7 papers
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…
How to obtain slow roll inflation driven by non-linear electrodynamics
Daniele Malafarina, Hrishikesh Chakrabarty, Ilia Musco
We establish for the first time the conditions that must be imposed on the action for a magnetic universe in a theory of non-linear electrodynamics in order to have an asymptotical…
A unified model of dark energy and inflation from the Markov-Mukhanov action
Hrishikesh Chakrabarty, Daniele Malafarina
We propose a unified model of dark energy and inflation through the Markov-Mukhanov modification of the Einstein-Hilbert action, where the matter sector is coupled to gravity via a…
Observational properties of regular black holes in Asymptotic Safety
Abdybek Urmanov, Hrishikesh Chakrabarty, Daniele Malafarina
We consider the observational properties of a spherically symmetric, static regular black hole within the framework of asymptotic safety (AS) as proposed by Bonanno et al. The metr…
Intermediate mass ratio inspirals in dark matter halos
Darkhan Shadykul, Hrishikesh Chakrabarty, Daniele Malafarina
We study eccentric equatorial orbits of a stellar-mass black hole around an intermediate-mass slowly rotating Kerr black hole in the presence of gravitational radiation and a dark…
An emergent cosmological model from running Newton constant
Aknur Zholdasbek, Hrishikesh Chakrabarty, Daniele Malafarina +1
We propose an emergent cosmological model rooted in the Asymptotically Safe antiscreening behavior of the Newton constant at Planckian energies. Distinguishing itself from prior ap…