Excursion beyond the Standard Model Physics – Gravitational Waves and Beyond
Speaker: Arnab Chaudhuri
Abstract:
The standard model of particle physics, even though very successful, however is incomplete. It fails to explain the origin of the matter-antimatter asymmetry, neutrino masses and have any suitable candidates for dark matter. Within the framework of the standard model electroweak phase transition is crossover in nature. Hence a lot of beyond the standard model theories have been established in both particle physics and cosmology to overcome these shortcomings. The recent results from NANOGrav have also established the existence of secondary or stochastic gravitational waves. In this talk, I will go through some models with the main focus being the creation of these stochastic gravitational waves due to a first order phase transition.
This talk will be primarily based on JCAP 01 (2018) 032, Phys.Rev.D 106 (2022) 9, 095016 and arXiv: 2404.10288 .