University of Minnesota
School of Physics & Astronomy

CM Journal Club

Wednesday, September 28th 2016
4:30 pm:
CM Journal Club in PAN 110
Speaker: Mengxing Ye
Subject: Kosterlitz-Thouless transition

Berezinskii-Kosterlitz-Thouless transition describes the phase transition from the quasi long range ordered phase to disordered phase of certain 2d classical systems. The physics picture of the BKT transition as a transition the bounded vortex-antivortex pair becomes unpaired will be presented first. I will show how the original theory can be mapped to interacting vortices (=2d coulomb gas) through a mathematically rigorous duality transformation. Through the RG analysis, we will understand the nature of the phase transition in terms of the interacting vortices.

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