出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We discuss bulk viscosity due to non-leptonic processes involving hyperons and Bose-Einstein
condensate of negatively charged kaons in neutron stars. It is noted that the hyperon bulk viscosity
coefficient is a few order of magnitude larger than that of the case with the condensate. Further it
is found that the hyperon bulk viscosity is suppressed in a superconducting phase. The hyperon
bulk viscosity efficiently damps the r-mode instability in neutron stars irrespective of whether a
superconducting phase is present or not in neutron star interior.
