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arXiv 1306.6532hep-th
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边缘形变背景下开弦场论的数值解

Numerical Solutions of Open String Field Theory in Marginally Deformed Backgrounds

Isao Kishimoto, Tomohiko Takahashi

摘要:

本文研究了玻色开弦场论在边缘形变背景下的数值解,这些解是通过将作用量展开到一个单参数的基于恒等式的边缘解周围而得到的.我们构造了对应于快子真空的Siegel规范和Landau规范的数值解。随着截断能级的增加,真空能近似地抵消了D-膜张力。结果与先前的期望一致,即基于身份的边缘解具有消失的能量,而不管参数的值。我们还研究了边缘支(M支)和真空支(V支),不仅计算了真空能量,而且计算了与引力子和闭合快子的规范不变量重叠。我们观察到,即使在轻微变形的背景下,数值解的无质量场的值也有一个有限的界。

英文摘要:

We investigate numerical solutions of bosonic open string field theory in some marginally deformed backgrounds, which are obtained by expanding the action around an identity-based marginal solution with one parameter. We construct numerical solutions in the Siegel gauge and the Landau gauge corresponding to the tachyon vacuum. Their vacuum energy approximately cancels the D-brane tension for larger intervals of the parameter with increasing truncation level. The result is consistent with the previous expectation that the identity-based marginal solution has vanishing energy regardless of the values of the parameter. We also study the marginal branch (M-branch) and the vacuum branch (V-branch) and evaluate not only the vacuum energy but also the gauge invariant overlaps with the graviton and the closed tachyon. We observe that there is a finite bound for the value of the massless field of numerical solutions even in the marginally deformed background.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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