Bounds on Spontaneous Collapse model of Quantum Mechanics from formation of CMBR and Standard Cosmology

TL;DR

This paper investigates how the Continuous Spontaneous Localization (CSL) model affects cosmological evolution, using the formation of the Cosmic Microwave Background Radiation (CMBR) to constrain the collapse rate parameter.

Contribution

It provides new bounds on the CSL collapse rate parameter by analyzing its impact on the thermal history of the universe and CMBR formation.

Findings

Constraints on the CSL collapse rate from CMBR data

Impact of CSL on early universe thermal evolution

Limits on CSL parameters consistent with standard cosmology

Abstract

Continuous Spontaneous Localization (CSL) model of Quantum Mechanics modifies Schr\"{o}dinger equation by adding non-linear stochastic terms due to which the total energy of a system increases with a constant rate which is proportional to the collapse rate $\lambda$. Thus applying CSL model to cosmological scenarios can change the thermal behaviour of the particles during evolution and we will put constraints on $\lambda$ by considering several cosmological scenarios.