Exploring the~vacuum structure near identity-based solutions
Teoretičeskaâ i matematičeskaâ fizika, Tome 163 (2010) no. 3, pp. 381-390
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We explore the vacuum structure in the bosonic open string field theory expanded near an identity-based solution parameterized by $a$ ($\ge-1/2$). Analyzing the expanded theory using the level-truncation approximation up to the level $20$, we find that the theory has the tachyon vacuum solution for $a>-1/2$. We also find that at $a=-1/2$, there exists an unstable vacuum solution in the expanded theory and the solution is expected to be the perturbative open string vacuum. These results reasonably support the hypothesis that the identity-based solution is a trivial pure gauge configuration for $a>-1/2$, but it can be regarded as the tachyon vacuum solution at $a=-1/2$.
Keywords:
string field theory, tachyon condensation, identity-based solution.
@article{TMF_2010_163_3_a3,
author = {I. Kishimoto and {\CYRT}. Takahashi},
title = {Exploring the~vacuum structure near identity-based solutions},
journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
pages = {381--390},
publisher = {mathdoc},
volume = {163},
number = {3},
year = {2010},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/TMF_2010_163_3_a3/}
}
TY - JOUR AU - I. Kishimoto AU - Т. Takahashi TI - Exploring the~vacuum structure near identity-based solutions JO - Teoretičeskaâ i matematičeskaâ fizika PY - 2010 SP - 381 EP - 390 VL - 163 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_2010_163_3_a3/ LA - ru ID - TMF_2010_163_3_a3 ER -
I. Kishimoto; Т. Takahashi. Exploring the~vacuum structure near identity-based solutions. Teoretičeskaâ i matematičeskaâ fizika, Tome 163 (2010) no. 3, pp. 381-390. http://geodesic.mathdoc.fr/item/TMF_2010_163_3_a3/