ELFT HÍRADÓ

[StatFizSzeminar <statfiz AT glu.elte.hu>]

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                     ELTE TTK  Elméleti Fizikai Tanszék
                      STATISZTIKUS FIZIKAI SZEMINÁRIUM

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                        Új helyszín: -1.63 sz. terem
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                     2009. szeptember 16, szerda 11 óra

                                Giulio Casati
                  Center for Complex Systems CNR-INFM and 
                       University of Insubria at Como  


                     "Classical and quantum transport: 
                from Fourier law to thermoelectric efficiency"


The understanding of the underlying dynamical mechanisms which 
determines the macroscopic laws of heat conduction is a long standing 
task of non-equilibrium statistical mechanics. A better understanding 
of such mechanism may also lead to potentially interesting applications 
(thermal diodes and thermal transistors) based on the possibility 
to control the heat flow. Of particular interest is the problem, 
almost completely unexplored, of the derivation of Fourier law 
from quantum dynamics. To this end we discuss heat transport in a model 
of a quantum interacting spin chain and we provide clear numerical 
evidence that Fourier law sets in above the transition to quantum 
chaos. Finally we discuss the problem of thermoelectric power generation 
and refrigeration and we show that appropriately chosen dynamical models 
may lead to thermoelectric engines approaching the Carnot efficiency.

            1117 Budapest, Pázmány P. sétány 1A, Északi tömb
                                 -1.63 terem

                                   honlap:
                       http://glu.elte.hu/~statfiz

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