An unexpected topological censor

TL;DR

This paper explores how a space- and time-dependent cosmological constant can act as a topological censor, preventing the existence of Morris-Thorne wormholes and potentially influencing cosmological phenomena like inflation.

Contribution

It introduces the concept that a dynamic cosmological constant can serve as a topological censor, extending previous wormhole studies to more general mbda variations.

Findings

Space- and time-dependent mbda prevents wormhole existence

Dynamic mbda acts as a topological censor

Potential implications for inflationary cosmology

Abstract

Morris-Thorne wormholes with a cosmological constant \Lambda have been studied extensively, even allowing \Lambda to be replaced by a space variable scalar. These wormholes cannot exist, however, if \Lambda is both space and time dependent. Such a \Lambda will therefore act as a topological censor. While not likely to have a bearing on the present, possible cosmological consequences of inflation cannot be discounted.