Zero average values of cosmological perturbations as an indispensable condition for the theory and simulations

The European Physical Journal C

Maxim Eingorn¹  Branislav Vlahovic¹  Maxim Brilenkov² 

[1] CREST and NASA Research Centers, North Carolina Central University, Fayetteville st. 1801, 27707, Durham, NC, USA;Department of Theoretical Physics and Astronomical Observatory, Odessa National University, Dvoryanskaya st. 2, 65082, Odessa, Ukraine;

关键词: Gravitational Potential;    Peculiar Velocity;    Cosmological Perturbation;    Infinite Volume;    Nonrelativistic Matter;   

DOI  :  10.1140/epjc/s10052-015-3598-z

来源: Springer

【 摘 要 】

We point out a weak side of the commonly used determination of scalar cosmological perturbations lying in the fact that their average values can be nonzero for some matter distributions. It is shown that introduction of the finite-range gravitational potential instead of the infinite-range one resolves this problem. The concrete illustrative density profile is investigated in detail in this connection.

【 授权许可】

CC BY