Numerical solution for tachyon vacuum in the Schnabl gauge
arXiv:1908.05330 · doi:10.1007/JHEP02(2020)065
Abstract
Based on the level truncation scheme, we develop a new numerical method to evaluate the tachyon vacuum solution in the Schnabl gauge up to level . We confirm the prediction that the energy associated to this numerical solution has a local minimum at level . Extrapolating the energy data of to infinite level, we observe that the energy goes towards the analytical value , nevertheless the precision of the extrapolation is lower than in the Siegel gauge. Furthermore, we analyze the Ellwood invariant and show that its value converges monotonically towards the expected analytical result. We also study the tachyon vacuum expectation value (vev) and some other coefficients of the solution. Finally, some consistency checks of the solution are performed, and we briefly discuss the search for other Schnabl gauge numerical solutions.
31 pages, 3 figures, appendix A added
References in corpus (11)
- Comments on Schnabl's analytic solution for tachyon condensation in Witten's open string field theory
- A Simple Analytic Solution for Tachyon Condensation
- Analytic Solutions for Marginal Deformations in Open String Field Theory
- Schnabl's L_0 Operator in the Continuous Basis
- Comments on regularization of identity based solutions in string field theory
- Level truncation analysis of exact solutions in open string field theory
- Numerical Evaluation of Gauge Invariants for -gauge Solutions in Open String Field Theory
- Conservation laws and tachyon potentials in the sliver frame
- String field representation of the Virasoro algebra
- Comments on real tachyon vacuum solution without square roots
- Numerical solution of open string field theory in Schnabl gauge