Probing unification scenarios with neutron stars

Details Probing unification scenarios with neutron stars Probing unification scenarios with neutron stars

2012-03-02

arxiv.org/abs/1203.0399v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

5 pages, 4 figs

Scientific paper

We discuss the sensitivity of the neutron star equation of state to combined variations of the gravitational, strong and electroweak coupling constants in the context of unification scenarios. We find that current knowledge of the neutron star mass-radius relationship and heavy ion collisions observable measurements constrain the equation of state as described by relativistic field models of interacting matter. In particular, there are unification scenarios that would be incompatible with the existence of these objects. This provides an additional independent constraint on the allowed range of variation of fundamental dimensionless constants.

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