Show simple item record Das, Saurya Shankaranarayanan, S. Sur, Sourav 2015-12-22T18:29:25Z 2015-12-22T18:29:25Z 2015-12-22
dc.identifier.citation Das, S., Shankaranarayanan, S., & Sur, S. (2008). Power-law corrections to entanglement entropy of horizons. Physical Review D, 77(6), 064013. doi:10.1103/PhysRevD.77.064013
dc.description Sherpa Romeo green journal. Permission to archive final published version. en_US
dc.description.abstract We re-examine the idea that the origin of black-hole entropy may lie in the entanglement of quantum fields between inside and outside of the horizon. Motivated by the observation that certain modes of gravitational fluctuations in a black-hole background behave as scalar fields, we compute the entanglement entropy of such a field, by tracing over its degrees of freedom inside a sphere. We show that while this entropy is proportional to the area of the sphere when the field is in its ground state, a correction term proportional to a fractional power of area results when the field is in a superposition of ground and excited states. The area law is thus recovered for large areas. Further, we identify location of the degrees of freedom that give rise to the above entropy. en_US
dc.language.iso en_CA en_US
dc.subject Black-hole en_US
dc.subject Entropy en_US
dc.subject Entanglement entropy en_US
dc.subject Degrees of freedom en_US
dc.subject Scalar fields en_US
dc.title Power-law corrections to entanglement entropy of horizons en_US
dc.type Article en_US
dc.publisher.faculty Arts and Science en_US
dc.publisher.department Department of Physics en_US
dc.description.peer-review Yes en_US
dc.publisher.institution University of Lethbridge en_US
dc.publisher.institution Max-Planck-Institut für Gravitationphysik en_US

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