Gravitational collapse in pure Gauss-Bonnet gravity
Dialektopoulos K.F. Malafarina D. Dadhich N.
15 August 2023American Physical Society
Physical Review D
2023#108Issue 4
We study the process of gravitational collapse in pure Gauss-Bonnet gravity. In the homogeneous dust collapse, we show that the D=7 pure Gauss-Bonnet theory has gravitational dynamics indistinguishable from Einsteins theory in D=4, meaning that collapsing particles feel the same potential as in the classical four-dimensional general relativistic case. In D<7 pure Gauss-Bonnet gravity becomes weaker, while in D>7 it becomes stronger, with respect to general relativity. In the inhomogeneous dust collapse we find the mass modes in the expansion of the energy density in any dimensions that lead to either naked singularities or black holes as final states of collapse.
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Department of Mathematics and Computer Science, Transilvania University of Brasov, Brasov, 500091, Romania
Romania Laboratory of Physics, Faculty of Engineering, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece
Department of Physics, Nazarbayev University, 53 Kabanbay Batyr Avenue, Astana, 010000, Kazakhstan
Inter-University Centre for Astronomy & Astrophysics, Post Bag 4, Pune, 411 007, India
Department of Mathematics and Computer Science
Romania Laboratory of Physics
Department of Physics
Inter-University Centre for Astronomy & Astrophysics
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