# Regular Bouncing Solutions, Energy Conditions and the Brans-Dicke Theory

## TL;DR

This paper demonstrates a bouncing cosmological solution within Brans-Dicke theory that satisfies energy conditions and avoids singularities without exotic matter or ghosts.

## Contribution

It presents a novel bouncing solution in Brans-Dicke theory with normal matter, challenging the usual requirement of energy condition violations for such models.

## Key findings

- Bouncing solutions can exist in Brans-Dicke theory with standard matter.
- The model avoids ghosts and satisfies energy conditions.
- No exotic matter fields are necessary for a bounce.

## Abstract

In general, to avoid a singularity in cosmological models involves the introduction of exotic kind of matter fields, for example, a scalar field with negative energy density. In order to have a bouncing solution in classical General Relativity, violation of the energy conditions is required. In this work, we discuss a case of the bouncing solution in the Brans-Dicke theory with radiative fluid that obeys the energy conditions, and with no ghosts.