A simple solution for marginal deformations in open string field theory
arXiv:1402.3546 · doi:10.1007/JHEP05(2014)004
Abstract
We derive a new open string field theory solution for boundary marginal deformations generated by chiral currents with singular self-OPE. The solution is algebraically identical to the Kiermaier-Okawa-Soler solution and it is gauge equivalent to the Takahashi-Tanimoto identity-based solution. It is wedge-based and we can analytically evaluate the Ellwood invariant and the action, reproducing the expected results from BCFT. By studying the isomorphism between the states of the initial and final background a dual derivation of the Ellwood invariant is also obtained.
34 pages, no figures V3: typos and minors, one ref. added, published version
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- Closed string deformations in open string field theory I: bosonic string
- Time-Symmetric Rolling Tachyon Profile
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- Comments on Observables for Identity-Based Marginal Solutions in Berkovits' Superstring Field Theory
- Lattice String Field Theory: The linear dilaton in one dimension