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<p>We present simple explicit formulae for the change of the <i>g</i>-function, boundary state, boundary spectrum and structure constants between the endpoints of short boundary RG flows at next-to-leading order. The formulae are derived using open string field theory and tested on integrable RG flows between conformal boundary states in unitary Virasoro minimal models.</p>

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Observables of boundary RG flows from string field theory

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月9日

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  • Jaroslav Scheinpflug,
  • Martin Schnabl,
  • Jakub Vošmera

摘要

We present simple explicit formulae for the change of the g-function, boundary state, boundary spectrum and structure constants between the endpoints of short boundary RG flows at next-to-leading order. The formulae are derived using open string field theory and tested on integrable RG flows between conformal boundary states in unitary Virasoro minimal models.