University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Quantum quenches in the sine-Gordon model: a semiclassical approach

Quantum quenches in the sine-Gordon model: a semiclassical approach

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact info@newton.ac.uk.

QIMW01 - Quantum integrable models in and out of equilibrium

Co-author: Gergely Zarand (Budapest University of Technology and Economics)

I will report results on the time evolution of correlation functions after quantum quenches in the sine-Gordon model computed using a semiclassical approach which is expected to yield accurate results for small and slow quenches producing slow quasiparticles with low density. I will demonstrate this by showing that the method reproduces the results of a recent form factor calculation of the relaxation of expectation values. Extending these results, the expectation values of most vertex operators will be shown not to decay to zero. I will give analytic expressions for the relaxation of dynamic correlation functions to find that they have diffusive behavior for large timelike separation. At the end of my talk I will show preliminary results obtained with an improved “semi-semiclassical” version of the method.

This talk is part of the Isaac Newton Institute Seminar Series series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2019 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity