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Crystallized white dwarf stars in scalar-tensor gravity
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We study the effects of massive scalar-tensor theories on the internal properties, crystallization, and cooling process of white dwarf stars that might potentially solve observational tensions. We show that these modified gravity theories alter the inner structure of the star leading to sub-Chandrasekhar mass white dwarfs. This further results in a modification of Debye temperature, ion and electron specific heats. Finally, we find that the cooling process is significantly shortened in scalar-tensor theories leading to reduced cooling ages.
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Cited by 3 Pith papers
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White dwarfs in minimal dilatonic gravity
White dwarfs in minimal dilatonic gravity are sub-Chandrasekhar for all scalar Compton lengths, with maximum mass dropping from 1.425 to 1.09 solar masses at λΦ = 500 km.
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Symmetron and dilaton fifth forces shrink white dwarf masses, radii, and luminosities, with no screened white dwarf exceeding the Newtonian mass-radius relation.
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Temperature effects on white dwarfs in modified gravity
Finite temperature makes theoretical white dwarf models in scalar-tensor gravity larger at the same mass, creating a degeneracy with modified gravity signatures.
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