Bardeen black holes in the regularized 4D Einstein–Gauss–Bonnet gravity

Kumar, Arun; Walia, Rahul Kumar; Ghosh, Sushant G.

Bardeen black holes in the regularized 4D Einstein–Gauss–Bonnet gravity

dc.contributor.author	Kumar, Arun
dc.contributor.author	Walia, Rahul Kumar
dc.contributor.author	Ghosh, Sushant G.
dc.coverage	Basel, Switzerland
dc.coverage.conference	issn
dc.date.accessioned	2026-03-23T07:12:39Z
dc.date.available	2026-03-23T07:12:39Z
dc.date.issued	2022
dc.departmentName	Mathematical Sciences
dc.description.abstract	We obtain exact Bardeen black holes to the regularized 4D Einstein–Gauss–Bonnet (EGB) gravity minimally coupled with the nonlinear electrodynamics (NED). In turn, we analyze the horizon structure to determine the effect of GB parameter on the minimum cutoff values of mass, M0, and magnetic monopole charge, g0, for the existence of a black hole horizon. We obtain an exact expression for thermodynamic quantities, namely, Hawking temperature T+, entropy S+, Helmholtz free energy F+, and specific heat C+ associated with the black hole horizon, and they show significant deviations from the 4D EGB case owing to NED. Interestingly, there exists a critical value of horizon radius, rc+, corresponding to the local maximum of Hawking temperature, at which heat capacity diverges, confirming the second-order phase transition. A discussion on the black holes of alternate regularized 4D EGB gravity belonging to the scalar-tensor theory is appended.
dc.faculty	Faculty of Science, Agriculture and Engineering
dc.identifier.citation	Kumar, A., Walia, R.K. and Ghosh, S.G. 2022. Bardeen black holes in the regularized 4 D Einstein–Gauss–Bonnet gravity. Universe, 8(4), pp.1-14.
dc.identifier.issn	2218-1997 (online)
dc.identifier.other	https://doi.org/10.3390/universe8040232
dc.identifier.uri	http://hdl.handle.net/10530/58991
dc.inproceedings	issn
dc.issuenumber	8 / 4
dc.keynote	issn
dc.language.iso	English
dc.pages	1 - 14
dc.peerreviewed	Yes
dc.publisher	MDPI
dc.subject	Regular black hole
dc.subject	Nonlinear electrodynamics
dc.subject	Thermodynamics
dc.title	Bardeen black holes in the regularized 4D Einstein–Gauss–Bonnet gravity
dc.title.journal	Universe
dc.type	Journal Article
dspace.entity.type	Publication
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