Exploring the vacuum structure near the identity-based solutions
Exploring the vacuum structure near the identity-based solutions
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探索基于身份的解决方案附近的真空结构
DOI：
10.1007/s11232-010-0055-x
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
T. Takahashi
中科院分区：
文献类型：
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作者：
I. Kishimoto;T. Takahashi
我们探讨了玻色开弦场论中的真空结构，它在一个由a（≥−1/2）参数化的基于恒等式的解附近展开。用能级截断近似分析扩展的理论，直到20级，我们发现当a ≥−1/2时，该理论有快子真空解。我们还发现，在a =−1/2时，在展开理论中存在一个不稳定的真空解，并且该解是微扰开弦真空。这些结果合理地支持了这样的假设：当a >−1/2时，基于恒等式的解是一个平凡的纯规范位形，但当a =−1/2时，它可以被看作快子真空解。
We explore the vacuum structure in the bosonic open string field theory expanded near an identity-based solution parameterized by a (≥−1/2). Analyzing the expanded theory using the level-truncation approximation up to the level20, 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.