Near Extremal Black Hole Entropy as Entanglement Entropy via AdS(2)/CFT(1)
Oct, 200731 pages
Published in:
- Phys.Rev.D 77 (2008) 064005
e-Print:
- 0710.2956 [hep-th]
Report number:
- KUNS-2105
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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
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