Influence Of Collapsing Matter On The Enveloping Expanding Universe

TL;DR

This paper explores how collapsing matter at the universe's center influences its expansion, revealing fluctuating acceleration and deceleration phases driven by a special generated pressure.

Contribution

It introduces a model where collapsing matter affects the universe's expansion dynamics through a specific pressure mechanism, extending Weinberg's framework.

Findings

Universe exhibits alternating acceleration and deceleration phases.

Generated pressure from collapsing matter influences the Hubble parameter.

Model predicts fluctuating deceleration parameter over time.

Abstract

Using a collapsing matter model at the center of an expanding universe as described by Weinberg we assume a special type of generated pressure. This pressure transmits into the surrounding expanding universe. Under certain restriction the ensuing hubble parameter is positive. The deacceleration parameter fluctuates with time, indicating that the universe accelerates for certain time and decelerates for other time intervals.