Dark Matter Production from Inflation under Chiral Symmetry

DOI

10.2991/assehr.k.220504.228How to use a DOI?

Keywords

Inflation; Cosmological Constant; Chiral Symmetry; Dark Matter

Abstract

Many conceptual problems with the standard Big Bang model led us to the inflationary cosmology. The standard model is a broadly accepted theory in particle physics, in which chiral symmetry is a significantly useful property. Though a cosmological constant is just a constant, a time-varying cosmological constant is necessary for some modified theories. The cosmological constant can be coupled to the fermions through the chiral anomaly, and the time dependence of the cosmological constant is transferred to the rate of change of the number density of left-handed and right-handed fermions. During inflation, the cosmological constant was much larger than the present, so fermions were produced in large numbers, and after calculation, these fermions could just provide all the dark matter in the universe today.

Copyright

© 2022 The Authors. Published by Atlantis Press SARL.

Open Access

This is an open access article distributed under the CC BY-NC 4.0 license.

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TY  - CONF
AU  - Zexi Liu
PY  - 2022
DA  - 2022/06/01
TI  - Dark Matter Production from Inflation under Chiral Symmetry
BT  - Proceedings of the 2022 8th International Conference on Humanities and Social Science Research (ICHSSR 2022)
PB  - Atlantis Press
SP  - 1258
EP  - 1263
SN  - 2352-5398
UR  - https://doi.org/10.2991/assehr.k.220504.228
DO  - 10.2991/assehr.k.220504.228
ID  - Liu2022
ER  -