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Phys Rev Lett. 2009 Nov 20;103(21):211102. Epub 2009 Nov 16.

Supersoft symmetry energy encountering non-Newtonian gravity in neutron stars.

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1
Department of Physics, South China University of Technology, Guangzhou 510641, P.R. China.

Abstract

Considering the non-Newtonian gravity proposed in grand unification theories, we show that the stability and observed global properties of neutron stars cannot rule out the supersoft nuclear symmetry energies at suprasaturation densities. The degree of possible violation of the inverse-square law of gravity in neutron stars is estimated using an equation of state of neutron-rich nuclear matter consistent with the available terrestrial laboratory data.

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