Universal local operator quenches and entanglement entropy

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dc.contributor.author Bhattacharyya, Arpan
dc.contributor.author Takayanagi, Tadashi
dc.contributor.author Umemoto, Koji
dc.date.accessioned 2019-12-07T11:19:22Z
dc.date.available 2019-12-07T11:19:22Z
dc.date.issued 2019-11
dc.identifier.citation Bhattacharyya, Arpan; Takayanagi, Tadashi and Umemoto, Koji, "Universal local operator quenches and entanglement entropy", Journal of High Energy Physics, DOI: 10.1007/JHEP11(2019)107, vol. 2019, no. 11, pp. 107, Nov. 2019. en_US
dc.identifier.issn 1126-6708
dc.identifier.issn 1029-8479
dc.identifier.uri https://doi.org/10.1007/JHEP11(2019)107
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/5004
dc.description.abstract We present a new class of local quenches described by mixed states, parameterized universally by two parameters. We compute the evolutions of entanglement entropy for both a holographic and Dirac fermion CFT in two dimensions. This turns out to be equivalent to calculations of two point functions on a torus. We find that in holographic CFTs, the results coincide with the known results of pure state local operator quenches. On the other hand, we obtain new behaviors in the Dirac fermion CFT, which are missing in the pure state counterpart. By combining our results with the inequalities known for von-Neumann entropy, we obtain an upper bound of the pure state local operator quenches in the Dirac fermion CFT. We also explore predictions about the behaviors of entanglement entropy for more general mixed states.
dc.description.statementofresponsibility by Arpan Bhattacharyya,Tadashi Takayanagi and Koji Umemoto
dc.format.extent vol. 2019, no. 11, pp. 107
dc.language.iso en_US en_US
dc.publisher Springer Verlag en_US
dc.subject AdS-CFT Correspondence en_US
dc.subject Conformal Field Theory en_US
dc.subject Black Holes en_US
dc.title Universal local operator quenches and entanglement entropy en_US
dc.type Article en_US
dc.relation.journal Journal of High Energy Physics


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