A tachyon lump in closed string field theory
High Energy Physics - Theory
2009-12-04 v3
Abstract
We find a codimension one lump solution of closed bosonic string field theory. We consider vertices up to quartic order and include in the string field the tachyon, the ghost dilaton, and a metric fluctuation. While the tachyon profile clearly is that of a lump, we observe that the ghost dilaton is roughly constant in the direction transverse to the lump, equal to the value it takes in the nonperturbative tachyon vacuum. We explain, with a simple model, why this should be expected.
Keywords
Cite
@article{arxiv.0804.0697,
title = {A tachyon lump in closed string field theory},
author = {Nicolas Moeller},
journal= {arXiv preprint arXiv:0804.0697},
year = {2009}
}
Comments
13 pages, 4 figures; typos corrected; clarifications added