Quantum phase transition from an antiferromagnet to a spin liquid in a metal (2009)
We study quantum phase transitions from easy-plane antiferromagnetic metals to paramagnetic metals in Kondo-Heisenberg lattice systems. If the paramagnetic metal is a fractionalized Fermi liquid then...
Grover, Tarun, Trivedi, N., Senthil, T., Lee, Patrick A.
We study the energetics of Gutzwiller projected BCS states of various symmetries for the triangular lattice antiferromagnet with a four particle ring exchange using variational Monte Carlo methods....
Coherence and pairing in a doped Mott insulator: Application to the cuprates (2009)
The issues of single particle coherence and its interplay with singlet pairing are studied within the slave boson gauge theory of a doped Mott insulator. Prior work by one of us (T. Senthil,...
Kondo Vortices, Zero Modes, and Magnetic Ordering in a Kondo Lattice Model (2009)
Saremi, Saeed, Lee, Patrick A., Senthil, T.
Motivated by the mysteries of the heavy fermion quantum critical point, we investigate the competition between Kondo screening and magnetic ordering in the honeycomb Kondo lattice at half filling. We...
A synthesis of the phenomenology of the underdoped cuprates (2009)
The underdoped cuprates have a number of interesting and unusual properties that often seem hard to reconcile with one another. In this paper we show how many of these diverse phenomena can be...
Mott transition between a spin-liquid insulator and a metal in three dimensions (2008)
Podolsky, Daniel, Paramekanti, Arun, Kim, Yong Baek, Senthil, T.
We study a bandwidth controlled Mott metal-insulator transition (MIT) between a Fermi liquid metal and a quantum spin-liquid insulator at half-filling in three dimensions (3D). Using a slave rotor...
Monopoles in CP(N-1) model via the state-operator correspondence (2008)
Metlitski, Max A., Hermele, Michael, Senthil, T., Fisher, Matthew P. A.
One of the earliest proposed phase transitions beyond the Landau-Ginzburg-Wilson paradigm is the quantum critical point separating an antiferromagnet and a valence-bond-solid on a square lattice. The...
Lattice models for non-Fermi liquid metals (2008)
We present two 2D lattice models with non-Fermi liquid metallic phases. We show that the low energy physics of these models is exactly described by a Fermi sea of fractionalized quasiparticles...
Fermi surfaces in general co-dimension and a new controlled non-trivial fixed point (2008)
Traditionally Fermi surfaces for problems in $d$ spatial dimensions have dimensionality $d-1$, i.e., codimension $d_c=1$ along which energy varies. Situations with $d_c >1$ arise when the gapless...
Theory of a continuous Mott transition in two dimensions (2008)
We study theoretically the zero temperature phase transition in two dimensions from a Fermi liquid to a paramagnetic Mott insulator with a spinon Fermi surface. We show that the approach to the...
Critical fermi surfaces and non-fermi liquid metals (2008)
At certain quantum critical points in metals an entire Fermi surface may disappear. A crucial question is the nature of the electronic excitations at the critical point. Here we provide arguments...
Topological spin Hall states, charged skyrmions, and superconductivity in two dimensions (2008)
We study the properties of two dimensional topological spin hall insulators which arise through spontaneous breakdown of spin symmetry in systems that are spin rotation invariant. Such a phase breaks...
Superfluid insulator transitions of hard-core bosons on the checkerboard lattice (2007)
Sen, Arnab, Damle, Kedar, Senthil, T
We study hard-core bosons on the checkerboard lattice with nearest-neighbor unfrustrated hopping t and "tetrahedral" plaquette charging energy U. Analytical arguments and quantum Monte Carlo...
Angle dependent quasiparticle weights in correlated metals (2007)
Ghaemi, Pouyan, Senthil, T., Coleman, P.
The variation in the quasiparticle weight $Z$ on moving around the fermi surface in correlated metals is studied theoretically. Our primary example is a heavy Fermi liquid treated within the standard...
Erratum: algebraic spin liquid as the mother of many competing orders (2007)
Hermele, Michael, Senthil, T., Fisher, Matthew P. A.
We correct an error in our paper Phys. Rev. B 72, 104404 (2005) [cond-mat/0502215]. We show that a particular fermion bilinear is not related to the other ``competing orders'' of the algebraic spin...
Algebraic charge liquids (2007)
Kaul, Ribhu K., Kim, Yong Baek, Sachdev, Subir, Senthil, T.
High temperature superconductivity emerges in the cuprate compounds upon changing the electron density of an insulator in which the electron spins are antiferromagnetically ordered. A key...
Hole dynamics in an antiferromagnet across a deconfined quantum critical point (2007)
Kaul, Ribhu K, Kolezhuk, Alexei, Levin, Michael, Sachdev, Subir, Senthil, T
We study the effects of a small density of holes, $\delta$, on a square-lattice antiferromagnet undergoing a continuous transition from a Neel state to a valence bond solid at a deconfined quantum...
Higher angular momentum Kondo liquids (2007)
Conventional heavy Fermi liquid phases of Kondo lattices involve the formation of a “Kondo singlet” between the local moments and the conduction electrons. This Kondo singlet is usually taken to...
Hole dynamics in an antiferromagnet across a deconfined quantum critical point (2007)
Kaul, Ribhu K., Kolezhuk, Alexei, Levin, Michael, Sachdev, Subir, Senthil, T.
We study the effects of a small density of holes, delta, on a square lattice antiferromagnet undergoing a continuous transition from a Neel state to a valence bond solid at a deconfined quantum...
Lee, Sung-Sik, Lee, Patrick A, Senthil, T
Recent experiments on the organic compound $K-(BEDT-TTF_2)Cu_2(CN_3)$ raise the possibility that the system may be described as a quantum spin liquid. Here we propose a pairing state caused by the...
Superfluid Insulator Transitions of Hard-Core Bosons on the Checkerboard Lattice (2007)
Sen, Arnab, Damle, Kedar, Senthil, T.
We study hard-core bosons on the checkerboard lattice with nearest neighbour unfrustrated hopping $t$ and `tetrahedral' plaquette charging energy $U$. Analytical arguments and Quantum Monte Carlo...
We study theoretically the destruction of spin nematic order due to quantum fluctuations in quasi-one dimensional spin-1 magnets. If the nematic ordering is disordered by condensing disclinations...
Lee, Sung-Sik, Lee, Patrick A, Senthil, T
Recent experiments on the organic compound $K-(BEDT-TTF_2)Cu_2(CN_3)$ raise the possibility that the system may be described as a quantum spin liquid. Here we propose a pairing state caused by the...
Higher angular momentum Kondo liquids (2007)
Conventional heavy Fermi liquid phases of Kondo lattices involve the formation of a “Kondo singlet” between the local moments and the conduction electrons. This Kondo singlet is usually taken to...
Hole dynamics in an antiferromagnet across a deconfined quantum critical point (2007)
Kaul, Ribhu K, Kolezhuk, Alexei, Levin, Michael, Sachdev, Subir, Senthil, T
We study the effects of a small density of holes, $\delta$, on a square-lattice antiferromagnet undergoing a continuous transition from a Neel state to a valence bond solid at a deconfined quantum...
Superfluid insulator transitions of hard-core bosons on the checkerboard lattice (2007)
Sen, Arnab, Damle, Kedar, Senthil, T
We study hard-core bosons on the checkerboard lattice with nearest-neighbor unfrustrated hopping t and "tetrahedral" plaquette charging energy U. Analytical arguments and quantum Monte Carlo...
Higher angular momentum Kondo liquids (2006)
Conventional heavy Fermi liquid phases of Kondo lattices involve the formation of a "Kondo singlet" between the local moments and the conduction electrons. This Kondo singlet is usually taken to be...
Fermi surface change across a deconfined quantum critical point (2006)
Kaul, Ribhu K., Kolezhuk, Alexei, Levin, Michael, Sachdev, Subir, Senthil, T.
The quantum phase transitions of metals have been extensively studied in the rare-earth "heavy electron" materials, the cuprates, and related compounds. The Fermi surface of the metal often has...
Emergence of Artificial Photons in an Optical Lattice (2006)
Tewari, Sumanta, Scarola, VW, Senthil, T, Sarma, Das S
We establish the theoretical feasibility of direct analog simulation of the compact U(1) lattice gauge theories in optical lattices with dipolar bosons. We discuss the realizability of the...
Spin Nematics and Magnetization Plateau Transition in Anisotropic Kagome Magnets (2006)
We study S =1 kagome antiferromagnets with an isotropic Heisenberg exchange J and strong easyaxis single-ion anisotropy D. For $D \gg J$, the low-energy physics can be described by an effective S...
Lee, Sung-Sik, Lee, Patrick A., Senthil, T.
Recent experiments on the organic compound $\kappa-(BEDT-TTF)_2 Cu_2 (CN)_3$ raise the possibility that the system may be described as a quantum spin liquid. Here we propose a pairing state caused by...
Possible ferro-spin nematic order in NiGa2S4 (2006)
Bhattacharjee, Subhro, Shenoy, Vijay B, Senthil, T
We explore the possibility that the spin-1 triangular lattice magnet NiGa2S4 may have a ferronematic ground state with no frozen magnetic moment but a uniform quadrupole moment. Such a state may be...
Possible ferro-spin nematic order in NiGa2S4 (2006)
Bhattacharjee, Subhro, Shenoy, Vijay B., Senthil, T.
We explore the possibility that the spin-1 triangular lattice magnet NiGa2 S4 may have a ferro-nematic ground state with no frozen magnetic moment but a uniform quadrupole moment. Such a state may be...
Emergence of Artificial Photons in an Optical Lattice (2006)
Tewari, Sumanta, Scarola, V. W., Senthil, T., Sarma, S. Das
We establish the theoretical feasibility of direct analog simulation of the compact U(1) lattice gauge theories in optical lattices with dipolar bosons. We discuss the realizability of the...
On non-Fermi liquid quantum critical points in heavy fermion metals (2006)
Heavy electron metals on the verge of a quantum phase transition to magnetism show a number of unusual non-fermi liquid properties which are poorly understood. This article discusses in a general way...
Spin nematics and magnetization plateau transition in anisotropic Kagome magnets (2006)
We study S=1 kagome antiferromagnets with isotropic Heisenberg exchange $J$ and strong easy axis single-ion anisotropy $D$. For $D \gg J$, the low-energy physics can be described by an effective...
Fractionalization, Topological Order,and Quasiparticle Statistics (2006)
We argue, based on general principles, that topological order is essential to realize fractionalization in gapped insulating phases in dimensions d >= 2. In d=2 with genus g, we derive the existence...
Spin Nematics and Magnetization Plateau Transition in Anisotropic Kagome Magnets (2006)
We study S =1 kagome antiferromagnets with an isotropic Heisenberg exchange J and strong easyaxis single-ion anisotropy D. For $D \gg J$, the low-energy physics can be described by an effective S...
Towards a complete theory of high T-c (2006)
Zaanen, J., Chakravarty, S., Senthil, T., Anderson, P., Lee, P., Schmalian, J., ...
Towards a complete theory of high T-c (2006)
Zaanen, J., Chakravarty, S., Senthil, T., Anderson, P., Lee, P., Schmalian, J., ...
Emergence of Artificial Photons in an Optical Lattice (2006)
Tewari, Sumanta, Scarola, VW, Senthil, T, Sarma, Das S
We establish the theoretical feasibility of direct analog simulation of the compact U(1) lattice gauge theories in optical lattices with dipolar bosons. We discuss the realizability of the...
Competing orders, non-linear sigma models, and topological terms in quantum magnets (2005)
Senthil, T., Fisher, Matthew P. A.
A number of examples have demonstrated the failure of the Landau-Ginzburg-Wilson(LGW) paradigm in describing the competing phases and phase transitions of two dimensional quantum magnets. In this...
Vortex description of the fractionalized phase in exciton bose condensate (2005)
Lee, Sung-Sik, Senthil, T., Lee, Patrick A.
As a sequel to the previous work [Phys. Rev. B 72, 235104 (2005)] we present a vortex description of the fractionalized phase in exciton bose condensate. Magnetic flux line and monopole of the 3+1D...
Neel order, quantum spin liquids and quantum criticality in two dimensions (2005)
This paper is concerned with the possibility of a direct second order transition out of a collinear Neel phase to a paramagnetic spin liquid in two dimensional quantum antiferromagnets. Contrary to...
Algebraic spin liquid as the mother of many competing orders (2005)
Hermele, Michael, Senthil, T, Fisher, Matthew PA
We study the properties of a class of two-dimensional interacting critical states-dubbed algebraic spin liquids-that can arise in two-dimensional quantum magnets. A particular example that we focus...
Vortices and Quasiparticles near the Superconductor-Insulator Transition in Thin Films (2005)
Galitski, Victor M., Refael, G., Fisher, Matthew P. A., Senthil, T.
We study the low temperature behavior of an amorphous superconducting film driven normal by a perpendicular magnetic-field (B). For this purpose we introduce a new two-fluid formulation consisting of...
Vortices and Quasiparticles near the Superconductor-Insulator Transition in Thin Films (2005)
Galitski, Victor M, Refael, G, Fisher, Matthew PA, Senthil, T
We study the low temperature behavior of an amorphous superconducting film driven normal by a perpendicular magnetic-field (B). For this purpose we introduce a new two-fluid formulation consisting of...
Bray-Ali, N., Moore, J. E., Senthil, T., Vishwanath, A.
Randomly diluted quantum boson and spin models in two dimensions combine the physics of classical percolation with the well-known dimensionality dependence of ordering in quantum lattice models. This...
Fractionalization, topological order, and quasiparticle statistics (2005)
We argue, based on general principles, that topological order is essential to realize fractionalization in gapped insulating phases in dimensions $d \geq 2$. In $d=2$ with genus $g$, we derive the...
Vortices and quasiparticles near the "superconductor-insulator" transition in thin films (2005)
Galitski, Victor, Refael, G., Fisher, Matthew P. A., Senthil, T.
We study the low temperature behavior of an amorphous superconducting film driven normal by a perpendicular magnetic field (B). For this purpose we introduce a new two-fluid formulation consisting of...
Origin of artificial electrodynamics in three-dimensional bosonic models (2005)
Several simple models of strongly correlated bosons on three-dimensional lattices have been shown to possess exotic fractionalized Mott insulating phases with a gapless "photon" excitation. In this...
Ordering in Cs2CuCl4: Is there a proximate spin liquid? (2005)
Isakov, S. V., Senthil, T., Kim, Yong Baek
The layered spiral magnet Cs2CuCl4 displays several interesting properties that have been suggested as evidence of proximity to a two dimensional quantum spin liquid. In this paper we study a...
Algebraic spin liquid as the mother of many competing orders (2005)
Hermele, Michael, Senthil, T., Fisher, Matthew P. A.
We study the properties of a class of two-dimensional interacting critical states -- dubbed algebraic spin liquids -- that can arise in two-dimensional quantum magnets. A particular example that we...
Vortices and Quasiparticles near the Superconductor-Insulator Transition in Thin Films (2005)
Galitski, Victor M, Refael, G, Fisher, Matthew PA, Senthil, T
We study the low temperature behavior of an amorphous superconducting film driven normal by a perpendicular magnetic-field (B). For this purpose we introduce a new two-fluid formulation consisting of...
Algebraic spin liquid as the mother of many competing orders (2005)
Hermele, Michael, Senthil, T, Fisher, Matthew PA
We study the properties of a class of two-dimensional interacting critical states-dubbed algebraic spin liquids-that can arise in two-dimensional quantum magnets. A particular example that we focus...
Competing orders, non-linear sigma models, and topological terms in quantum magnets (2005)
Senthil, T, Fisher, Matthew PA
A number of examples have demonstrated the failure of the Landau-Ginzburg-Wilson(LGW) paradigm in describing the competing phases and phase transitions of two dimensional quantum magnets. In this...
Competing orders, non-linear sigma models, and topological terms in quantum magnets (2005)
Senthil, T, Fisher, Matthew PA
A number of examples have demonstrated the failure of the Landau-Ginzburg-Wilson(LGW) paradigm in describing the competing phases and phase transitions of two dimensional quantum magnets. In this...
Ghaemi, Pouyan, Vishwanath, Ashvin, Senthil, T.
We study the finite temperature properties of quantum magnets close to a continuous quantum phase transition between two distinct valence bond solid phases in two spatial dimension. Previous work has...
Spontaneous interlayer coherence in bilayer Kondo systems (2004)
Bilayer Kondo systems present interesting models to illustrate the competition between the Kondo effect and intermoment exchange. Such bilayers can exhibit two sharply distinct Fermi liquid phases...
Quantum matters: Physics beyond Landau's paradigms (2004)
Central to our understanding of quantum many particle physics are two ideas due to Landau. The first is the notion of the electron as a well-defined quasiparticle excitation in the many body state....
Quantum phase transitions out of the heavy Fermi liquid (2004)
Senthil, T., Sachdev, Subir, Vojta, Matthias
We review recent work on the instability of the heavy Fermi liquid state (FL) of the Kondo lattice towards a magnetic metal in which the local moments are not part of the Fermi sea. Using insights...
Several simple models of strongly correlated bosons on three-dimensional lattices have been shown to possess exotic fractionalized Mott insulating phases with a gapless `photon' excitation. In this...
Cuprates as doped U(1) spin liquids (2004)
We explore theoretically the notion that the underdoped cuprates may be viewed as doped U(1) spin liquid Mott insulators. We pursue a conceptually clear version of this idea that naturally...
Deconfined quantum criticality and Neel order via dimer disorder (2004)
Recent results on the nature of the quantum critical point between Neel and valence bond solid(VBS) ordered phases of two dimensional quantum magnets are examined by an attack from the VBS side. This...
Deconfined criticality critically defined (2004)
Senthil, T., Balents, Leon, Sachdev, Subir, Vishwanath, Ashvin, Fisher, Matthew P. A.
We describe characteristic physical properties of the recently introduced class of deconfined quantum critical points. Using some simple models, we highlight observables which clearly distinguish...
On the stability of U(1) spin liquids in two dimensions (2004)
Hermele, Michael, Senthil, T., Fisher, Matthew P. A., Lee, Patrick A., Nagaosa, Naoto, Wen, Xiao-Gang
We establish that spin liquids described in terms of gapless fermionic (Dirac) spinons and gapless U(1) gauge fluctuations can be stable in two dimensions, at least when the physical SU(2) spin...
Theory of the Kagome Lattice Ising Antiferromagnet in Weak Transverse Field (2004)
We study the quantum Ising antiferromagnet on the Kagome lattice, with weak transverse field dynamics and other local perturbations. We analytically demonstrate the possibility of a disordered...
Quantum criticality beyond the Landau-Ginzburg-Wilson paradigm (2003)
Senthil, T., Balents, Leon, Sachdev, Subir, Vishwanath, Ashvin, Fisher, Matthew P. A.
We present the critical theory of a number of zero temperature phase transitions of quantum antiferromagnets and interacting boson systems in two dimensions. The most important example is the...
"Deconfined" quantum critical points (2003)
Senthil, T., Vishwanath, Ashvin, Balents, Leon, Sachdev, Subir, Fisher, M. P. A.
The theory of second order phase transitions is one of the foundations of modern statistical mechanics and condensed matter theory. A central concept is the observable `order parameter', whose...
Quantum Criticality and Deconfinement in Phase Transitions Between Valence Bond Solids (2003)
Vishwanath, Ashvin, Balents, L., Senthil, T.
We consider spin-half quantum antiferromagnets in two spatial dimensions in the quantum limit, where the spins are in a valence bond solid (VBS) phase. The transitions between two such VBS phases is...
Physics of low energy singlet states of the Kagome lattice quantum Heisenberg antiferromagnet (2003)
This paper is concerned with physics of the low energy singlet excitations found to exist below the spin gap in numerical studies of the Kagome lattice quantum Heisenberg antiferromagnet. Insight...
Weak magnetism and non-Fermi liquids near heavy-fermion critical points (2003)
Senthil, T., Vojta, Matthias, Sachdev, Subir
This paper is concerned with the weak-moment magnetism in heavy-fermion materials and its relation to the non-Fermi liquid physics observed near the transition to the Fermi liquid. We explore the...
Exotic Order in Simple Models of Bosonic Systems (2002)
We show that simple Bose Hubbard models with unfrustrated hopping and short range two-body repulsive interactions can support stable fractionalized phases in two and higher dimensions, and in zero...
Microscopic models for fractionalized phases in strongly correlated systems (2002)
We construct explicit examples of microscopic models that stabilize a variety of fractionalized phases of strongly correlated systems in a spatial dimension larger than one, and in a zero external...
Fractionalized Fermi liquids (2002)
Senthil, T., Sachdev, Subir, Vojta, Matthias
In spatial dimensions d >= 2, Kondo lattice models of conduction and local moment electrons can exhibit a fractionalized, non-magnetic state (FL*) with a Fermi surface of sharp electron-like...
Vishwanath, Ashvin, Moore, Joel E., Senthil, T.
We study localization phenomena in two dimensional systems of charged particles in the presence of a metallic ground plane with a particular focus on the superconductor-insulator transition. The...
Exotic order in simple models of bosonic systems (2002)
We show that simple Bose Hubbard models with unfrustrated hopping and short range two-body repulsive interactions can support stable fractionalized phases in two and higher dimensions, and in zero...
Projected wave functions for fractionalized phases of quantum spin systems (2002)
Gutzwiller projection allows a construction of an assortment of variational wave functions for strongly correlated systems. For quantum spin S=1/2 models, Gutzwiller-projected wave functions have...
Microscopic models for fractionalized phases in strongly correlated systems (2002)
We construct explicit examples of microscopic models that stabilize a variety of fractionalized phases of strongly correlated systems in spatial dimension bigger than one, and in zero external...
Interaction Effects on Quasiparticle Localization in Dirty Superconductors (2001)
Jeng, M., Ludwig, A. W. W., Senthil, T., Chamon, C.
We study how quasiparticle interactions affect their localization properties in dirty superconductors with broken time reversal symmetry -- for example in a magnetic field. For SU(2) spin-rotation...
Demler, Eugene, Nayak, Chetan, Kee, Hae-Young, Kim, Yong Baek, Senthil, T.
We discuss possible patterns of electron fractionalization in strongly interacting electron systems. A popular possibility is one in which the charge of the electron has been liberated from its Fermi...
Electron fractionalization and cuprate superconductivity (2001)
We discuss the possibility that the electron may be fractionalized in some quantum phases of matter in two or higher dimensions. We review the theory of such phases, and show that their effective...
The Electron Spectral Function in Two-Dimensional Fractionalized Phases (2001)
Lannert, C., Fisher, Matthew P. A., Senthil, T.
We study the electron spectral function of various zero-temperature spin-charge separated phases in two dimensions. In these phases, the electron is not a fundamental excitation of the system, but...
Detecting fractions of electrons in the high-$T_c$ cuprates (2000)
Senthil, T., Fisher, Matthew P. A.
We propose several tests of the idea that the electron is fractionalized in the underdoped and undoped cuprates. These include the ac Josephson effect, and tunneling into small superconducting grains...
Fractionalization, topological order, and cuprate superconductivity (2000)
Senthil, T., Fisher, Matthew P. A.
This paper is concerned with the idea that the electron is fractionalized in the cuprate high-$T_c$ materials. We show how the notion of topological order may be used to develop a precise theoretical...
Fractionalization in the cuprates: Detecting the topological order (2000)
Senthil, T., Fisher, Matthew P. A.
The precise theoretical characterization of a fractionalized phase in spatial dimensions higher than one is through the concept of ``topological order''. We describe a physical effect that is a...
Quantum Confinement Transition in a d-wave Superconductor (2000)
Lannert, C., Fisher, Matthew P. A., Senthil, T.
We study the nature of the zero-temperature phase transition between a d-wave superconductor and a Mott insulator in two dimensions. In this ``quantum confinement transition'', spin and charge are...
Senthil, T., Fisher, Matthew P. A.
Recently, we have elucidated the physics of electron fractionalization in strongly interacting electron systems using a $Z_2$ gauge theory formulation. Here we discuss the connection with the earlier...
Luttinger Liquid Physics in the Superconductor Vortex Core (1999)
Vishwanath, Ashvin, Senthil, T.
We study several aspects of the structure of vortices in conventional s-wave Type $II$ superconductors. It is well-known that there are low energy quasiparticles bound to the core of a vortex. We...
Quantum Confinement Transition and Cuprate Criticality (1999)
Senthil, T., Fisher, Matthew P. A.
Theoretical attempts to explain the origin of high temperature superconductivity are challenged by the complexity of the normal state, which exhibits three regimes with increasing hole doping: a...
Z_2 Gauge Theory of Electron Fractionalization in Strongly Correlated Systems (1999)
Senthil, T., Fisher, Matthew P. A.
We develop a new theoretical framework for describing and analyzing exotic phases of strongly correlated electrons which support excitations with fractional quantum numbers. Starting with a class of...
Quasiparticle localization in superconductors with spin-orbit scattering (1999)
Senthil, T., Fisher, Matthew P. A.
We develop a theory of quasiparticle localization in superconductors in situations without spin rotation invariance. We discuss the existence, and properties of superconducting phases with...
Superconducting ``metals'' and ``insulators'' (1999)
Vishveshwara, S., Senthil, T., Fisher, Matthew P. A.
We propose a characterization of zero temperature phases in disordered superconductors on the basis of the nature of quasiparticle transport. In three dimensional systems, there are two distinct...
The spin quantum Hall effect in unconventional superconductors (1999)
Senthil, T., Marston, J. B., Fisher, Matthew P. A.
We study the properties of the "spin quantum Hall fluid" - a novel spin phase with quantized spin Hall conductance that is potentially realizable in superconducting systems with unconventional...
Quasiparticle density of states in dirty high-T_c superconductors (1998)
Senthil, T., Fisher, Matthew P. A.
We study the density of quasiparticle states of dirty d-wave superconductors. We show the existence of singular corrections to the density of states due to quantum interference effects. We then argue...
Quasiparticle transport and localization in high-T_c superconductors (1998)
Senthil, T., Fisher, Matthew P. A., Balents, Leon, Nayak, Chetan
We present a theory of the effects of impurity scattering in d_{x^2-y^2} superconductors and their quantum disordered counterparts, based on a non-linear sigma model formulation. We show the...
Properties of the random field Ising model in a transverse magnetic field (1997)
We consider the effect of a random longitudinal field on the Ising model in a transverse magnetic field. For spatial dimension $d > 2$, there is at low strength of randomness and transverse field, a...
Higher dimensional realizations of activated dynamic scaling at random quantum transitions (1996)
We show that many of the unusual properties of the one-dimensional random quantum Ising model are shared also by dilute quantum Ising systems in the vicinity of a certain quantum transition in {\em...
Phase transition of a Bose gas in a harmonic potential (1996)
Damle, Kedar, Senthil, T., Majumdar, Satya N., Sachdev, Subir
We consider a dilute Bose gas confined by a harmonic potential. We define an appropriate thermodynamic limit and analyze the properties of the phases and phase transition in this limit. Critical...
Zero temperature phase transitions in quantum Heisenberg ferromagnets (1996)
The purpose of this work is to understand the zero temperature phases, and the phase transitions, of Heisenberg spin systems which can have an extensive, spontaneous magnetic moment; this entails a...
Critical Properties of Random Quantum Potts and Clock Models (1995)
Senthil, T., Majumdar, Satya N.
We study zero temperature phase transitions in two classes of random quantum systems -the $q$-state quantum Potts and clock models. For models with purely ferromagnetic interactions in one dimension,...
Quantum Phase Transition in Frustrated Two-Dimensional Antiferromagnets (1994)
Chubukov, Andrey V., Sachdev, Subir, Senthil, T.
We study frustrated, two-dimensional, quantum antiferromagnets in the vicinity of a quantum transition from a non-collinear, magnetically-ordered ground state to a quantum disordered phase. The...
Sachdev, Subir, Senthil, T., Shankar, R.
Consider a $d$-dimensional antiferromagnet with a quantum disordered ground state and a gap to bosonic excitations with non-zero spin. In a finite external magnetic field, this antiferromagnet will...
Universal Magnetic Properties of Frustrated Quantum Antiferromagnets in Two Dimensions (1993)
Chubukov, A. V., Senthil, T., Sachdev, S.
We present a theory of frustrated, two-dimensional, quantum antiferromagnets in the vicinity of a quantum transition from a non-collinear, magnetically-ordered ground state to a quantum-disordered...