The nonperturbative closed string tachyon vacuum to high level

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.

24 pages. v2: typos corrected, clarified extrapolation in scheme B, and added extrapolated tachyon and dilaton vev's at the end of Section 3

References in corpus (4)

• Comments on Schnabl's analytic solution for tachyon condensation in Witten's open string field theory
• Proof of vanishing cohomology at the tachyon vacuum
• On the validity of the solution of string field theory
• Toy models for closed string tachyon solitons

Cited by in corpus (10)

• Analytical Solutions of Open String Field Theory
• Cosmological solutions of supercritical string theory
• The closed string field theory action vanishes
• String Field Theory Solution for Any Open String Background. II
• Closed Bosonic String Field Theory at Quintic Order II: Marginal Deformations and Effective Potential
• Wilsonian effective potentials and closed string field theory
• Characterizing 4-string contact interaction using machine learning
• Topological recursion for hyperbolic string field theory
• Closed String Tachyon Driving $f(R)$ Cosmology
• Lattice String Field Theory: The linear dilaton in one dimension