SOME PROPERTIES OF THE DYNAMICS OF COLLAPSE IN MASSIVE AND MASSLESS RELATIVISTIC THEORIES OF GRAVITY

被引:0
作者
Antipin, K. V. [1 ]
Dubikovsky, A. I. [1 ]
Silaev, P. K. [1 ,2 ]
机构
[1] Moscow MV Lomonosov State Univ, Bogoliubov Inst Theoret Problems Microworld, Moscow, Russia
[2] Moscow MV Lomonosov State Univ, Dept Phys, Moscow, Russia
关键词
gravity theory; general relativity; relativistic theory of gravity; collapse; graviton mass; EXTERNAL GRAVITATIONAL-FIELD; SPHERICALLY SYMMETRIC BODY; EVOLUTION; UNIVERSE;
D O I
10.1134/S0040577916040097
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We investigate the dynamics of collapse in massive and massless relativistic theories of gravity for different equations of state for matter numerically and analytically. This allows clarifying the character of the collapse dynamics in the massive relativistic theory of gravity; in particular, we establish the graviton-mass dependence of the time of reaching the turning point (i.e., the point of transition from contraction to expansion). For the massless relativistic theory of gravity, we clarify the relation between the known general relativity solution for cold dust and the corresponding solution in the relativistic theory of gravity. We show that the harmonic time is singular, including the case of a smooth distribution of matter corresponding to a compact object with a strongly diffused boundary, which means that the Oppenheimer-Snyder solution cannot be fully embedded into the Minkowski space. We in addition investigate the effect of a nonzero pressure on the collapse dynamics.
引用
收藏
页码:548 / 558
页数:11
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