60 citations · 370 across the 25 of their papers we have counts for
45 papers
Axions, Black Holes and the Detection of Gravitons: from Astrophysics to Cosmology
Nick E. Mavromatos, Panagiotis Dorlis, Sarben Sarkar +1
We review a novel scenario for the emergence of spin-polarisation entangled squeezed graviton states from superradiant axionic clouds in the neighborhood of astrophysical rotating…
Squeezed gravitons from superradiant axion fields around rotating black holes
Panagiotis Dorlis, Nick E. Mavromatos, Sarben Sarkar +1
We propose, in (3+1)-dimensional spacetimes, a novel astrophysical source of squeezed graviton states, due to superradiant axionic clouds surrounding rotating (Kerr-type) black hol…
Superradiant Axionic Black-Hole Clouds as Seeds for Graviton Squeezing
Panagiotis Dorlis, Nick E. Mavromatos, Sarben Sarkar +1
It is shown that both, standard general relativity (GR) and Chern-Simons (CS) gravity, the latter containing chiral gravitational anomaly terms, seed the production of pairs of ent…
Chern-Simons gravity and PT Symmetry
Nick E. Mavromatos, Sarben Sarkar
This paper considers the possibility that, starting from a relativistic Hermitian quantum field theory in the ultraviolet (UV) regime, and applying a non-perturbative renormalizati…
Axion effective potentials induced by heavy sterile fermions
Nick E. Mavromatos, Sarben sarkar
A model of (3+1)-dimensional leptogenesis, proposed previously by the authors, requires a CPT Violating (CPTV) background of the Kalb-Ramond (KR) axion field. The KR axion is a pse…
New classes of solutions for Euclidean scalar field theories
Carl M. Bender, Sarben Sarkar
This paper presents new classes of exact radial solutions to the nonlinear ordinary differential equation that arises as a saddle-point condition for a Euclidean scalar field theor…