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Dynamics and critical behaviour of the spin-boson model

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If you have a question about this talk, please contact Dr G Moller .

The spin-boson model, describing a two-state system coupled to a bath of harmonic oscillators, serves as a paradigmatic example for quantum dissipative systems. Notable effects are the non-Markovian character of spin dynamics and the existence of a quantum phase transition at stronger dissipation. The talk will discuss selected aspects of the spin-boson model, including the controversy about the nature of the sub-ohmic quantum phase transition and its resolution. The basis of our investigation is a recently developed numerical approach, which extends the application range of exact diagonalization techniques to open quantum systems with continuous bath degrees of freedom.

This talk is part of the Theory of Condensed Matter series.

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Average on weekdays: 9098.75223214 kWh In person, SG1, Alison Richard Building, University of Cambridge CRASSH Meeting Room, 17 Mill Lane

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