7 papers
Cavity-Induced Suppression of Entanglement and Enhancement of Quantum Discord
Shagun Kaushal, Harkirat Singh Sahota
We study correlations between two Unruh-DeWitt detectors coupled to a scalar field in a cylindrical cavity. Boundary conditions strongly modify the detector-correlation dynamics re…
Cavity-controlled Inhibition of Decoherence in Accelerated Quantum Detectors
Harkirat Singh Sahota, Shagun Kaushal, Kinjalk Lochan
Vacuum fluctuations of quantum fields provide an unavoidable environment for any quantum system coupled to it. We study the interplay between boundary conditions and acceleration i…
Backreaction inclusive Schwinger effect in flat and de Sitter spacetimes via a self consistent Maxwell Schrodinger semiclassical dynamics
Shagun Kaushal, Suprit Singh
We employ a self consistent framework to study the backreaction effects of particle creation in the coupled semiclassical dynamics of a quantum complex scalar field and a classical…
Charged Black Hole with String Cloud Deformation: Entanglement and Chaos
Shagun Kaushal, Arpit Maurya, Sanjay Pant +1
We perform a holographic analysis of several quantum information theoretic observables entanglement entropy (EE), mutual information (MI), entanglement wedge cross section (EWCS),…
Entanglement generation between Unruh-DeWitt detectors in the de Sitter spacetime-analysis with complex scalar fields
Shagun Kaushal, Sourav Bhattacharya
We investigate the entanglement generation or harvesting between two identical, comoving Unruh-DeWitt detectors in the cosmological de Sitter spacetime. The detectors are assumed t…
Strong gravitational lensing of a five-dimensional charged, equally rotating black hole with a cosmological constant
Md Sabir Ali, Shagun Kaushal, Yu-Xiao Liu
We study the lensing phenomena of the strong gravity regime of five-dimensional charged, equally rotating black holes with a cosmological constant, familiarly known as the Cveti\v…