Defect Formation Preempts Dynamical Symmetry Breaking in Closed Quantum Systems

Details Defect Formation Preempts Dynamical Symmetry Breaking in Closed Quantum Systems Defect Formation Preempts Dynamical Symmetry Breaking in Closed Quantum Systems

2011-03-16

arxiv.org/abs/1103.3208v1

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

We show that no matter how slowly a quantum-to-classical symmetry breaking process is driven, the adiabatic limit can never be reached in a macroscopic body. Massive defect formation preempts an adiabatic quantum-classical crossover and triggers the appearance of a symmetric non-equilibrium state that recursively collapses into the classical state, breaking the symmetry at punctured times. The presence of this state allows the quantum-classical transition to be investigated and controlled in mesoscopic devices by supplying externally the proper dynamical symmetry breaking perturbation.

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