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Quantum Simulation

Spontaneously broken gauge symmetry in a Bose gas with constant particle number

arXiv
Authors: Alexej Schelle

Year

2014

Paper ID

46783

Status

Preprint

Abstract Read

~2 min

Abstract Words

107

Citations

N/A

Abstract

The interplay between spontaneously broken gauge symmetries and Bose-Einstein condensation has long been controversially discussed in science, since the equation of motions are invariant under phase transformations. Within the present model it is illustrated that spontaneous symmetry breaking appears as a non-local process in position space, but within disjoint subspaces of the underlying Hilbert space. Numerical simulations show that it is the symmetry of the relative phase distribution between condensate and non-condensate quantum fields which is spontaneously broken when passing the critical temperature for Bose-Einstein condensation. Since the total number of gas particles remains constant over time, the global U(1)-gauge symmetry of the system is preserved.

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  • The interplay between spontaneously broken gauge symmetries and Bose-Einstein condensation has long been controversially discussed in science, since the equation of motions are...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1410.7058 [2] arXiv https://arxiv.org/abs/1410.7058 [3] Publisher https://arxiv.org/abs/1410.7058

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