Gordon Godfrey Theoretical Seminar 2005
Order
and transport in complex quantum systems: Pars non pro toto
Prof.
Holger Fehske
Institute of Physics, Ernst Moritz Arndt University, Greifswald, Germany
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Friday,
18 February, 2005
School of Physics, 12 p.m.,
Room 5
Abstract
At large, strongly interacting quantum many-particle systems are more
than their parts. In solids, for instance, the collective behaviour
of electrons can be highly correlated on a macroscopic scale. In these
systems order phenomena and sometimes spectacular transport properties
are intimately related. Exceptionally important are metal insulator
transitions. The talk exemplarily addresses Anderson localisation and
quantum percolation in disordered materials, spin-charge separation
and quantum phase transitions in 1D electron-phonon systems, short-range
order e®ects and colossal magneto-resistance in manganese oxides,
as well as exciton formation and Wigner crystallisation in complex
electron-hole plasmas.
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