Astrophysical bounds on the coupling of light scalar particles with electrons and nucleons.

Details Astrophysical bounds on the coupling of light scalar particles with electrons and nucleons. Astrophysical bounds on the coupling of light scalar particles with electrons and nucleons.

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990svjnp..52..348b&link_type=abstract

Sov. J. Nucl. Phys., Vol. 52, No. 2, p. 348 - 349

Physics

Stellar Interiors: White Dwarfs, Stellar Interiors: Nucleosynthesis

Scientific paper

The rate of cooling of white dwarfs, which is known from observations, is used to obtain upper bounds on the coupling of light scalars with matter. For sufficiently large coupling constants the scalars are confined in the dwarf, but the thermal conduction in the inner regions of the sun increases unacceptably. The introduction of additional fermions, interacting strongly with the scalars, makes a narrow range of values λe,N ≡ 3x10-4 acceptable.

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