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Light-cone reduction of Witten's open string field theory
2019
Journal of High Energy Physics
We elucidate some exact relations between light-cone and covariant string field theories on the basis of the homological perturbation lemma for A ∞ . The covariant string field splits into the light-cone string field and trivial excitations of BRST quartets: the latter generates the gauge symmetry and covariance. We first show that the reduction of gauge degrees can be performed by applying the lemma, which gives a refined version of the no-ghost theorem of covariant strings. Then, we
doi:10.1007/jhep04(2019)143
fatcat:hspijl2d4fhcpki32wqe3vnz54