scholarly journals Closed string tachyons, AdS/CFT, and large N QCD

2001 ◽  
Vol 64 (8) ◽  
Author(s):  
Allan Adams ◽  
Eva Silverstein
Keyword(s):  
Closed String ◽  
Large N ◽  
Closed String Tachyons

scholarly journals CLOSED STRING TACHYONS ON C/ZN

2004 ◽  
Vol 19 (32) ◽  
pp. 5625-5638 ◽  
Author(s):  
S. SARKAR ◽  
B. SATHIAPALAN
Keyword(s):  
Point Interaction ◽  
Closed String ◽  
Effective Field ◽  
Quartic Coupling ◽  
Interaction Terms ◽  
Large N ◽  
Quartic Term ◽  
Quartic Interaction ◽  
Interaction Term ◽  
Closed String Tachyons

We analyze the condensation of closed string tachyons on the C/ZN orbifold. We construct the potential for the tachyons up to the quartic interaction term in the large N limit. In this limit there are near marginal tachyons. The quartic coupling for these tachyons is calculated by subtracting from the string theory amplitude for the tachyons, the contributions from the massless exchanges, computed from the effective field theory. We argue that higher point interaction terms are also of the same order in 1/N as the quartic term and are necessary for existence of the minimum of the tachyon potential that is consistent with earlier analysis.

scholarly journals Closed-String Tachyons and the Hagedorn Transition in AdS Space

2002 ◽  
Vol 2002 (03) ◽  
pp. 057-057 ◽  
Author(s):  
José L.F Barbón ◽  
Eliezer Rabinovici
Keyword(s):  
Closed String ◽  
Closed String Tachyons

scholarly journals Closed string tachyons on AdS orbifolds and dual Yang-Mills instantons

2007 ◽  
Vol 2007 (09) ◽  
pp. 021-021 ◽  
Author(s):  
Yasuaki Hikida ◽  
Norihiro Iizuka
Keyword(s):  
Closed String ◽  
Yang Mills ◽  
Closed String Tachyons

scholarly journals On the CSFT approach to localized closed string tachyons

2005 ◽  
Vol 2005 (01) ◽  
pp. 014-014 ◽  
Author(s):  
Oren Bergman ◽  
Shlomo S Razamat
Keyword(s):  
Closed String ◽  
Closed String Tachyons

scholarly journals ON THE GAUGE/GRAVITY CORRESPONDENCE AND THE OPEN/CLOSED STRING DUALITY

2005 ◽  
Vol 20 (20n21) ◽  
pp. 4699-4795 ◽  
Author(s):  
PAOLO DI VECCHIA ◽  
ANTONELLA LICCARDO ◽  
RAFFAELE MAROTTA ◽  
FRANCO PEZZELLA
Keyword(s):  
String Duality ◽  
Closed String ◽  
String Models ◽  
Supersymmetric Theories ◽  
Gauge Gravity ◽  
Closed String Tachyons

In this paper we review the conditions for the validity of the gauge/gravity correspondence in both supersymmetric and nonsupersymmetric string models. We start by reminding what happens in type IIB theory on the orbifolds ℂ2/ℤ2and ℂ3/(ℤ2x ℤ2), where this correspondence beautifully works. In these cases, by performing a complete stringy calculation of the interaction among D3-branes, it has been shown that the fact that this correspondence works is a consequence of the open/closed duality and of the absence of threshold corrections. Then we review the construction of type 0 theories with their orbifolds and orientifolds having spectra free from both open and closed string tachyons and for such models we study the validity of the gauge/gravity correspondence, concluding that this is not a peculiarity of supersymmetric theories, but it may work also for nonsupersymmetric models. Also in these cases, when it works, it is again a consequence of the open/closed string duality and of vanishing threshold corrections.

scholarly journals UNITARY MATRIX MODELS AND 2D QUANTUM GRAVITY

1992 ◽  
Vol 07 (29) ◽  
pp. 2753-2762 ◽  
Author(s):  
S. DALLEY ◽  
C. V. JOHNSON ◽  
T. R. MORRIS ◽  
A. WÄTTERSTAM
Keyword(s):  
Matrix Models ◽  
Integrable Hierarchies ◽  
Renormalization Group Equation ◽  
Closed String ◽  
Singular Solutions ◽  
Unitary Matrix ◽  
Group Equation ◽  
Gravitational System ◽  
Large N ◽  
Matrix Integrals

The KdV and modified KdV integrable hierarchies are shown to be different descriptions of the same 2D gravitational system — open-closed string theory. Non-perturbative solutions of the multicritical unitary matrix models map to non-singular solutions of the 'renormalization group' equation for the string susceptibility, [Formula: see text]. We also demonstrate that the large-N solutions of unitary matrix integrals in external fields, studied by Gross and Newman, equal the non-singular pure closed-string solutions of [Formula: see text].

scholarly journals A REVIEW OF SYMMETRY ALGEBRAS OF QUANTUM MATRIX MODELS IN THE LARGE N LIMIT

1999 ◽  
Vol 14 (28) ◽  
pp. 4395-4455 ◽  
Author(s):  
C.-W. H. LEE ◽  
S. G. RAJEEV
Keyword(s):  
Matrix Models ◽  
Lie Algebras ◽  
Virasoro Algebra ◽  
Open String ◽  
Closed String ◽  
Quantum Spin ◽  
Cuntz Algebra ◽  
Large N ◽  
Effective Models ◽  
Quantum Matrix

This is a review article in which we will introduce, in a unifying fashion and with more intermediate steps in some difficult calculations, two infinite-dimensional Lie algebras of quantum matrix models, one for the open string sector and the other for the closed string sector. Physical observables of quantum matrix models in the large N limit can be expressed as elements of these Lie algebras. We will see that both algebras arise as quotient algebras of a larger Lie algebra. We will also discuss some properties of these Lie algebras not published elsewhere yet, and briefly review their relationship with well-known algebras like the Cuntz algebra, the Witt algebra and the Virasoro algebra. We will also review how the Yang–Mills theory, various low energy effective models of string theory, quantum gravity, string-bit models, and the quantum spin chain models can be formulated as quantum matrix models. Studying these algebras thus help us understand the common symmetry of these physical systems.

scholarly journals Don't panic! closed string tachyons in ALE spacetimes

2001 ◽  
Vol 2001 (10) ◽  
pp. 029-029 ◽  
Author(s):  
Allan Adams ◽  
Joseph Polchinski ◽  
Eva Silverstein
Keyword(s):  
Closed String ◽  
Closed String Tachyons
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