The nonperturbative closed string tachyon vacuum to high level
High Energy Physics - Theory
2010-10-27 v2
Abstract
We compute the action of closed bosonic string field theory at quartic order with fields up to level ten. After level four, the value of the potential at the minimum starts oscillating around a nonzero negative value, in contrast with the proposition made in [5]. We try a different truncation scheme in which the value of the potential converges faster with the level. By extrapolating these values, we are able to give a rather precise value for the depth of the potential.
Cite
@article{arxiv.hep-th/0609208,
title = {The nonperturbative closed string tachyon vacuum to high level},
author = {Nicolas Moeller and Haitang Yang},
journal= {arXiv preprint arXiv:hep-th/0609208},
year = {2010}
}
Comments
24 pages. v2: typos corrected, clarified extrapolation in scheme B, and added extrapolated tachyon and dilaton vev's at the end of Section 3