Unruh quantization in presence of a condensate

TL;DR

This paper demonstrates that Unruh quantization can be implemented in Minkowski spacetime with a Bose-Einstein condensate, which provides the boundary conditions needed for Fulling quantization within the Rindler wedge.

Contribution

It shows how a Bose-Einstein condensate enables Unruh and Fulling quantizations in Minkowski spacetime, extending previous understanding to condensate-influenced scenarios.

Findings

Unruh quantization is realizable with a condensate in Minkowski spacetime.

The condensate contains an infinite number of particles in the zero boost mode.

Boundary conditions for Fulling quantization are provided by the condensate.

Abstract

We have shown that the Unruh quantization scheme can be realized in Minkowski spacetime in the presence of Bose-Einstein condensate containing infinite average number of particles in the zero boost mode and located basically inside the light cone. Unlike the case of an empty Minkowski spacetime the condensate provides the boundary conditions necessary for the Fulling quantization of the part of the field restricted only to the Rindler wedge of Minkowski spacetime.