Motion of test particles in quasi anti-de Sitter regular black holes
Corona D. Giambò R. Luongo O.
15 September 2024World Scientific
International Journal of Geometric Methods in Modern Physics
2024#21Issue 10
In this paper, we explore the characteristics of two novel regular spacetimes that exhibit a nonzero vacuum energy term, under the form of a (quasi) anti-de Sitter phase. Specifically, the first metric is spherical, while the second, derived by applying the generalized Newman-Janis algorithm to the first, is axisymmetric. We show that the equations of state of the effective fluids associated with the two metrics asymptotically tend to negative values, resembling quintessence. In addition, we study test particle motions, illustrating the main discrepancies among our models and more conventional metrics exhibiting non-vanishing anti-de Sitter phase.
anti-de Sitter spacetime , geodesics , quintessence , Regular black holes
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School of Science and Technology, University of Camerino, Via Madonna delle Carceri, Camerino, 62032, Italy
Istituto Nazionale di Fisica Nucleare, INFN, Sezione di Perugia, Perugia, 06123, Italy
IAPS, INAF-Tor Vergata, Roma, 00133, Italy
SUNY Polytechnic Institute, Utica, 13502, NY, United States
INAF-Osservatorio Astronomico di Brera, Milano 20121, Italy, Italy
Al-Farabi University, Al-Farabi, Almaty 71, 050040, Kazakhstan
School of Science and Technology
Istituto Nazionale di Fisica Nucleare
IAPS
SUNY Polytechnic Institute
INAF-Osservatorio Astronomico di Brera
Al-Farabi University
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