Nernst branes from special geometry

Abstract

We construct new black brane solutions in $U(1)$ gauged $\mathcal{N}=2$ supergravity with a general cubic prepotential, which have entropy density $s\sim T^{1/3}$ as $T\to 0$ and thus satisfy the Nernst Law. By using the real formulation of special geometry, we are able to obtain analytical solutions in closed form as functions of two parameters, the temperature $T$ and the chemical potential $\mu$. Our solutions interpolate between hyperscaling violating Lifshitz geometries with $(z,\theta )=(0,2)$ at the horizon and $(z,\theta )=(1,-1)$ at infinity. In the zero temperature limit, where the entropy density goes to zero, we recover the extremal Nernst branes of Barisch et al, and the parameters of the near horizon geometry change to $(z,\theta )=(3,1)$.

37 pages. v2: numerical pre-factors of scalar fields q_A corrected in Section 3. No changes to conclusions. References added

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Cited by in corpus (5)

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• From Static to Cosmological Solutions of N=2 Supergravity
• Nernst branes with Lifshitz asymptotics in N=2 gauged supergravity
• Five-dimensional Nernst branes from special geometry
• The Hot Attractor Mechanism: Decoupling Without Deep Throats