A class of homogeneous scalar-tensor cosmologies with a radiation fluid
Stoytcho S. Yazadjiev (Sofia University)
TL;DR
This paper introduces a new class of exact homogeneous scalar-tensor cosmological solutions with radiation fluid, including nonsingular models, expanding the understanding of possible early universe behaviors in these theories.
Contribution
It provides explicit Bianchi type VI_h solutions for all scalar-tensor theories, including nonsingular models, which were not previously known.
Findings
Derived exact homogeneous solutions with radiation fluid
Presented explicit nonsingular scalar-tensor cosmologies
Expanded the class of known solutions in scalar-tensor theories
Abstract
We present a new class of exact homogeneous cosmological solutions with a radiation fluid for all scalar-tensor theories. The solutions belong to Bianchi type cosmologies. Explicit examples of nonsingular homogeneous scalar-tensor cosmologies are also given.
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