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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:12070009  ( MP4 Medium Res , MP4 Low Res , MP3 , PDF ) Which Format?
Entangling Superconductivity and antiferromagnetism: Quantum Monte Carlo without the sign Problem
Speaker(s): Subir Sachdev
Abstract: It has long been known that a metal near an instability to antiferromagnetism also has a weak-coupling Cooper instability to spin-singlet d-wave-like superconductivity. However, the theory of the antiferromagnetic quantum critical point flows to strong-coupling in two spatial dimensions, and so the fate of the superconductivity has also been unclear. I will describe a method to realize the generic antiferromagnetic quantum critical in a metal in a sign-problem-free Monte Carlo simulation. Results showing Fermi surface reconstruction and unconventional spin-singlet superconductivity across the critical point are obtained.
Date: 11/07/2012 - 2:30 pm
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