Showing 2005 · hep-thShow all

19 papers · 2 filters

hep-th2005★ 30 cited

Antiferromagnetic Operators in N=4 Supersymmetric Yang-Mills Theory

K. Zarembo

The spectrum of operators in the su(2) sector of N=4 SYM is bounded because the number of operators is finite. According to the AdS/CFT correspondence, the string spectrum in this…

hep-th2005★ 19 cited

Inflation as a probe of new physics

Ulf H. Danielsson

In this paper we consider inflation as a probe of new physics near the string or Planck scale. We discuss how new physics can be captured by the choice of vacuum, and how this lead…

hep-th2005★ 53 cited

Long-Range GL(n) Integrable Spin Chains and Plane-Wave Matrix Theory

N. Beisert, T. Klose

Quantum spin chains arise naturally from perturbative large-N field theories and matrix models. The Hamiltonian of such a model is a long-range deformation of nearest-neighbor type…

hep-th2005★ 49 cited

1/J corrections to semiclassical AdS/CFT states from quantum Landau-Lifshitz model

J. A. Minahan, A. Tirziu, A. A. Tseytlin

One way to relate semiclassical string states and dual gauge theory states is to show the equivalence between their low-energy effective 2d actions. The gauge theory effective acti…

hep-th2005★ 12 cited

Ricci-flat supertwistor spaces

Ulf Lindstrom, Martin Rocek, Rikard von Unge

We show that supertwistor spaces constructed as a Kahler quotient of a hyperkahler cone (HKC) with equal numbers of bosonic and fermionic coordinates are Ricci-flat, and hence, Cal…

hep-th2005★ 4 cited

BRST extension of the Faddeev model

Soon-Tae Hong, Antti J. Niemi

The Faddeev model is a second class constrained system. Here we construct its nilpotent BRST operator and derive the ensuing manifestly BRST invariant Lagrangian. Our construction…

hep-th2005★ 23 cited

First-order supersymmetric sigma models and target space geometry

Andreas Bredthauer, Ulf Lindstrom, Jonas Persson

We study the conditions under which N=(1,1) generalized sigma models support an extension to N=(2,2). The enhanced supersymmetry is related to the target space complex geometry. Co…

hep-th2005★ 94 cited

An Exact Solution of 4D Higher-Spin Gauge Theory

E. Sezgin, P. Sundell

We give a one-parameter family of exact solutions to four-dimensional higher-spin gauge theory invariant under a deformed higher-spin extension of SO(3,1) and parameterized by a ze…

hep-th2005★ 80 cited

Brane Partons and Singleton Strings

J. Engquist, P. Sundell

We examine p-branes in AdS(D) in two limits where they exhibit partonic behavior: rotating branes with energy concentrated to cusp-like solitons; tensionless branes with energy dis…

hep-th2005★ 6 cited

4D black holes and holomorphic factorization of the 0A matrix model

Ulf H. Danielsson, Niklas Johansson, Magdalena Larfors +2

In this letter, we relate the free energy of the 0A matrix model to the sum of topological and anti-topological string amplitudes. For arbitrary integer multiples of the matrix mod…

hep-th2005★ 94 cited

Quantum corrections to spinning strings in AdS(5)xS(5) and Bethe ansatz: a comparative study

Sakura Schafer-Nameki, Marija Zamaklar, Konstantin Zarembo

We analyze quantum corrections to rigid spinning strings in AdS(5)xS(5). The one-loop worldsheet quantum correction to the string energy is compared to the finite-size correction f…

hep-th2005★ 6 cited

Special holonomy sigma models with boundaries

P. S. Howe, U. Lindstrom, V. Stojevic

A study of (1,1) supersymmetric two-dimensional non-linear sigma models with boundary on special holonomy target spaces is presented. In particular, the consistency of the boundary…

hep-th2005★ 33 cited

Superstrings with boundary fermions

P. S. Howe, U. Lindstrom, L. Wulff

The Green-Schwarz action for an open superstring with additional boundary fermions, representing Chan-Paton factors, is studied at the classical level. The boundary geometry is des…

hep-th2005★ 27 cited

The SU(2) sector in AdS/CFT

Joseph A. Minahan

In the large N limit of N=4 Super Yang-Mills, the mixing under dilatations of the SU(2) sector, single trace operators composed of L complex scalar fields of two types, is closed t…

hep-th2005★ 65 cited

A mini-course on topological strings

Marcel Vonk

These are the lecture notes for a short course in topological string theory that I gave at Uppsala University in the fall of 2004. The notes are aimed at PhD students who have stud…

hep-th2005★ 112 cited

Matching quantum strings to quantum spins: one-loop vs. finite-size corrections

N. Beisert, A. A. Tseytlin, K. Zarembo

We compare quantum corrections to semiclassical spinning strings in AdS(5)xS(5) to one-loop anomalous dimensions in N=4 supersymmetric gauge theory. The latter are computed using t…

hep-th2005★ 103 cited

Complete Spectrum of Long Operators in N=4 SYM at One Loop

N. Beisert, V. A. Kazakov, K. Sakai +1

We construct the complete spectral curve for an arbitrary local operator, including fermions and covariant derivatives, of one-loop N=4 gauge theory in the thermodynamic limit. Thi…

hep-th2005★ 284 cited

The Algebraic Curve of Classical Superstrings on AdS_5xS^5

N. Beisert, V. A. Kazakov, K. Sakai +1

We investigate the monodromy of the Lax connection for classical IIB superstrings on AdS_5xS^5. For any solution of the equations of motion we derive a spectral curve of degree 4+4…

hep-th2005★ 3 cited

Yang-Mills, Complex Structures and Chern's Last Theorem

Andrei Marshakov, Antti J. Niemi

Recently Shiing-Shen Chern suggested that the six dimensional sphere has no complex structure. Here we explore the relations between his arguments and Yang-Mills the…