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CAMP Seminar: Relaxation and thermalization in many-body quantum systems: Role of the initial state

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Lea Ferreira dos Santos, Yeshiva University - SCW
When
29 April 2014 from 3:30 PM to 4:30 PM
Where
339 Davey Laboratory
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Contact Phone
814-865-2286
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This talk addresses three fundamental aspects for the description of isolated many-body quantum systems initially far from equilibrium: (i) the short-time dynamics, (ii) the size of the fluctuations after relaxation, (iii) the conditions to reach thermal equilibrium. It is shown that the relaxation process and the decay of the fluctuations with system size depend on the energy distribution of the initial state and may be very similar for both chaotic and integrable systems. The general picture associating chaos with the onset of thermalization is also further elaborated. It is argued that thermalization may not occur in the chaotic regime for initial states with very low energies, and it may occur in integrable systems when the initial state is sufficiently delocalized.

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