Breaking BEC

Understand

In this work quantum corrections to the classical evolution of a relativistic scalar condensate are studied.

• The problem is approached by means of two different perturbative approaches: the 2-particle-irreducible (2PI) effective action and the expansion in the self-coupling.
• In the weak coupling regime, the decoherence of the classical state is observed.
• The corresponding timescale is identified with the quantum break-time.