10 papers
Self-Gravitating Magnetic Monopoles and Dyons in String-Inspired Models: Structure and Stability
Nick E. Mavromatos, Sarben Sarkar, Dionysios P. Theodosopoulos
We present classical magnetic--monopole (MM) and dyon solutions induced by global monopoles in string-inspired gravitational models. Although several ingredients of the constructio…
The -Effect from a Multimode Squeezed Graviton State
Nick E. Mavromatos, Sarben Sarkar
The -effect in entangled neutral-meson systems provides a sensitive probe of CPT violation induced by quantum-gravitational environments. In open quantum systems, interactions…
Photon-Mediated Hybridization and Dissipative Transport in a Cavity-QED Ring-Acceptor Architecture
Stephon Alexander, Roger Andrews, Oliver Fox +1
We investigate excitation transfer in an engineered cavity QED transport architecture consisting of an N-site donor ring coupled coherently to a central acceptor and driven by a si…
How Much Can Gravitons Be Squeezed?
Panagiotis Dorlis, Nick E. Mavromatos, Sarben Sarkar +1
Quantum Gravity remains elusive, largely because its observable effects are suppressed by powers of the Planck scale. Direct detection of single gravitons is widely believed to be…
On the stability of Born-Infeld-regularised electroweak monopoles
N E Mavromatos, Sarben Sarkar
The Cho-Maison monopole provides a monopole solution of the electroweak field equations, but possesses an infinite classical energy due to the Maxwell form of the hypercharge secto…
The axion coupling accelerates the Universe through PT-symmetric phases
Leqian Chen, Nick E. Mavromatos, Sarben Sarkar
The conjecture by two of the authors (N.E.M. and S.S.) that a \cPT-symmetric phase plays a role in understanding singular renormalisation group (RG) flows for a Chern-Simons (CS) g…