Physics @ Berkeley
Events in Physics
Title: Quantum Spin Liquid: From Drought To Deluge    (Colloquia)
Start Date: 10/08/2007
Time: 4:30 pm
Location: 1 LeConte
Speaker: Patrick Lee
Affiliation: MIT
Contact Person: Nathan Proctor   (510) 642-3034

The idea of anti-ferromagnetic order was initially greeted with skeptism when Louis Neel introduced it in the 30s but is now considered obvious. Indeed the search for an exception has turned up empty-handed for 30 years until recently, when a couple of promising examples have surfaced. I shall argue that if confirmed, this represent a new state of matter, called quantum spin liquid, which exhibits novel properties such as emergent fermionic excitations and gauge fields and is related to the de-confinement of a strongly coupled lattice gauge theory