Level truncation analysis of a simple tachyon vacuum solution in cubic superstring field theory
arXiv:1409.1890 · doi:10.1007/JHEP12(2014)069
Abstract
We evaluate the vacuum energy of a simple tachyon vacuum solution using the level truncation scheme in cubic superstring field theory. By truncating the standard Virasoro level expansion of the solution, we obtain a value of the vacuum energy in agreement with Sen's first conjecture.
arXiv comment20 pages, extra factor 2/πdeleted from equation (3.2), some typos corrected
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