from 29 November 2022 to 2 December 2022
Hotel Intourist Kolomenskoye 4*
Europe/Moscow timezone
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Near-inflection point inflation and production of dark matter during reheating.

2 Dec 2022, 19:20
15m
Moskvorechye 1 (Hotel Intourist Kolomenskoye 4*)

Moskvorechye 1

Hotel Intourist Kolomenskoye 4*

Oral talk Gravitation and cosmology Gravitation and Cosmology

Speaker

Shiladitya Porey (Department of Physics, Novosibirsk State University, Pirogova 2, 630090 Novosibirsk, Russia)

Description

We study slow roll single field inflationary scenario and the production of non-thermal fermionic dark matter, together with standard model Higgs, during reheating. For the inflationary scenario, we have considered two models of polynomial potential — one is symmetric about the origin and the other one is not. We fix the coefficients of the potential from the current CMB data from PLANCK/BICEP. Next, we explore the allowed parameter space of the coupling (y_χ) with inflaton and mass (m_χ) of dark matter particles (χ) produced during reheating and satisfying CMB and several other cosmological constraints.

Primary author

Shiladitya Porey (Department of Physics, Novosibirsk State University, Pirogova 2, 630090 Novosibirsk, Russia)

Co-authors

Dr. Anish Ghoshal (Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, ul. Pasteura 5, 02-093 Warsaw, Poland) Prof. Gaetano Lambiase (Dipartimento di Fisica ”E.R. Caianiello”, Universita’ di Salerno, I-84084 Fisciano (Sa), Italy; INFN - Gruppo Collegato di Salerno, I-84084 Fisciano (Sa), Italy.) Prof. Supratik Pal (Physics and Applied Mathematics Unit, Indian Statistical Institute, Kolkata-700108, India; Technology Innovation Hub on Data Science, Big Data Analytics and Data Curation, Indian Statistical Institute, Kolkata-700108, India.) Mr. Arnab Paul (School of Physical Sciences, Indian Association for the Cultivation of Science, Kolkata-700032, India)

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