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Condensed Matter Seminars

ics Condensed Matter
Thursday, February 24, 2011
3:30 PM
Physics Building, Room 204
Note special time.
Note special room.
Armin Rahmani [Host: Austen Lamacraft ]
Boston University
"Universal conductance in quantum multi-wire junctions"
 Slideshow (PDF)
Using boundary conformal field theory, we relate the universal conductance tensors of quantum multi-wire junctions to static correlation functions in a finite system. We then propose a general method for determining the conductance. Applying the method to a Y-junction of interacting quantum wires, we verify a theoretical prediction for the conductance of the chiral fixed-point of the Y-junction and then calculate the thus far unknown conductance of its M fixed point with the time-independent density matrix renormalization group method.

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