Journal of High Energy Physics (Apr 2025)

Rolling tachyon and the phase space of open string field theory

  • Minjae Cho,
  • Ben Mazel,
  • Xi Yin

DOI
https://doi.org/10.1007/JHEP04(2025)129
Journal volume & issue
Vol. 2025, no. 4
pp. 1 – 29

Abstract

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Abstract We construct the symplectic form on the covariant phase space of the open string field theory on a ZZ-brane in c = 1 string theory, and determine the energy of the rolling tachyon solution, confirming Sen’s earlier proposal based on boundary conformal field theory and closed string considerations.

Keywords