University of Cambridge > Talks.cam > TCM Blackboard Series > Phase transitions in highly constrained spin systems: Ordering from the Coulomb phase.

Phase transitions in highly constrained spin systems: Ordering from the Coulomb phase.

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

If you have a question about this talk, please contact Joe Bhaseen.

Many classical, geometrically frustrated antiferromagnets have macroscopically degenerate ground states. In a class of three-dimensional systems, the set of degenerate ground states has power-law correlations and is an example of a Coulomb phase, with long-wavelength fluctuations described by a Gaussian solenoidal field. A perturbation applied to the system can lift the degeneracy and induce a phase transition. Because of the power-law correlations (or, equivalently, the solenoidal nature of the degrees of freedom), phase transitions of this kind are unusual.

In this seminar, I aim to give a straightforward introduction to the area and to discuss these phase transitions from several points of view.

This talk is part of the TCM Blackboard Series series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2020 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity