Critical Behaviors of 3D Black Holes with a Scalar Hair

Abstract

The principal focus of the present work concerns the critical behaviors of a class of three dimensional black holes with a scalar field hair. Since the cosmological constant is viewed as a thermodynamic pressure and its conjugate quantity as a volume, we examine such properties in terms of two parameters B and a. The latters are related to the scalar field and the angular momentum respectively. In particular, we give the equation of state predicting a critical universal number depending on the (B,a) moduli space. In the vanishing limit of the B parameter, we recover the usual perfect gas behavior appearing in the case of the non rotating BTZ black hole. We point out that in a generic region of the (B,a) moduli space, the model behaves like a Van der Waals system.

11 pages, 4 figures(eps), latex, major revision. Accepted for publication in IJGMMP. Updated references and another additional author

References in corpus (3)

• Black Hole Enthalpy and an Entropy Inequality for the Thermodynamic Volume
• Charged black hole with a scalar hair in (2+1) dimensions
• The generalized second law of thermodynamics and the nature of the Entropy Function

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