Fwd: Coffee meeting Friday August 24

[Stefán Valdimarsson]

Þórður Jónsson asked me to forward the announcement about the Physics Coffee Meeting this Friday.

Stefán

Dear colleges,

Friday August 24 in VR-II-157 at 15:00 we have a talk:

Speaker: François David,
         Institut de Physique Théorique,
         Saclay, France

Title: Random matrix ensembles for quantum spins and decoherence

Abstract: I present a class of new random matrix ensembles relevant
for the study of quantum decoherence for quantum spins.
These ensembles generalize the standard GUE and GOE ensemble.
For a single quantum spin j coupled to an environment (open quantum
system), these ensembles lead to exact solutions for the dynamics of
decoherence and for quantum diffusion, including the non-markovian
regimes and a description of the quantum to classical transition.
Generalizations to closed quantum systems of interacting quantum spins

will be discussed.




With greetings,
--
Viðar Guðmundsson
Professor í eðlisfræði            Professor of physics
Raunvísindastofnun Háskólans      Science Institute
Dunhaga 3                         University of Iceland, Dunhaga 3,
107 Reykjavík                     IS-107 Reykjavik
(simi: 525 4695)                 (tel: +354-525 4695)

Email: vi...@hi.is
http://www.hi.is/~vidar/