The evolution of white dwarfs with a varying gravitational constant

Understand

Within the theoretical framework of some modern unification theories the constants of nature are functions of cosmological time.

• White dwarfs offer the possibility of testing a possible variation of G and, thus, to place constraints to these theories.
• We present full white dwarf evolutionary calculations in the case that G decreases with time.
• White dwarf evolution is computed in a self-consistent way, including the most up-to-date physical inputs, non-gray model atmospheres and a detailed core chemical composition that results from the calculation of the full evolution of progenitor stars.