Boundary observables analogous to Brown-York charges are constructed in free and interacting string field theory, with examples in open and closed SFT.
String field theory solution corresponding to constant background magnetic field
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abstract
Following the method recently proposed by Erler and Maccaferri, we construct solutions to the equation of motion of Witten's cubic string field theory, which describe constant magnetic field background. We study the boundary condition changing operators relevant to such background and calculate the operator product expansions of them. We obtain solutions whose classical action coincide with the Born-Infeld action.
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hep-th 1years
2026 1verdicts
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Boundary observables in string field theory
Boundary observables analogous to Brown-York charges are constructed in free and interacting string field theory, with examples in open and closed SFT.