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arXiv · 1308.4964

Entanglement and Thermal Entropy of Gauge Fields

Christopher Eling·Yaron Oz·Stefan Theisen
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Abstract

We consider the universal logarithmic divergent term in the entanglement entropy of gauge fields in the Minkowski vacuum with an entangling sphere. Employing the mapping in arXiv:1102.0440, we analyze the corresponding thermal entropy on open Einstein universe and on the static patch of de Sitter. Using the heat kernel of the vector Laplacian we resolve a discrepancy between the free field calculation and the expected Euler conformal anomaly. The resolution suggests a modification of the well known formulas for the vacuum expectation value of the spin-1 energy-momentum tensor on conformally flat space-times.

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Christopher Eling, Yaron Oz, Stefan Theisen. 2013-08-22. Entanglement and Thermal Entropy of Gauge Fields. https://doi.org/10.1007/jhep11(2013)019

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