Journal
CLASSICAL AND QUANTUM GRAVITY
Volume 36, Issue 9, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6382/ab11e6
Keywords
minimal geometric deformation; gravitational decoupling; three-dimensonal gravity
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In this work we implement the minimal geometric deformation method to obtain the isotropic sector and the decoupler matter content of any anisotropic solution of the Einstein field equations with cosmological constant in 2 + 1 dimensional space-times. We obtain that the solutions of both sectors can be expressed analytically in terms of the metric functions of the original anisotropic solutions instead of formal integral as in its 3 + 1 counterpart. As a particular example we study a regular black hole solution and we show that, depending on the sign of the cosmological constant, the solutions correspond to regular black holes violating the null energy condition or to a non-regular black hole without exotic hair. The exotic/non-exotic and the regular/non-regular black hole like-dualities are discussed.
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