Math & Computer Science Colloquium Series
Math & Computer Science Colloquium Series

This notice is from the archives of The Notice Board. Information contained in this notice was accurate at the time of publication but may no longer be so.

Barb Hodgson
Math & Computer Science
November 19, 2012


Dr. Chris Godsil, University of Waterloo

Friday - Nov. 23, 2012
noon to 12:50 p.m.
B650 UHall

Title: Continuous Quantum Walks on Graphs

Abstract: If A is the adjacency matrix of a graph X , then the matrix exponential U (t) = exp(itA) determines what physicists term a continuous quantum walk. They ask questions such as: for which graphs are the vertices a and b and a t such that |U (t)a,b | = 1? The basic problem is to relate the physical properties of the system with properties of the underlying graphs, and to study this we make use of results from the theory of graph spectra, number theory, ergodic theory. . . . My talk will present some of the progress on this topic.


This notice is posted to the Event Calendar on the following dates:

Back to the Notice Board