Physical interpretation of Newman-Janis rotating systems. II. General systems
Physical interpretation of Newman-Janis rotating systems. II. General systems
复制标题
纽曼-贾尼斯旋转系统的物理解释。
DOI:
10.1103/physrevd.104.124067
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发表时间:
2021
影响因子:
5
通讯作者:
Gondolo, Paolo
中科院分区:
文献类型:
--
作者:
Beltracchi, Philip;Gondolo, Paolo
Drake and Szekeres have extended the Newman-Janis algorithm to produce stationary axisymmetric spacetimes from general static spherically symmetric solutions of the Einstein equations. The algorithm mathematically generates an energy-momentum tensor for the rotating solution, but the rotating and nonrotating system may or may not represent the same physical system, in the sense of both being a perfect fluid, or an electromagnetic field, or a-term, and so on. In Part I [P. Beltracchi and P. Gondolo, preceding paper, Phys. Rev. D 104, 124066 (2021)PRVDAQ2470-001010.1103/PhysRevD.104.124066], we compared the structure of the eigenvalues and eigenvectors of the rotating and nonrotating energy-momentum tensors (their Segre types) and looked for the existence of equations of state relating the rotating energy density and principal pressures for Kerr-Schild systems. Here we extend our analysis to general static spherically symmetric systems obtained according to the Drake-Szekeres generalization of the Newman-Janis algorithm. We find that these rotating systems can have almost all Segre types except [31] and [(31)]. Moreover, the Segre type of the spacetime can change severely in passing from the nonrotating to the rotating configurations, for example tofrom seed systems which were initially [(111,1)]. We also find conditions dictating how many equations of state may exist in a Drake-Szekeres system.
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DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
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通讯作者:
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影响因子:
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通讯作者:
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DOI:
--
发表时间:
1975
期刊:
影响因子:
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作者:
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