Horizons in Bianchi universes

被引：0
|
作者：
de Ritis, R
Marino, AA
Martino, OAP
机构：
[1] Univ Naples, Dipartimento Sci Fisiche, I-80126 Naples, Italy
[2] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy
[3] Osservatorio Astron Capodimonte, I-80131 Naples, Italy
[4] Int Inst Adv Sci Studies ER Caianiello, I-80019 Vietri Sul Mare, SA, Italy
来源：
NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA B-GENERAL PHYSICS RELATIVITY ASTRONOMY AND MATHEMATICAL PHYSICS AND METHODS | 2001年 / 116卷 / 02期
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D O I：
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中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
There are two ways to introduce horizons in anisotropic spatially homogeneous universes: in the first one the anisotropy appears directly in the definitions, whereas in the second way a "mean horizon" is defined, with a consequent loss of information on the direction. In this work we give the expression of horizons in all nine Bianchi types, using the Misner parametrization of metric. We examine, also, some examples regarding the Bianchi type I; in each case the achieved expressions are compared with the correspondent mean horizons.
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页码：221 / 233
页数：13
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