期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 8, 页码 -出版社
SPRINGER
DOI: 10.1088/1126-6708/2009/08/048
关键词
String Field Theory; Tachyon Condensation; Superstrings and Heterotic Strings
资金
- U.S. Department of Energy (D.O.E.) [DE-FG0205ER41360]
- European Community
We prove that the NS cubic superstring field theories are classically equivalent, regardless of the choice of Y-2 in their definition, and illustrate it by an explicit evaluation of the action of Erler's solution. We then turn to examine this solution. First, we explain that its cohomology is trivial also in the Ramond sector. Then, we show that the boundary state corresponding to it is identically zero. We conclude that this solution is indeed a closed string vacuum solution despite the absence of a tachyon field on the BPS D-brane.
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