scholarly journals String field theory solution for any open string background. Part II

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Theodore Erler ◽  
Carlo Maccaferri
Keyword(s):  
Field Theory ◽  
String Field Theory ◽  
Open String ◽  
String Background ◽  
Theory Solution

scholarly journals TACHYON DYNAMICS IN OPEN STRING THEORY

2005 ◽  
Vol 20 (24) ◽  
pp. 5513-5656 ◽  
Author(s):  
ASHOKE SEN
Keyword(s):  
Field Theory ◽  
String Theory ◽  
String Field Theory ◽  
Quantum Dynamics ◽  
Open String ◽  
Closed String ◽  
Two Dimensional ◽  
Potential Models ◽  
Conformal Field ◽  
String Background

In this review we describe our current understanding of the properties of open string tachyons on an unstable D-brane or brane–antibrane system in string theory. The various string theoretic methods used for this study include techniques of two-dimensional conformal field theory, open string field theory, boundary string field theory, noncommutative solitons, etc. We also describe various attempts to understand these results using field theoretic methods. These field theory models include toy models like singular potential models and p-adic string theory, as well as more realistic version of the tachyon effective action based on Dirac–Born–Infeld type action. Finally we study closed string background produced by the "decaying" unstable D-branes, both in the critical string theory and in the two-dimensional string theory, and describe the open string completeness conjecture that emerges out of this study. According to this conjecture the quantum dynamics of an unstable D-brane system is described by an internally consistent quantum open string field theory without any need to couple the system to closed strings. Each such system can be regarded as a part of the "hologram" describing the full string theory.

scholarly journals PROJECTION OPERATORS AND D-BRANES IN PURELY CUBIC OPEN STRING FIELD THEORY

2001 ◽  
Vol 16 (28) ◽  
pp. 1811-1821 ◽  
Author(s):  
YUTAKA MATSUO
Keyword(s):  
Field Theory ◽  
String Field Theory ◽  
Open String ◽  
Closed String ◽  
Kinetic Term ◽  
Classical Solutions ◽  
Projection Operators ◽  
Open Strings ◽  
String Background ◽  
The Given

We study a matrix version of the purely cubic open string field theory as describing the expansion around the closed string vacuum. Any D-branes in the given closed string background can appear as classical solutions by using the identity projectors. Expansion around this solution gives the correct kinetic term for the open strings on the created D-branes while there are some subtleties in the unwanted degree of freedom.

ONE-LOOP VACUUM ENERGY AT THE TACHYON VACUUM

2013 ◽  
Vol 21 ◽  
pp. 157-158
Author(s):  
SHOKO INATOMI
Keyword(s):  
Field Theory ◽  
Quantum Theory ◽  
String Field Theory ◽  
Vacuum Energy ◽  
Open String ◽  
Brst Operator ◽  
Identity Based ◽  
Homotopy Operators

We consider one-loop vacuum energy at the tachyon vacuum in cubic bosonic open string field theory. The BRST operator Ql in the theory around an identity-based solution is believed to represent a kinetic operator at the tachyon vacuum. Using homotopy operators for Ql, we find that one-loop vacuum energy at the tachyon vacuum is independent of moduli such as interbrane distances. This result can be interpreted as support for the annihilation of D-branes at the tachyon vacuum even in the quantum theory.

scholarly journals Classical Solutions and Order of Zeros in Open String Field Theory

2005 ◽  
Vol 114 (3) ◽  
pp. 695-706 ◽  
Author(s):  
Y. Igarashi ◽  
K. Itoh ◽  
F. Katsumata ◽  
T. Takahashi ◽  
S. Zeze
Keyword(s):  
Field Theory ◽  
String Field Theory ◽  
Open String ◽  
Classical Solutions

The bosonic open string field theory with Wess-Zumino term

1989 ◽  
Vol 217 (4) ◽  
pp. 421-426
Author(s):  
Yu-liang Liu ◽  
Guang-jiong Ni
Keyword(s):  
Field Theory ◽  
String Field Theory ◽  
Open String

scholarly journals Gauge-invariant observables and marginal deformations in open string field theory

2013 ◽  
Vol 2013 (1) ◽  
Author(s):  
Matěj Kudrna ◽  
Toru Masuda ◽  
Yuji Okawa ◽  
Martin Schnabl ◽  
Kenichiro Yoshida
Keyword(s):  
Field Theory ◽  
String Field Theory ◽  
Open String ◽  
Gauge Invariant ◽  
Marginal Deformations
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