34 research outputs found
Entanglement Entropy for the Charged BTZ Black Hole
Using the AdS/CFT correspondence we calculate the explicit form of the
entanglement entropy for the charged BTZ black hole. The leading term in the
large temperature expansion of the entropy function for this black hole
reproduces its Bekenstein-Hawking entropy and the subleading term, representing
the first corrections due to quantum entanglement, behaves as a logarithm of
the BH entropy.Comment: 5 page
Entropy Corrections for a Charged Black Hole of String Theory
We study the entropy of the Gibbons-Maeda-Garfinkle-Horowitz-Strominger
(GMGHS) charged black hole, originated from the effective action that emerges
in the low-energy of string theory, beyond semiclassical approximations.
Applying the properties of exact differentials for three variables to the first
law thermodynamics we derive the quantum corrections to the entropy of the
black hole. The leading (logarithmic) and non leading corrections to the area
law are obtained.Comment: 7 pages. Corrected reference