Classical Behaviour After a Phase Transition: I. Classical Order Parameters

Details Classical Behaviour After a Phase Transition: I. Classical Order Parameters Classical Behaviour After a Phase Transition: I. Classical Order Parameters

2002-02-05

arxiv.org/abs/hep-ph/0202042v1

Int.J.Theor.Phys. 41 (2002) 2121-2144

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 8 figures, to be published in the Proceedings of the Peyresq VI, Cosmological inflation and primordial fluctuations.

Scientific paper

We analyze the onset of classical field configurations after a phase transition. Firstly, we motivate the problem by means of a toy model in quantum mechanics. Subsequently, we consider a scalar field theory in which the system-field interacts with its environment, represented both by further scalar fields and by its own short-wavelength modes. We show that, for very rapid quenches, the order parameter can be treated classically by the time that it has achieved its ground state values (spinodal time).

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