Showing 2000 · hep-thShow all

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hep-th2000★ 90 cited

One-Dimensional String Theory with Vortices as Upside-Down Matrix Oscillator

Dmitri Boulatov, Vladimir Kazakov

We study matrix quantum mechanics at a finite temperature equivalent to one dimensional compactified string theory with vortex (winding) excitations. It is explicitly demonstrated…

hep-th2000★ 4 cited

Nonlinear Realization of Partially Broken N=2 AdS Supersymmetry in Two and Three Dimensions

Masayuki Sano, Tsuneo Uematsu

We investigate the nonlinear realization of partially broken =2 global supersymmetry in the D=2 and 3 anti de-Sitter (AdS) space. We particularly study Nambu-Goldstone degrees o…

hep-th2000★ 10 cited

Behavior of Cosmological Perturbations in the Brane-World Mode

Hideo Kodama

In this paper we present a gauge-invariant formalism for perturbations of the brane-world model developed by the author, A. Ishibashi and O. Seto recently, and analyze the behavior…

hep-th2000★ 18 cited

Descent Relation of Tachyon Condensation from Boundary String Field Theory

Sanefumi Moriyama, Shin Nakamura

We analyze how lower-dimensional bosonic D-branes further decay, using the boundary string field theory. Especially we find that the effective tachyon potential of the lower-dimens…

hep-th2000★ 17 cited

Gravitational waves in cosmological models of Hořava-Witten theory

Osamu Seto, Hideo Kodama

We study the behavior of gravitational waves and their backreaction on the background in cosmological solutions of the five-dimensional Hořava-Witten theory. As a dynamical backgro…

hep-th2000★ 2 cited

Low-energy propagation modes on string network

Naoki Sasakura

We study low-energy propagation modes on string network lattice. Specifically, we consider an infinite two-dimensional regular hexagonal string network and analyze the low frequenc…

hep-th2000★ 3 cited

Deconfining Phase Transition in QCD_4 and QED_4 at Finite Temperature

Kentaroh Yoshida

We investigate the deconfining phase transition in QCD_4 and QED_4 at finite temperature using a perturbative deformation of topological quantum field theory (TQFT). A modified max…

hep-th2000★ 4 cited

Landau-Ginzburg Description of D-branes on ALE Spaces

Jiro Hashiba, Michihiro Naka

We study the Landau-Ginzburg (LG) mirror theory of the non-linear sigma model on the ALE space obtained by resolving the singularity of the orbifold ${\bf C}^2/{\bf Z}_N…

hep-th2000★ 63 cited

Generating All Wigner Functions

Thomas Curtright, Tsuneo Uematsu, Cosmas Zachos

In the context of phase-space quantization, matrix elements and observables result from integration of c-number functions over phase space, with Wigner functions serving as the qua…

hep-th2000★ 6 cited

D-branes on a Noncompact Singular Calabi-Yau Manifold

Katsuyuki Sugiyama, Satoshi Yamaguchi

We investigate D-branes on a noncompact singular Calabi-Yau manifold by using the boundary CFT description, and calculate the open string Witten indices between the boundary states…

hep-th2000★ 57 cited

BRST Invariance of the Non-Perturbative Vacuum in Bosonic Open String Field Theory

Hiroyuki Hata, Shun'ichi Shinohara

Tachyon condensation on a bosonic D-brane was recently demonstrated numerically in Witten's open string field theory with level truncation approximation. This non-perturbative vacu…

hep-th2000★ 12 cited

Symmetry Origin of Nonlinear Monopole

Koji Hashimoto, Takayuki Hirayama, Sanefumi Moriyama

We revisit the non-linear BPS equation: the Dirac monopole of the Born-Infeld theory in the B-field background. The rotation used in our previous papers to discuss the scalar field…

hep-th2000★ 59 cited

Quantum Fluctuations of Bulk Inflaton in Inflationary Brane World

Shinpei Kobayashi, Kazuya Koyama, Jiro Soda

The inflationary scenario for the brane world driven by the bulk inflaton is proposed. The quantum fluctuations of the inflaton is calculated and compared to those of the conventio…

hep-th2000★ 29 cited

Free Field Appoach to String Theory on AdS_3

Kazuo Hosomichi, Kazumi Okuyama, Yuji Satoh

We discuss the correlation functions of the SL(2,C)/SU(2) WZW model, or the CFT on the Euclidean AdS_3. We argue that their calculation is reduced to that of a free theory by takin…

hep-th2000★ 40 cited

Orientifold Planes, Type I Wilson Lines and Non-BPS D-branes

Yoshifumi Hyakutake, Yosuke Imamura, Shigeki Sugimoto

There is a longstanding puzzle concerned with the existence of Op~-planes with p>=6, which are orientifold p-planes of negative charge with stuck Dp-branes. We study the consistenc…

hep-th2000★ 15 cited

Self-Tuning Dark Energy in Brane World Cosmology

K. Uzawa, J. Soda

Recently, the self-tuning mechanism of cancellation of vacuum energy has been proposed in which our universe is a flat 3-brane in a 5-dimensional spacetime. In this letter, the sel…

hep-th2000★ 15 cited

Nondegenerate Super-Anti-de Sitter Algebra and a Superstring Action

Machiko Hatsuda, Kiyoshi Kamimura, Makoto Sakaguchi

We construct an Anti-de Sitter(AdS) algebra in a nondegenerate superspace. Based on this algebra we construct a covariant kappa-symmetric superstring action, and we examine its dyn…

hep-th2000★ 14 cited

The M2-brane Soliton on the M5-brane with Constant 3-Form

Yoji Michishita

We obtain a BPS soliton of the effective theory of the M5-brane worldvolume with constant 3-form representing M2-branes ending on the M5-brane. The dimensional reduction of this so…

hep-th2000★ 3 cited

Gravitational Stability and Screening Effect from D Extra Timelike Dimensions

Satoshi Matsuda, Shigenori Seki

We study (3+1)+D dimensional spacetime, where D extra dimensions are timelike. Compactification of the D timelike dimensions leads to tachyonic Kaluza-Klein gravitons. We calculate…

hep-th2000★ 11 cited

Comment on Ambiguities in the Holographic Weyl Anomaly

M. Fukuma, T. Sakai

We consider possible ambiguities in the holographic Weyl anomaly that are caused by local terms in the flow equation. We point out that such ambiguities actually do not give physic…

hep-th2000★ 20 cited

Gepner-like Description of a String Theory on a Noncompact Singular Calabi-Yau Manifold

Satoshi Yamaguchi

We investigate a Gepner-like superstring model described by a combination of multiple minimal models and an N=2 Liouville theory. This model is thought to be equivalent to the supe…

hep-th2000★ 29 cited

A Note on the Weyl Anomaly in the Holographic Renormalization Group

Masafumi Fukuma, So Matsuura, Tadakatsu Sakai

We give a prescription for calculating the holographic Weyl anomaly in arbitrary dimension within the framework based on the Hamilton-Jacobi equation proposed by de Boer, Verlinde…

hep-th2000★ 42 cited

Non-Linear Electrodynamics in Curved Backgrounds

Gary W. Gibbons, Koji Hashimoto

We study non-linear electrodynamics in curved space from the viewpoint of dualities. After establishing the existence of a topological bound for self-dual configurations of Born-In…

hep-th2000

Path Integrals on Riemannian Manifolds with Symmetry and Induced Gauge Structure

Shogo Tanimura

We formulate path integrals on any Riemannian manifold which admits the action of a compact Lie group by isometric transformations. We consider a path integral on a Riemannian mani…