Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 2, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP02(2022)057
Keywords
Classical Theories of Gravity; Supergravity Models; Black Holes; Black Holes in String Theory
Categories
Funding
- Beca ANID de Magister [22201618]
- FONDECYT [1181047, 1200022]
- Proyecto de Cooperacion Internacional [2019/13231-7 FAPESP/ANID]
- Chilean Government through the Centers of Excellence Base Financing Program of ANID
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In this paper, we revisit the problem of finding BPS solutions in N = 4 SU (2) x SU (2) gauged supergravity. We report a new supersymmetric solution in the Abelian sector and a new solution whose supersymmetric nature was overlooked in the previous literature. Moving to the non-Abelian sector, we construct electric-meronic and double-meron solutions, which lead to singular 1/4 BPS configurations. We also modify the self-interaction of the scalar and construct exact black holes with interesting causal structures and asymptotic behavior.
We start by revisiting the problem of finding BPS solutions in N = 4 SU (2) x SU (2) gauged supergravity. We report on a new supersymmetric solution in the Abelian sector of the theory, which describes a soliton that is regular everywhere. The solution is 1/4 BPS and can be obtained from a double analytic continuation of a planar solution found by Klemm in hep-th/9810090. Also in the Abelian sector, but now for a spherically symmetric ansatz we find a new solution whose supersymmetric nature was overlooked in the previous literature. Then, we move to the non-Abelian sector of the theory by considering the meron ansatz for SU (2). We construct electric-meronic and double-meron solutions and show that the latter also leads to 1/4 BPS configurations that are singular and acquire an extra conformal Killing vector. We then move beyond the supergravity embedding of this theory by modifying the self-interaction of the scalar, but still within the same meron ansatz for a single gauge field, which is dilatonically coupled with the scalar. We construct exact black holes for two families of self-interactions that admit topologically Lifshitz black holes, as well as other black holes with interesting causal structures and asymptotic behavior. We analyze some thermal properties of these spacetimes.
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