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arxiv: 2604.01273 · v2 · pith:NTNRD6TNnew · submitted 2026-04-01 · ✦ hep-th

Symplectic structure in open string field theory III: Electric field

Vin\'icius Bernardes , Theodore Erler , Atakan Hilmi F{\i}rat This is my paper
classification ✦ hep-th
keywords fieldopenstringelectricenergystructuresymplectictheory
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We use a new formula for the symplectic structure on the phase space of open string field theory to evaluate the energy of a D-brane carrying a constant electric flux. This is shown to be consistent with the energy computed using the Dirac-Born-Infeld action through a generalization of the Ellwood invariant to nonpolynomial open string field theories.

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