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gr-qc2026
A novel phenomenological parametrization of dynamical dark energy via matter-gravity coupling
Hrishikesh Chakrabarty, Daniele Malafarina
We develop a new parametrization for generic departures from the CDM model based on the Markov-Mukhanov action with non-minimal matter-gravity coupling. In this approach the cos…
gr-qc2026
Can UV meet IR in the Swiss cheese?
Madina Abilmazhinova, Diana Kulubayeva, Hrishikesh Chakrabarty +1
We consider the embedding of regular black holes in an expanding universe and study how the ultraviolet modifications to the Schwarzschild geometry that regularize the black hole s…