Entanglement entropy of charged dilaton-axion black hole and quantum isolated horizon
School of mathematics and computer science, Shaixi Datong University, 037009, Datong, China
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Accepted: 18 July 2016
Published online: 9 September 2016
Based on the work of Ghosh and Perez, we calculate the statistical entropy of charged dilaton-axion black hole. In the calculations we take the integral from the position of QIH to infinity, so the obtained entropy is the entanglement entropy outside the QIH. It is shown that only if the position of QIH is properly chosen the leading term of logarithm of the number of quantum states on the QIH is equal to the leading term of the entanglement entropy outside the black hole horizon, and both are the Bekenstein-Hawking entropy. The results reveal the relation between the entanglement entropy of black hole and the logarithm of the number of quantum states.
© Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg, 2016