"Universal conductance in quantum multiwire junctions"Armin Rahmani , Boston University [Host: Austen Lamacraft ]
ABSTRACT:
Using boundary conformal field theory, we relate the universal conductance tensors of quantum multiwire junctions to static correlation functions in a finite system. We then propose a general method for determining the conductance. Applying the method to a Yjunction of interacting quantum wires, we verify a theoretical prediction for the conductance of the chiral fixedpoint of the Yjunction and then calculate the thus far unknown conductance of its M fixed point with the timeindependent density matrix renormalization group method.

Condensed Matter Seminar Thursday, February 24, 2011 3:30 PM Physics Building, Room 204 Note special room. 
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