The Entropy Relations of Black Holes with Multihorizons in Higher Dimensions

Understand

We study the entropy relations of multi-horizons black holes in higher dimensional (A)dS spacetime with maximal symmetries, including Einstein-Maxwell gravity and $f(R)$(-Maxwell) gravity.

• These additional equalities in thermodynamics are expected to be useful to understanding the origin of black hole entropy at the microscopic level.
• Revisiting the entropy product introduced by Cvetic etc, in our case, it has an unexpected behavior.
• It is shown that this electric charge $Q$ plays an important role in this entropy product.