the N=1 superfield formalism. The U(M) quotient gives...
BPS Domain Walls in Massive Hyper-Kahler Sigma Models (2004)
Arai, Masato, Nitta, Muneto, Sakai, Norisuke
We discuss hypermultiplets admitting degenerate discrete vacua and BPS domain walls interpolating them. This talk is based on the original papers, hep-th/0307274, hep-th/0211103 and hep-th/0302028.
Auxiliary Field Methods in Supersymmetric Nonlinear Sigma Models (2003)
Auxiliary field methods in D=2 (or 3), N=2 supersymmetric (SUSY) nonlinear sigma models (NLSMs) are studied. For these models auxiliary fields as Lagrange multipliers belong to a vector or a chiral...
Non-compact Calabi-Yau Metrics from Nonlinear Realizations (2003)
We give a method to construct Calabi-Yau metrics on G-invariant vector bundles over Kahler coset spaces G/H using supersymmetric nonlinear realizations with matter coupling. As a concrete example we...
Vacua of Massive Hyper-Kahler Sigma Models with Non-Abelian Quotient (2003)
Arai, Masato, Nitta, Muneto, Sakai, Norisuke
The Higgs branch of N=2 supersymmetric gauge theories with non-Abelian gauge groups are described by hyper-Kahler (HK) nonlinear sigma models with potential terms. With the non-Abelian HK quotient by...
BPS Wall in N=2 SUSY Nonlinear Sigma Model with Eguchi-Hanson Manifold (2003)
Arai, Masato, Naganuma, Masashi, Nitta, Muneto, Sakai, Norisuke
BPS wall solutions are obtained for N=2 supersymmetric nonlinear sigma model with Eguchi-Hanson target manifold in a manifestly supersymmetric manner. The model is constructed by a massive...
Manifest Supersymmetry for BPS Walls in N=2 Nonlinear Sigma Models (2002)
Arai, Masato, Naganuma, Masashi, Nitta, Muneto, Sakai, Norisuke
BPS equations and wall solutions are studied keeping (part of) supersymmetry (SUSY) manifest. Using N=1 superfields, massive hyper-Kahler quotient is introduced to obtain massive N=2 (8 SUSY)...
BPS Walls and Junctions in ${\cal N}=1$ SUSY Nonlinear Sigma Models (2002)
Naganuma, Masashi, Nitta, Muneto, Sakai, Norisuke
The ${\cal N}=1$ SUSY nonlinear sigma models in four spacetime dimensions are studied to obtain BPS walls and junctions. A nonlinear sigma model with a single chiral scalar superfield is found which...
Higashijima, Kiyoshi, Kimura, Tetsuji, Nitta, Muneto
We propose a class of N=2 supersymmetric nonlinear sigma models on the noncompact Ricci-flat Kahler manifolds, interpreted as the complex line bundles over the hermitian symmetric spaces. Kahler...
Brane Dynamics From Non-Linear Realizations (2002)
Clark, T. E., Nitta, Muneto, Ter Veldhuis, T.
The action for a non-BPS p=2 brane embedded in a flat N=1, D=4 target superspace is obtained through the method of nonlinear realizations of the associated super-Poincare symmetries. The brane...
Normal Coordinates in Kahler Manifolds and the Background Field Method (2002)
Higashijima, Kiyoshi, Itou, Etsuko, Nitta, Muneto
Riemann normal coordinates (RNC) are unsuitable for \kahler manifolds since they are not holomorphic. Instead, \kahler normal coordinates (KNC) can be defined as holomorphic coordinates. We prove...
Calabi-Yau Manifolds of Cohomogeneity One as Complex Line Bundles (2002)
Higashijima, Kiyoshi, Kimura, Tetsuji, Nitta, Muneto
We present a simple derivation of the Ricci-flat Kahler metric and its Kahler potential on the canonical line bundle over arbitrary Kahler coset space equipped with the Kahler-Einstein metric.
Gauge Theoretical Construction of Non-compact Calabi-Yau Manifolds (2001)
Higashijima, Kiyoshi, Kimura, Tetsuji, Nitta, Muneto
We construct the non-compact Calabi-Yau manifolds interpreted as the complex line bundles over the Hermitian symmetric spaces. These manifolds are the various generalizations of the complex line...
BPS Walls and Junctions in SUSY Nonlinear Sigma Models (2001)
Naganuma, Masashi, Nitta, Muneto, Sakai, Norisuke
BPS walls and junctions are studied in ${\cal N}=1$ SUSY nonlinear sigma models in four spacetime dimensions. New BPS junction solutions connecting N discrete vacua are found for nonlinear sigma...
BPS Lumps and Their Intersections in ${\cal N}=2$ SUSY Nonlinear Sigma Models (2001)
Naganuma, Masashi, Nitta, Muneto, Sakai, Norisuke
BPS lumps in ${\cal N}=2$ SUSY nonlinear sigma models on hyper-\kahler manifolds in four dimensions are studied. We present new lump solutions with various kinds of topological charges. New BPS...
Ricci-flat Kahler Manifolds from Supersymmetric Gauge Theories (2001)
Higashijima, Kiyoshi, Kimura, Tetsuji, Nitta, Muneto
Using techniques of supersymmetric gauge theories, we present the Ricci-flat metrics on non-compact Kahler manifolds whose conical singularity is repaired by the Hermitian symmetric space. These...
Higashijima, Kiyoshi, Kimura, Tetsuji, Nitta, Muneto
We present the Ricci-flat metric and its Kahler potential on the conifold with the O(N) isometry, whose conical singularity is repaired by the complex quadric surface Q^{N-2} = SO(N)/SO(N-2)xU(1).
Supersymmetic Extension of the Non-Abelian Scalar-Tensor Duality (2001)
Furuta, Ko, Inami, Takeo, Nakajima, Hiroaki, Nitta, Muneto
The field theory dual to the Freedman-Townsend model of a non-Abelian anti-symmetric tensor field is a nonlinear sigma model on the group manifold G. This can be extended to the duality between the...
Supersymmetric Nonlinear Sigma Models on Ricci-flat Kahler Manifolds with O(N) Symmetry (2001)
Higashijima, Kiyoshi, Kimura, Tetsuji, Nitta, Muneto
We propose a class of N=2 supersymmetric nonlinear sigma models on the Ricci-flat Kahler manifolds with O(n) symmetry.
A Note on Supersymmetric WZW term in Four Dimensions (2001)
We reconsider the supersymmetric Wess-Zumino-Witten (SWZW) term in four dimensions. It has been known that the manifestly supersymmetric form of the SWZW term includes derivative terms on auxiliary...
Large-n Limit of N=2 Supersymmetric Q^n Model in Two Dimensions (2000)
Higashijima, Kiyoshi, Kimura, Tetsuji, Nitta, Muneto, Tsuzuki, Makoto
We investigate non-perturbative structures of the two-dimensional N=2 supersymmetric nonlinear sigma model on the quadric surface Q^{n-2}(C) = SO(n)/SO(n-2)xU(1), which is a Hermitian symmetric...
Auxiliary Field Formulation of Supersymmetric Nonlinear Sigma Models (2000)
Higashijima, Kiyoshi, Nitta, Muneto
Two dimensional N=2 supersymmetric nonlinear sigma models on hermitian symmetric spaces are formulated in terms of the auxiliary superfields. If we eliminate auxiliary vector and chiral superfields,...
BPS Domain Walls in Models with Flat Directions (2000)
Naganuma, Masashi, Nitta, Muneto
We consider BPS domain walls in the four dimensional N=1 supersymmetric models with continuous global symmetry. Since the BPS equation is covariant under the global transformation, the solutions of...
Geometry and the Low-Energy Theorem in N=1 Supersymmetric Theories (2000)
Higashijima, Kiyoshi, Nitta, Muneto
We investigate geometrical structures and low-energy theorems of N=1 supersymmetric nonlinear sigma models in four dimensions. When a global symmetry spontaneously breaks down to its subgroup, the...
Kahler Normal Coordinate Expansion in Supersymmetric Theories (2000)
Higashijima, Kiyoshi, Nitta, Muneto
The Riemann normal coordinate expansion method is generalized to a Kahler manifold. The Kahler potential and holomorphic coordinate transformations are used to define a normal coordinate preserving...
Supersymmetric Nonlinear Sigma Models (2000)
Higashijima, Kiyoshi, Nitta, Muneto
Supersymmetric nonlinear sigma models are formulated as gauge theories. Auxiliary chiral superfields are introduced to impose supersymmetric constraints of F-type. Target manifolds defined by F-type...
Quantum Equivalence of Auxiliary Field Methods in Supersymmetric Theories (1999)
Higashijima, Kiyoshi, Nitta, Muneto
Quantum corrections to Legendre transformations are shown to cancel to all orders in supersymmetric theories in path integral formalism. Using this result, lagrangians for auxiliary fields are...
Supersymmetric Nonlinear Sigma Models as Gauge Theories (1999)
Higashijima, Kiyoshi, Nitta, Muneto
Supersymmetric nonlinear sigma models are obtained from linear sigma models by imposing supersymmetric constraints. If we introduce auxiliary chiral and vector superfields, these constraints can be...
K"ahler Potential for Global Symmetry Breaking in Supersymmetric Theories (1999)
We have developed N=1 supersymmetric nonlinear realization methods, which realize global symmetry breaking in N=1 supersymmetric theories. The target space of nonlinear sigma models with a linear...
We derive the moduli space for the global symmetry in N=1 supersymmetric theories. We show, at the generic points, it coincides with the space of quasi-Nambu-Goldstone (QNG) bosons, which appear...
Low Energy Theorems in N=1 Supersymmetric Theory (1997)
Higashijima, Kiyoshi, Nitta, Muneto, Ohta, Kazutoshi, Ohta, Nobuyoshi
In N=1 supersymmetric theories, quasi Nambu-Goldstone (QNG) bosons appear in addition to ordinary Nambu-Goldstone (NG) bosons when the global symmetry G breaks down spontaneously. We investigate...