PT4 - Variation of the fundamental constants, violation of the fundamental symmetries and dark matter |
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Speaker |
Suyama, Teruaki |
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Coauthors |
Morisaki, Soichiro |
| Talk Title |
Spontaneous Scalarization And Heavy Neutron Stars |
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Abstract |
I will present my recent investigation about the internal structure and the mass-radius relation of neutron stars in a class of scalar-tensor theories in which a massive scalar field undergoes spontaneous scalarization inside neutron stars. We focus on the case where the Compton wavelength is shorter than the size of the neutron stars, which has not been investigated in the literature. It is shown that not only the weakening of gravity by spontaneous scalarization but also the scalar force affect the internal structure significantly in the massive case. As a result, the maximum mass of neutron stars is larger for certain parameter sets than that in general relativity and reaches 2 solar mass even if the effect of strange hadrons is taken into account. |
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Talk view |
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