Static dilatonic black hole with nonlinear Maxwell and Yang–Mills fields of power-law type

Stetsko, M. M.

doi:10.1007/s10714-020-02777-w

Cited by 12 publications

(4 citation statements)

References 125 publications

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“…Another evident extension would be to analyze whether similar configurations can be obtained starting with a magnetic ansatz, as opposed the electric one. Additional future problems could also include the study of anisotropic configurations with conserved charges such as electrically or magnetically charged Lifshitz black holes, adding for example linear Maxwell fields [41] or non-linear electrodynamics [42][43][44][45]. Another idea would be to consider more general asymptotic geometries, for example hyperscaling violation metrics which are, in general, described by [46] ds…”

Section: Discussionmentioning

confidence: 99%

Lifshitz black holes in four-dimensional Critical Gravity

Bravo-Gaete,

Juarez-Aubry,

Velazquez-Rodriguez

2021

Preprint

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In this work, we study the existence of asymptotically Lifshitz black holes in Critical Gravity in four dimensions with a negative cosmological constant under two scenarios: First, including dilatonic fields as the matter source, where we find an asymptotically Lifshitz solution for a fixed value of the dynamical exponent z = 4. As a second case, we also added a non-minimally coupled scalar field Φ with a potential given by a mass term and a quartic term. Using this approach, we found a solution for z defined in the interval (1, 4), recovering the Schwarzchild-Anti-de Sitter case with planar base manifold in the isotropic limit. Moreover, when we analyzed the limiting case z = 4, we found that there exists an additional solution that can be interpreted as a stealth configuration in which the stealth field is overflying the z = 4 solution without the non-minimally coupled field Φ. Finally, we studied the non-trivial thermodynamics of these new anisotropic solutions and found that they all satisfy the First Law of Thermodynamics as well as the Smarr relation. We were also able to determine that the non-stealth configuration is thermodynamically preferred in this case. * mbravo-at-ucm.cl † mjuarez-at-astate.edu ‡ gvelazquez-at-astate.edu

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Section: Discussionmentioning

confidence: 99%

Lifshitz black holes in four-dimensional Critical Gravity

Bravo-Gaete,

Juarez-Aubry,

Velazquez-Rodriguez

2021

Preprint

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“…In addition, the Wald procedure [22,23] together with the method [24] allows us to compute the shear viscosity/ density entropy η/s ratio, wherein our situation depends on the coupling functions G 2 and G 4 , showing a new concrete example where the KSS bound (2) can be violated. Some natural extensions of this work would be for example to consider spherical or hyperbolical topologies for the event horizon, the inclusions of electromagnetic sources (see for example [34,[38][39][40][41] ), or even a recently extension denominated as Degenerate-Higher-Order-Scalar-Tensor (DHOST) theory, allowing us to add new degrees of freedom introducing a scalar field, avoiding Ostrogradsky instability due to its degeneracy property [42][43][44][45].…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Planar black holes configurations and shear viscosity in arbitrary dimensions with shift and reflection symmetric scalar-tensor theories

Bravo-Gaete,

Stetsko

2021

Preprint

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In higher dimensions, we explore planar hairy black hole configurations in a special subclass of the Horndeski theory, which posses shift symmetry and reflection symmetry, constructed by two coupling functions depending on the kinetic term. For this analysis, we derive a set of new solutions, given by the linear time dependence or the time-independence for the scalar field. Additionally, we calculate their thermodynamic parameters by using Wald formalism, satisfy the First Law of Thermodynamics as well as a Smarr relation. Together with the above, the Wald procedure allows to compute the shear viscosity, showing that for a suitable choice of the coupling functions the Kovtun-Son-Starinets bound is not fulfill.

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“…Some natural extensions of this work would be for example to consider the inclusion of matter sources such as linear Maxwell fields [36] to obtain electric and/or magnetic configurations, or the addition of other non-linear electrodynamics theories (see for example [37][38][39][40]).…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Towards the emergence of non-zero thermodynamical quantities for Lanczos-Lovelock black holes dressed with a scalar field

Bravo-Gaete,

Gómez,

Guajardo

et al. 2021

Preprint

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The present work aims to explore the model given by Lanczos-Lovelock gravity theories indexed by a fixed integer to require a unique anti-de Sitter vacuum, dressed by a scalar field non-minimal coupling. For this model, we add a special matter source characterized by a non-linear Maxwell field coupling with a function depending on the scalar field. Computing its thermodynamics parameters by using the Euclidean action, we obtain interesting and non zero thermodynamical quantities, unlike its original version, allowing analyzing thermodynamical stability. Together with the above, we found that these solutions satisfy the First Law of Thermodynamics as well as a Smarr relation. * mbravo-at-ucm.cl † cgomez-at-ucm.cl ‡ lguajardo-at-ucm.cl § sebastian.gomez-at-uautonoma.cl

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Static dilatonic black hole with nonlinear Maxwell and Yang–Mills fields of power-law type

Cited by 12 publications

References 125 publications

Lifshitz black holes in four-dimensional Critical Gravity

Lifshitz black holes in four-dimensional Critical Gravity

Planar black holes configurations and shear viscosity in arbitrary dimensions with shift and reflection symmetric scalar-tensor theories

Towards the emergence of non-zero thermodynamical quantities for Lanczos-Lovelock black holes dressed with a scalar field

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