4 papers
Tidal deformation of black holes in Lovelock gravity
Chiranjeeb Singha, Sumanta Chakraborty
It is well established that black holes in four-dimensional, vacuum, general relativity exhibit vanishing static tidal Love numbers, indicating no multipolar response to the extern…
Dynamical Love numbers of black holes: Theory and gravitational waveforms
Sumanta Chakraborty, Valerio De Luca, Leonardo Gualtieri +1
In General Relativity, the static tidal Love numbers of black holes vanish identically. Whether this remains true for time-dependent tidal fields -- i.e., in the case of dynamical…
One Membrane to Love them all: Tidal deformations of compact objects from the membrane paradigm
Michela Silvestrini, Elisa Maggio, Sumanta Chakraborty +1
The tidal deformability is a key observable to test the nature of compact objects in a binary coalescence. Within vacuum General Relativity, the tidal Love numbers of a four-dimens…
Manifestation of quantum entanglement between harmonic oscillators in de Sitter
Sumanta Chakraborty, Anupam Mazumdar, Ritapriya Pradhan
Two harmonic oscillators interacting through the exchange of a quantum field leads to non-zero entanglement between the two, which is absent for classical interaction. In this work…