# Cosmological Constraints on Chiral Tensor Particles

## TL;DR

This paper explores how chiral tensor particles influence cosmological evolution and derives constraints on their interaction strength based on current cosmological data and bounds on relativistic degrees of freedom.

## Contribution

It introduces an extended cosmological model with chiral tensor particles and provides new constraints on their interactions from cosmological observations.

## Key findings

- Constraints on tensor particle interactions derived from cosmological data
- Bounds on relativistic degrees of freedom related to tensor particles
- Implications for right-handed neutrino scenarios

## Abstract

We discuss an extended model with chiral tensor particles in the Universe. Their direct influence on the Universe dynamics and their characteristic interactions in the hot Universe plasma, considered in previous publications, are briefly reviewed. A short discussion on the contemporary cosmological bounds on effective number of the relativistic degrees of freedom is provided. Cosmological constraints on the tensor particles interactions strength are obtained, corresponding to different cosmological bounds on the relativistic degrees of freedom and for different assumptions about right handed neutrinos.