University of Cambridge > Talks.cam > Electronic Structure Discussion Group > Nonequilibrium dynamics in the Hubbard model

  Browse A-Z

Log in

Cambridge users (raven)details Other usersdetails No account?details

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

Nonequilibrium dynamics in the Hubbard model

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

If you have a question about this talk, please contact Dr. Mike Towler.

The (fermionic) Hubbard model is often considered as the paradigmatic minimal model for correlated electrons on lattices. Recent progress in the field of ultracold atom gases and pump-probe spectroscopy of correlated materials has stimulated interest in its nonequilibrium properties. Those can be probed by quantum quenches, i.e. nonadiabatic changes of parameters (e.g. the interaction) in real time. I will briefly review my earlier work based on perturbative and RG approaches to show that the response to small quenches within the Fermi liquid regime is generic, i.e. does not depend on the dimension (d>1) and lattice structure of the model [1]. Quenches across the phase transition are numerically challenging. A brief outlook to recent work [2] will be given which has shown that large similarities between the real time and the imaginary time evolution exist which may allow to probe dynamical critical exponents using imaginary time projector QMC methods with i-time dependent Hamiltonians.

[1] M. Moeckel and S. Kehrein, PRL 100 , 175702 (2008)

[2] C. De Grandi,1 A. Polkovnikov,2 and A. W. Sandvik arxiv 1301.2329 (2013)

This talk is part of the Electronic Structure Discussion Group series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

EMBL-EBI Science & Society Veritas Forum Cambridge Wright Lecture Series Type the title of a new list here Measuring National Well-Being – what matters to you? HPS History Workshop

Other talks

CANCELLED First year PhD student fieldwork seminar Bioengineering conference: Innovation through convergence Behavioural phenotypes of children born preterm: what we know and future research avenues Barnum, Bache and Poe: the forging of science in the Antebellum US Surrogate models in Bayesian Inverse Problems Symplectic topology of K3 surfaces via mirror symmetry Black and British Migration “Modulating Tregs in Cancer and Autoimmunity” Scale and anisotropic effects in necking of metallic tensile specimens Glucagon like peptide-1 receptor - a possible role for beta cell physiology in susceptibility to autoimmune diabetes A passion for pottery: a photographer’s dream job
 

© 2006-2024 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity