Classical Behavior After a Phase Transition: I. Classical Order Parameters |
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| Authors: | F. C. Lombardo R. J. Rivers F. D. Mazzitelli |
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| Affiliation: | (1) Theoretical Physics Group, Blackett Laboratory, Imperial College, London, UK;(2) Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires –, Ciudad Universitaria, Pabellón I, Buenos Aires, Argentina;(3) Theoretical Physics Group, Blackett Laboratory, Imperial College, London, UK |
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| Abstract: | 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 taken for it to achieve its ground state values (spinodal time). |
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| Keywords: | decoherence phase transitions topological defects |
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