Single-sided domain walls in M-theory

TL;DR

This paper explores smooth, non-singular single-sided BPS domain walls in M-theory, including their construction as resolutions of Calabi-Yau orbifolds and their relation to solutions with negative cosmological constant.

Contribution

It introduces new single-sided BPS domain wall solutions in M-theory, providing a geometric resolution of Calabi-Yau orbifolds and expanding understanding of domain walls at the universe's end.

Findings

Constructed smooth, non-singular domain wall solutions

Resolved Calabi-Yau orbifolds via reflection identification

Connected domain walls to solutions with negative cosmological constant

Abstract

We describe some single-sided BPS domain wall configurations in M-theory. These are smooth non-singular resolutions of Calabi--Yau orbifolds obtained by identifying the two sides of the wall under reflection. They may thus be thought of as domain walls at the end of the universe. We also describe related domain wall type solutions with a negative cosmological constant.