Near Extremal Black Hole Entropy as Entanglement Entropy via AdS(2)/CFT(1)

Oct, 2007
31 pages
Published in:
  • Phys.Rev.D 77 (2008) 064005
e-Print:
Report number:
  • KUNS-2105

Citations per year

20072012201720222025051015
Abstract: (arXiv)
We point out that the entropy of (near) extremal black holes can be interpreted as the entanglement entropy of dual conformal quantum mechanics via AdS2/CFT1. As an explicit example, we study near extremal BTZ black holes and derive this claim from AdS3/CFT2. We also analytically compute the entanglement entropy in the two dimensional CFT of a free Dirac fermion compactified on a circle at finite temperature. From this result, we clarify the relation between the thermal entropy and entanglement entropy, which is essential for the entanglement interpretation of black hole entropy.
  • 04.50.Gh
  • 04.70.Dy
  • entropy: entanglement
  • field theory: conformal
  • black hole: entropy
  • black hole: BTZ
  • AdS/CFT correspondence
  • two-point function
  • high temperature expansion