On Topological Defects and Cosmological Constant

TL;DR

This paper proposes a theoretical framework linking topological defects, specifically monopoles from early universe phase transitions, to the origin of the cosmological constant responsible for the universe's accelerated expansion.

Contribution

It introduces a novel prescription connecting topological defects with the cosmological constant, offering a potential explanation rooted in early universe phase transitions.

Findings

Topological defects may influence the value of the cosmological constant.

A new theoretical link between monopoles and vacuum energy is proposed.

The approach provides a possible explanation for the universe's accelerated expansion.

Abstract

Einstein introduced Cosmological Constant in his field equations in an ad hoc manner. Cosmological constant plays the role of vacuum energy of the universe which is responsible for the accelerating expansion of the universe. To give theoretical support it remains an elusive goal to modern physicists. We provide a prescription to obtain cosmological constant from the phase transitions of the early universe when topological defects, namely monopole might have existed.