Analysis of a fully packed loop model arising in a magnetic Coulomb phase

by Mr. Sambuddha Sanyal (TIFR)

Wednesday, May 30, 2012 from 14:30 to 15:30 (Asia/Kolkata)
at Colaba Campus ( A304 )

Description

I will first show how the Coulomb phase of spin ice can be realized on a fully packed two-colour loop model. Then I will discuss the statistics of these loops, which avoid themselves and other loops of the same colour, and contrast their behavior to an analogous two-dimensional model. I will also discuss the properties of another extended degree of freedom (worms), ﬂux lines of the emergent gauge ﬁeld of the Coulomb phase, which appear as ”Dirac strings” in spin ice. Finally (depending on time) I will mention mention implications of these results for related models, and experiments.

Reference:
L. D. C. Jaubert, M. Haque and R. Moessner, Phys. Rev. Lett. 107, 177202 (2011)