A New Lorentz Violating Nonlocal Field Theory From String-Theory (2009)
A four-dimensional field theory with a qualitatively new type of nonlocality is constructed from a setting where Kaluza-Klein particles probe toroidally compactified string theory with twisted...
Selfduality and Chern-Simons Theory (2008)
We propose a relation between the operator of S-duality (of N=4 super Yang-Mills theory in 3+1D) and a topological theory in one dimension lower. We construct the topological theory by compactifying...
Aspects of Puff Field Theory (2007)
Ganor, Ori J., Hashimoto, Akikazu, Jue, Sharon, Kim, Bom Soo, Ndirango, Anthony
We describe some features of the recently constructed "Puff Field Theory," and present arguments in favor of it being a field theory decoupled from gravity. We construct its supergravity dual and...
A New Lorentz Violating Nonlocal Field Theory From String-Theory (2006)
A four-dimensional field theory with a qualitatively new type of nonlocality is constructed from a setting where Kaluza-Klein particles probe toroidally compactified string theory with twisted...
A Deformation of Twistor Space and a Chiral Mass Term in N=4 Super Yang-Mills Theory (2005)
Chiou, Dah-Wei, Ganor, Ori J., Kim, Bom Soo
Super twistor space admits a certain (super) complex structure deformation that preserves the Poincare subgroup of the symmetry group PSL(4|4) and depends on 10 parameters. In a previous paper...
Massless and Massive Three Dimensional Super Yang-Mills Theory and Mini-Twistor String Theory (2005)
Chiou, Dah-Wei, Ganor, Ori J., Hong, Yoon Pyo, Kim, Bom Soo, Mitra, Indrajit
We propose various ways of adding mass terms to three-dimensional twistor string theory. We begin with a review of mini-twistor space--the reduction of D=4 twistor space to D=3. We adapt the two...
Brown, Jeffrey, Ganguli, Surya, Ganor, Ori J., Helfgott, Craig
We study Z2 orbifolds of M-theory in terms of E10. We find a simple relation between the Z2 action on E10 and the imaginary root that corresponds [hep-th/0401053] to the "twisted sector" branes. We...
M-theory and E10: Billiards, Branes, and Imaginary Roots (2004)
Brown, Jeffrey, Ganor, Ori J., Helfgott, Craig
Eleven dimensional supergravity compactified on $T^{10}$ admits classical solutions describing what is known as billiard cosmology - a dynamics expressible as an abstract (billiard) ball moving in...
Twisted Six Dimensional Gauge Theories on Tori, Matrix Models, and Integrable Systems (2003)
Ganguli, Surya, Ganor, Ori J., Gill, James A.
We use the Dijkgraaf-Vafa technique to study massive vacua of 6D SU(N) SYM theories on tori with R-symmetry twists. One finds a matrix model living on the compactification torus with a genus 2...
Noncommutative Dipole Field Theories And Unitarity (2003)
We extend the argument of Gomis and Mehen for violation of unitarity in field theories with space-time noncommutativity to dipole field theories. In dipole field theories with a timelike dipole...
Twisted Backgrounds, PP-Waves and Nonlocal Field Theories (2003)
Alishahiha, Mohsen, Ganor, Ori J.
We study partially supersymmetric plane-wave like deformations of string theories and M-theory on brane backgrounds. These deformations are dual to nonlocal field theories. We calculate various...
Nonlocal Effects on D-branes in Plane-Wave Backgrounds (2002)
Ganor, Ori J., Varadarajan, Uday
We argue that the effective field theory on D3-branes in a plane-wave background with 3-form flux is a nonlocal deformation of Yang-Mills theory. In the case of NSNS flux, it is a dipole field theory...
Nonlocal Field Theories and their Gravity Duals (2001)
Bergman, Aaron, Dasgupta, Keshav, Ganor, Ori J., Karczmarek, Joanna L., Rajesh, Govindan
The gravity duals of nonlocal field theories in the large N limit exhibit a novel behavior near the boundary. To explore this, we present and study the duals of dipole theories - a particular class...
A Note on Intersecting and Fluctuating Solitons in 4D Noncommutative Field Theory (2001)
Bergman, Aaron, Ganor, Ori J., Karczmarek, Joanna L.
We examine the intersections, fluctuations and deformations of codimension two solitons in field theory on noncommutative $R^4$, in the limit of large noncommutativity. We find that holomorphic...
New M(atrix)-models for Commutative and Noncommutative Gauge Theories (2000)
We propose a M(atrix) model for N=4 $SU(k)$ Super-Yang-Mills theory compactified on $T^4$. In this model it is possible to make $T^4$ noncommutative and it is easy to turn on all 6 components of the...
Dipoles, Twists and Noncommutative Gauge Theory (2000)
T-duality of gauge theories on a noncommutative $T^d$ can be extended to include fields with twisted boundary conditions. The resulting T-dual theories contain novel nonlocal fields. These fields...
Constructions of Non Commutative Instantons on $T^4$ and $K_3$ (2000)
Ganor, Ori J., Mikhailov, Andrei Yu., Saulina, Natalia
We generalize the spectral-curve construction of moduli spaces of instantons on $\MT{4}$ and $K_3$ to noncommutative geometry. We argue that the spectral-curves should be constructed inside a twisted...
M(atrix)-Theory Scattering in the Noncommutative (2,0) theory (2000)
Ganor, Ori J., Karczmarek, Joanna L.
We study the Quantum-Mechanics on the hyper-Kahler manifold that is the blow-up of an $A_1$-singularity. This system is relevant for M(atrix)-theory as it was conjectured to describe scattering in...
Duality and Non-Commutative Gauge Theory (2000)
Ganor, Ori J., Rajesh, Govindan, Sethi, Savdeep
We study the generalization of S-duality to non-commutative gauge theories. For rank one theories, we obtain the leading terms of the dual theory by Legendre transforming the Lagrangian of the...
Pinned Branes and New Non Lorentz Invariant Theories (2000)
Chakravarty, Shoibal, Dasgupta, Keshav, Ganor, Ori J., Rajesh, Govindan
We describe a mechanism for localising branes in ambient space. When a 3-form flux is turned on in a Taub-NUT space, an M5-brane gets an effective potential that pins it to the center of the space. A...
Chiral Compactifications of 6D Conformal Theories (2000)
Chan, Chang S., Ganor, Ori J., Krogh, Morten
We construct chiral N=1 gauge theories in 4D by compactifying the 6D Blum-Intriligator (1,0) theories of 5-branes at $A_k$ singularities on $T^2$ with a nontrivial bundle of the global U(1) symmetry...
Effects in Gauge Theories and a Harmonic Function on $E_{10}$ (1999)
In a previous paper we conjectured that the structure of various gauge theories as well as M-theory on $T^8$ is encoded in a unique function $\Xi$ on the coset $E_{10}(Z)\backslash E_{10}(R)/K$ and...
Two Conjectures on Gauge Theories, Gravity, and Infinite Dimensional Kac-Moody Groups (1999)
We propose that the structure of gauge theories, the $(2,0)$ and little-string theories is encoded in a unique function on the real group manifold $E_{10}(R)$. The function is invariant under the...
Instantons on a Non-commutative $T^4$ from Twisted (2,0) and Little-String Theories (1998)
Cheung, Yeuk-Kwan E., Ganor, Ori J., Krogh, Morten, Mikhailov, Andrei Yu.
We show that the moduli space of the $(2,0)$ and little-string theories compactified on $T^3$ with R-symmetry twists is equal to the moduli space of U(1) instantons on a non-commutative $T^4$. The...
U-duality Twists and Possible Phase Transitions in 2+1D Supergravity (1998)
We study 2+1D toroidal compactifications of M-theory with twists in the U-duality group. These compactifications realize many symmetric-manifolds from the classification of 2+1D extended supergravity...
On the Twisted (2,0) and Little-String Theories (1998)
Cheung, Yeuk-Kwan E., Ganor, Ori J., Krogh, Morten
We study the compactification of the $(2,0)$ and type-II little-string theories on $S^1$, $T^2$ and $T^3$ with an R-symmetry twist that preserves half the supersymmetry. We argue that it produces the...
New Perspectives on Yang-Mills Theories With Sixteen Supersymmetries (1997)
We describe various approaches that give matrix descriptions of compactified NS five-branes. As a result, we obtain matrix models for Yang-Mills theories with sixteen supersymmetries in dimensions...
Correlators of the Global Symmetry Currents of 4D and 6D Superconformal Theories (1997)
Cheung, Yeuk-Kwan E., Ganor, Ori J., Krogh, Morten
We study the two-point correlators of the currents of the $E_8$ global symmetry in the $N=(1,0)$ superconformal six-dimensional theory as well as in the 4D superconformal theories upon toroidal...
On The M(atrix)-Model For M-Theory On $T^6$ (1997)
We study consistency conditions on a M(atrix)-model which would describe M-theory on $T^6$. We argue that there is a limit in moduli space for which it becomes a 6+1D theory and study the low-energy...
Higher Loop Effects in M(atrix) Orbifolds (1997)
Ganor, Ori J., Gopakumar, Rajesh, Ramgoolam, Sanjaye
Scattering of zero branes off the fixed point in $R^8/Z_2$, as described by a super-quantum mechanics with eight supercharges, displays some novel effects relevant to Matrix theory in non-compact...
A Note On Zeroes Of Superpotentials In F-Theory (1996)
We discuss the dependence of superpotential terms in 4D F-theory on moduli parameters. Two cases are studied: the dependence on world-filling 3-brane positions and the dependence on 2-form VEVs. In...
Branes, Fluxes and Duality in M(atrix)-Theory (1996)
Ganor, Ori J., Ramgoolam, Sanjaye, Taylor IV, Washington
We use the T-duality transformation which relates M-theory on T^3 to M-theory on a second T^3 with inverse volume to test the Banks-Fischler-Shenker-Susskind suggestion for the matrix model...
Ganor, Ori J., Morrison, David R., Seiberg, Nathan
We consider compactifications of the N=1, d=6, E_8 theory on tori to five, four, and three dimensions and learn about some properties of this theory. As a by-product we derive the SL(2,\IZ) duality...
Toroidal Compactification of Heterotic 6D Non-Critical Strings Down to Four Dimensions (1996)
The low-energy limit of the 6D non-critical string theory with $N=1$ SUSY and $E_8$ chiral current algebra compactified on $T^2$ is generically an $N=2$ $U(1)$ vector multiplet. We study the analog...
Compactification of Tensionless String Theories (1996)
We study compactifications of the $N=2$ 6D tensionless string on various complex two-folds down to two-dimensions. In the IR limit they become non-trivial conformal field theories in 2D. Using...
A Test Of The Chiral E8 Current Algebra On A 6D Non-Critical String (1996)
Compactifying the $E_8$ non-critical string in 6D down to 5D the 6D strings give rise to particles and strings in 5D. Using the dual M-theory description compactified on an elliptically fibered...
Six-Dimensional Tensionless Strings In The Large N Limit (1996)
When $N$ five-branes of M-theory coincide the world-volume theory contains tensionless strings, according to Strominger's construction. This suggests a large $N$ limit of tensionless string theories....
Small $E_8$ Instantons and Tensionless Non-critical Strings (1996)
T-duality is used to extract information on an instanton of zero size in the $E_8\times E_8$ heterotic string. We discuss the possibility of the appearance of a tensionless anti-self-dual...