Thermodynamics of Gauss-Bonnet-Dilaton Lifshitz Black Branes

TL;DR

This paper constructs and analyzes Lifshitz black brane solutions in Gauss-Bonnet-dilaton gravity, deriving thermodynamic relations, confirming no-hair properties, and demonstrating thermal stability of the solutions.

Contribution

It introduces a new class of Lifshitz black branes in Gauss-Bonnet-dilaton gravity with finite action and thermodynamic relations, extending previous models.

Findings

The solutions respect the no-hair theorem.

The energy density relates to temperature and entropy via a generalized Smarr formula.

The black branes are thermally stable.

Abstract

We explore an effective supergravity action in the presence of a massless gauge field which contains the Gauss-Bonnet term as well as a dilaton field. We construct a new class of black brane solutions of this theory with the Lifshitz asymptotic by fixing the parameters of the model such that the asymptotic Lifshitz behavior can be supported. Then we construct the well-defined finite action through the use of the counterterm method. We also obtain two independent constants along the radial coordinate by combining the equations of motion. Calculations of these two constants at infinity through the use of the large-$r$ behavior of the metric functions show that our solution respects the no-hair theorem. Furthermore, we combine these two constants in order to get a constant $C$ which is proportional to the energy of the black brane. We calculate this constant at the horizon in terms of the temperature and entropy, and at large-$r$ in terms of the geometrical mass. By calculating the value of the energy density through the use of the counterterm method, we obtain the relation between the energy density, the temperature, and the entropy. This relation is the generalization of the well-known Smarr formula for AdS black holes. Finally, we study the thermal stability of our black brane solution and show that it is stable under thermal perturbations.