A perturbative expansion for entanglement entropy in string theory
arXiv:1805.09311 · doi:10.1016/j.nuclphysb.2019.114628
Abstract
We derive a perturbative expansion for space time entanglement entropy in string theory by comparing replica trick constructions on the target space and on the worldsheet. Requiring the two approaches to match implies a set of constrains on the amplitudes involved and produces a non-trivial relation among target space and world sheet entanglement. We will be mainly interested in bosonic string on a flat background but also discuss the superstring generalization.
arXiv commentA new section with an explicit computation has been added, together with a few minor corrections. A couple of errors have been fixed. Matches the version accepted for publication
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