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<p>We use a new formula for symplectic structure to compute the momentum of an analytic lump solution moving at constant velocity in Witten’s open string field theory. The computation gives a new way to determine the D-brane tension in string field theory. Using homotopy algebra technology, we prove that this tension must agree with the value implied by the on-shell action.</p>

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Symplectic structure in open string field theory. Part II. Sliding lump

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年2月4日

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  • Vinícius Bernardes,
  • Theodore Erler,
  • Atakan Hilmi Fırat

摘要

We use a new formula for symplectic structure to compute the momentum of an analytic lump solution moving at constant velocity in Witten’s open string field theory. The computation gives a new way to determine the D-brane tension in string field theory. Using homotopy algebra technology, we prove that this tension must agree with the value implied by the on-shell action.