TL;DR
This paper discusses scalar-tensor theories with a varying gravitational constant G, exploring their astrophysical implications and presenting specific results for boson and white dwarf stars.
Contribution
It compares two methodological approaches to study astrophysical objects in varying-G theories and reports new findings for boson and white dwarf stars.
Findings
Results on boson star evolution in varying-G theories
Insights into white dwarf star properties with changing G
Comparison of methodological approaches
Abstract
Theories with varying gravitational constant have been studied since long time ago. Among them, the most promising candidates as alternatives of the standard General Relativity are known as scalar-tensor theories. They provide consistent descriptions of the observed universe and arise as the low energy limit of several pictures of unified interactions. Therefore, an increasing interest on the astrophysical consequences of such theories has been sparked over the last few years. In this essay we comment on two methodological approaches to study evolution of astrophysical objects within a varying- theory, and the particular results we have obtained for boson and white dwarf stars.
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