Gravitational torsion kinks and thick domain walls

TL;DR

This paper investigates the role of gravitational torsion kinks in thick domain walls within Einstein-Cartan theory, highlighting the conditions under which torsion significantly affects the domain wall's properties.

Contribution

It introduces a detailed analysis of gravitational torsion kinks as solutions for thick domain walls in Einstein-Cartan gravity, emphasizing the importance of spin-torsion energy.

Findings

Torsion contributes to the orthogonal pressure of the domain wall.

High spin-torsion energy is necessary for torsion to have a significant effect.

Torsion effects depend on the balance between torsion energy and the kink potential.

Abstract

The dynamics of a gravitational torsion kink as a plane symmetric thick domain wall solution of Einstein-Cartan (EC) field equation is given. The spin-torsion energy has to be as high as the gravitational kink potential otherwise torsion will not contribute as an appreciable effect to domain wall.Cartan torsion also contributes to the orthonal pressure of the domain wall.