Starts 6 Feb 2018 11:00

Ends 6 Feb 2018 12:00

Central European Time

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Joint ICTP/SISSA Statistical Physics Seminar: Measures of Irreversibility in Quantum Phase Space

Starts 6 Feb 2018 11:00

Ends 6 Feb 2018 12:00

Central European Time

SISSA, Via Bonomea 265, room 128

Irreversibility, which is usually quantified by the entropy production, is one of the most fundamental concepts in thermodynamics, with deep scientific and technological consequences. It is also an emergent concept, that stems from the complex interactions between a system and its environment. However, as will be discussed in this talk, the standard theory of entropy production breaks down in the quantum case, in particular in the limit of zero temperature. Motivated by this, I will present recent results which overcome these difficulties using the idea of phase space entropy measures for bosonic systems. As I will show, our theory not only overcomes the zero temperature limitations but also allows one to extend the results to deal with non-equilibrium reservoirs. As an application, we will consider squeezed thermal baths, which are instance of a grand-canonical Generalized Gibbs Ensemble and therefore allow us to construct an Onsager transport theory, akin to the theory of thermoelectricity. Finally, I will also discuss how entropy production emerges from the perspective of the environment and the system environment correlations.