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arXiv · 1902.08766

Constraining quark-hadron interface tension in the multi-messenger era

Cheng-Jun Xia·Toshiki Maruyama·Nobutoshi Yasutake·Toshitaka Tatsumi
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Abstract

We study the interface effects of quark-hadron mixed phase in compact stars. The properties of nuclear matter are obtained based on the relativistic-mean-field model. For the quark phase, we adopt perturbation model with running quark masses and coupling constant. At certain choices of parameter sets, it is found that varying the quark-hadron interface tension will have sizable effects on the radii ($\Delta R \approx 600$ m) and tidal deformabilities ($\Delta \Lambda/\Lambda \approx 50\%$) of hybrid stars. These provide possibilities for us to constrain the quark-hadron interface tension with future gravitational wave observations as well as the ongoing NICER mission.

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Cheng-Jun Xia, Toshiki Maruyama, Nobutoshi Yasutake, Toshitaka Tatsumi. 2019-02-23. Constraining quark-hadron interface tension in the multi-messenger era. https://doi.org/10.1103/physrevd.99.103017

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