Hajime Sotani, Toshiki Maruyama, Toshitaka Tatsumi
We calculate the torsional shear oscillations in the hadron-quark mixed phase of neutron stars whose structure depends strongly on the surface tension of the hadron-quark interface. It is shown that such frequencies become around ten times as large as those in the crust region, and those depend strongly on the surface tension. Additionally, we find that, with the fixed stellar mass, the frequencies of fundamental torsional oscillations in the hadron-quark mixed phase are almost proportional to the surface tension. So, with the help of the observation of stellar mass, one might be able to obtain the value of surface tension via the observation of stellar oscillations.
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http://arxiv.org/abs/1207.4055
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