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arXiv 0709.2888hep-th
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开弦场论中快子真空附近的涨落

Fluctuations around the Tachyon Vacuum in Open String Field Theory

O-Kab Kwon, Bum-Hoon Lee, Chanyong Park, Sang-Jin Sin

备注：
16 pages, 2 figures, some comments and one table added, version to appear in JHEP
发表信息：
JHEP 0712:038,2007
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摘要：

我们在开弦场论中数值地考虑快子真空周围的二次涨落。我们在Schnabl真空解中所用的基本弦态所张成的空间${\cal H}_N^{\rm vac}$上工作。我们表明，截断形式的Schnabl的真空解决方案${\cal H}_N^{\rm vac}$在数值工作中表现良好。得到了新的BRST算子$\tilde Q$在${\cal H}_N^{\rm vac}$上的正交基和真空周围独立场的势的二次型。我们的数值结果支持了Schnabl真空解也是开弦场论中任意涨落的最小能量解。

英文摘要：

We consider quadratic fluctuations around the tachyon vacuum numerically in open string field theory. We work on a space ${\cal H}_N^{\rm vac}$ spanned by basis string states used in the Schnabl's vacuum solution. We show that the truncated form of the Schnabl's vacuum solution on ${\cal H}_N^{\rm vac}$ is well-behaved in numerical work. The orthogonal basis for the new BRST operator $\tilde Q$ on ${\cal H}_N^{\rm vac}$ and the quadratic forms of potentials for independent fields around the vacuum are obtained. Our numerical results support that the Schnabl's vacuum solution represents the minimum energy solution for arbitrary fluctuations also in open string field theory.

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