Extended First Law for Entanglement Entropy in Lovelock Gravity

Apr 15, 2016
18 pages
Published in:
  • Entropy 18 (2016) 6, 212
e-Print:
Report number:
  • ACFI-T16-13

Citations per year

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Abstract: (arXiv)
The first law for the holographic entanglement entropy of spheres in a boundary CFT with a bulk Lovelock dual is extended to include variations of the bulk Lovelock coupling constants. Such variations in the bulk correspond to perturbations within a family of boundary CFTs. The new contribution to the first law is found to be the product of the variation δa\delta a of the A-type trace anomaly coefficient for even dimensional CFTs, or more generally its extension δa\delta a^* to include odd dimensional boundaries, times the ratio S/aS/a^*. Since aa^* is a measure of the number of degrees of freedom NN per unit volume of the boundary CFT, this new term has the form μδN\mu\delta N, where the chemical potential μ\mu is given by the entanglement entropy per degree of freedom.
Note:
  • 18 pages
  • entropy: entanglement
  • potential: chemical
  • gravitation: Lovelock
  • trace anomaly
  • perturbation
  • duality: holography
  • field theory: conformal
  • sphere