Hyperon bulk viscosity in the presence of antikaon condensate

被引：19

作者：

Chatterjee, Debarati ^{[1
,2
]}

Bandyopadhyay, Debades ^{[1
,2
]}

机构：

[1] Saha Inst Nucl Phys, Div Theory, Kolkata 700064, W Bengal, India

[2] Saha Inst Nucl Phys, Ctr Astroparticle Phys, Kolkata 700064, W Bengal, India

来源：

ASTROPHYSICAL JOURNAL | 2008年 / 680卷 / 01期

关键词：

dense matter; instabilities; stars : neutron; stars : oscillations;

D O I：

10.1086/587956

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the hyperon bulk viscosity due to the nonleptonic process n + p reversible arrow p + Lambda in K- condensed matter and its effect on the r-mode instability in neutron stars. We find that the hyperon bulk viscosity coefficient in the presence of antikaon condensate is suppressed compared with the case without the condensate. The suppressed hyperon bulk viscosity in the superconducting phase is still an efficient mechanism to damp the r-mode instability in neutron stars.

引用

页码：686 / 694

页数：9

共 63 条

[1] Bulk viscosity due to kaons in color-flavor-locked quark matter [J].