An Ignored Assumption of $\Lambda$CDM Cosmology and An Old Question: Do We Live On The "Center" of The Universe?

TL;DR

This paper challenges a key assumption in $ ext{Lambda}$CDM cosmology regarding the synchronous movement of the cosmological constant with matter, proposing a new mechanism involving pressures from random galaxy motions to explain cosmic acceleration.

Contribution

It introduces a novel analytical solution to Einstein's equations considering pressures from random galaxy motions, offering an alternative explanation for cosmic acceleration.

Findings

Proposes a new mechanism involving galaxy motions for cosmic acceleration

Provides an analytical Einstein solution incorporating galaxy motion pressures

Questions the assumption of $ ext{Lambda}$CDM regarding vacuum energy behavior

Abstract

We point out that $\Lambda$CDM cosmology has an ignored assumption. That is, the $\Lambda$ component of the universe moves synchronously with ordinary matters on Hubble scales. If cosmological constant is vacuum energy, this assumption may be very difficult to be understood. We then propose a new mechanism which can explain the accelerating recession of super-novaes. That is, considering the pressures originating from the random moving (including Hubble recession) of galaxy clusters and galaxies. We provide an new analytical solution of Einstein equation which may describe a universe whose pressures originating from the random moving of galaxy clusters and galaxies are considered.