Matter in Discrete Space-Times

PP Divakaran - arXiv preprint arXiv:2404.04548, 2024 - arxiv.org
The unitary representations of the Poincare group of a discrete space-time are constructed,
following the Wigner method in continuum relativity. They can be interpreted as elementary …

Formation and decay of oscillons after inflation in the presence of an external coupling, Part-I: Lattice simulations

M Shafi, EJ Copeland, R Mahbub, SS Mishra… - arXiv preprint arXiv …, 2024 - arxiv.org
We investigate the formation and decay of oscillons during the post-inflationary reheating
epoch from inflaton oscillations around asymptotically flat potentials $ V (\varphi) $ in the …

Inflationary Gravitational Waves as a probe of the unknown post-inflationary primordial Universe

AK Soman, SS Mishra, M Shafi, S Basak - arXiv preprint arXiv:2407.07956, 2024 - arxiv.org
One of the key predictions of the standard inflationary paradigm is the quantum mechanical
generation of the transverse and traceless tensor fluctuations due to the rapid accelerated …