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Beyond the van Hove time scale

Presented by: 
Volker Bach Johannes Gutenberg-Universität Mainz
Date: 
Monday 22nd October 2018 - 11:00 to 12:00
Venue: 
INI Seminar Room 1
Abstract: 
Given an arbitrarily large, but fixed, time t >0, we derive approximations for the time evolution of the spin-boson model in terms of the propagator generated by a free effective Hamiltonian. Our construction rests on the renormalization group induced by the isospectral Feshbach-Schur ap. This is joint work with Jacob Schach Möller and Matthias Westrich.
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Presentation Material: 
University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons