Numerical Evaluation of Gauge Invariants for a-gauge Solutions in Open String Field Theory

Abstract

We evaluate gauge invariants, action and gauge invariant overlap, for numerical solutions which satisfy the "a-gauge" condition with various values of $a$ in cubic open bosonic string field theory. We use the level truncation approximation and an iterative procedure to construct numerical solutions in the twist even universal space. The resulting gauge invariants are numerically stable and almost equal to those of Schnabl's solution for tachyon condensation. Our result provides further evidence that these numerical and analytical solutions are gauge equivalent.

12 pages, 3 figures; new numerical data up to level (20,60) included; Contribution to the proceedings of "Second International Conference on String Field Theory and Related Aspects" (Steklov Mathematical Institute, Moscow, Russia, April 12-19, 2009)

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• The closed string tadpole in open string field theory
• Gauge Invariant Overlaps for Classical Solutions in Open String Field Theory
• New Covariant Gauges in String Field Theory
• Schnabl's Solution and Boundary States in Open String Field Theory
• Numerical Evaluation of Gauge Invariants for $a$-gauge Solutions in Open String Field Theory
• General Linear Gauges and Amplitudes in Open String Field Theory
• Level Truncated Tachyon Potential in Various Gauges

Cited by in corpus (5)

• Numerical solution for tachyon vacuum in the Schnabl gauge
• Numerical solution of open string field theory in Schnabl gauge
• Level Truncation Approach to Open String Field Theory
• Numerical twist-even SU(1,1)-singlet solutions in open string field theory around the identity-based solution
• Numerical universal solutions in $a$-gauge in open string field theory