The authors build off-diagonal deformations of regular Schwarzschild black holes and introduce Perelman-type geometric flow thermodynamic variables for them.
Cosmology from Schwarzschild black hole revisited
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We study cosmological models based on the interior of the revisited Schwarzschild black hole recently reported in [Phys.~Rev.~D{\bf 109} (2024) 104032]. We find that these solutions describe a non-trivial Kantowski-Sachs universe, for which we provide an explicit analytical example with all the details and describe some general features of the singularity.
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Off-diagonal deformations of regular Schwarzschild black holes and general relativistic G. Perelman thermodynamics
The authors build off-diagonal deformations of regular Schwarzschild black holes and introduce Perelman-type geometric flow thermodynamic variables for them.