# A Note on Gravitational Particle Production in Supergravity

## TL;DR

This paper examines how gravitational particle production rates for scalar fields in supergravity can be suppressed or enhanced depending on the Kähler potential and inflaton sector choices, impacting early universe cosmology.

## Contribution

It highlights the conditions under which gravitational particle production is suppressed or not in supergravity models with different Kähler potentials.

## Key findings

- Suppression of particle production in minimal Kähler supergravity
- Enhanced production possible with non-minimal Kähler potential
- Implications for early universe cosmology and model building

## Abstract

It is pointed out that the gravitational particle production rate of a scalar component of a chiral superfield in supergravity with minimal Kahler potential can be significantly suppressed compared with a minimal scalar field in non-supersymmetric Einstein gravity. This suppression is avoided for some choice of the inflaton sector and also for non-minimal Kahler potential of the chiral superfield.