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SUMMARY:Beyond the van Hove time scale - Volker Bach (Johannes Gutenberg-U
 niversität Mainz)
DTSTART:20181022T100000Z
DTEND:20181022T110000Z
UID:TALK112666@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Given an arbitrarily large\, but fixed\, time t >0\, we  deriv
 e approximations for the time evolution of the spin-boson model in terms o
 f the propagator generated by a free effective Hamiltonian.  Our construct
 ion rests on the renormalization group induced by the isospectral Feshbach
 -Schur ap. This is joint work  with Jacob Schach M&ouml\;ller and Matthias
  Westrich.
LOCATION:Seminar Room 1\, Newton Institute
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