Anisotropic hydrodynamics, bulk viscosities, and r-modes of strange quark stars with strong magnetic fields
Huang, XG; Huang M(黄梅); Huang, M; Rischke, DH; Sedrakian, A
刊名PHYSICAL REVIEW D
2010
卷号81期号:4页码:45015
学科分类Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.81.045015
通讯作者[Huang, Xu-Guang ; Rischke, Dirk H.] Frankfurt Inst Adv Studies, D-60438 Frankfurt, Germany ; [Huang, Xu-Guang ; Rischke, Dirk H. ; Sedrakian, Armen] Goethe Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany ; [Huang, Xu-Guang ; Huang, Mei] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China ; [Huang, Xu-Guang] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
文章类型Article
英文摘要In strong magnetic fields the transport coefficients of strange quark matter become anisotropic. We determine the general form of the complete set of transport coefficients in the presence of a strong magnetic field. By using a local linear response method, we calculate explicitly the bulk viscosities zeta(perpendicular to) and zeta(parallel to) transverse and parallel to the B field, respectively, which arise due to the nonleptonic weak processes u + s <-> u + d. We find that for magnetic fields B < 10(17) G, the dependence of zeta(perpendicular to) and zeta(parallel to) on the field is weak, and they can be approximated by the bulk viscosity for the zero magnetic field. For fields B > 10(18) G, the dependence of both zeta(perpendicular to) and zeta(parallel to) on the field is strong, and they exhibit de Haas-van Alphentype oscillations. With increasing magnetic field, the amplitude of these oscillations increases, which eventually leads to negative zeta(perpendicular to) in some regions of parameter space. We show that the change of sign of zeta(perpendicular to) signals a hydrodynamic instability. As an application, we discuss the effects of the new bulk viscosities on the r-mode instability in rotating strange quark stars. We find that the instability region in strange quark stars is affected when the magnetic fields exceed the value B = 10(17) G. For fields which are larger by an order of magnitude, the instability region is significantly enlarged, making magnetized strange stars more susceptible to r-mode instability than their unmagnetized counterparts.
类目[WOS]Astronomy & Astrophysics ; Physics, Particles & Fields
研究领域[WOS]Astronomy & Astrophysics ; Physics
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语种英语
WOS记录号WOS:000275898500106
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被引频次:54[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240622
专题中国科学院高能物理研究所_理论物理室_期刊论文
中国科学院高能物理研究所_理论物理室
作者单位中国科学院高能物理研究所
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Huang, XG,Huang M,Huang, M,et al. Anisotropic hydrodynamics, bulk viscosities, and r-modes of strange quark stars with strong magnetic fields[J]. PHYSICAL REVIEW D,2010,81(4):45015.
APA Huang, XG,黄梅,Huang, M,Rischke, DH,&Sedrakian, A.(2010).Anisotropic hydrodynamics, bulk viscosities, and r-modes of strange quark stars with strong magnetic fields.PHYSICAL REVIEW D,81(4),45015.
MLA Huang, XG,et al."Anisotropic hydrodynamics, bulk viscosities, and r-modes of strange quark stars with strong magnetic fields".PHYSICAL REVIEW D 81.4(2010):45015.
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