Zeros of chromatic and Tutte (Potts) polynomials and general Ising model, and their accumulation sets for families of graphs

1 hour 14 mins 31 secs,  1.01 GB,  MPEG-4 Video  480x360,  25.0 fps,  44100 Hz,  1.84 Mbits/sec
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Description: Shrock, R (SUNY-Stony Brook)
Thursday 24 January 2008, 14:00-15:00
Zeros of Graph Polynomials
 
Created: 2008-02-08 11:07
Collection: Combinatorics and Statistical Mechanics
Publisher: Isaac Newton Institute
Copyright: Shrock, R
Language: eng (English)
Credits:
Author:  Shrock, R
 
Abstract: We discuss results on zeros of chromatic and Tutte polynomials (the latter being equivalent to the Potts model partition function ) in the q and temperature plane, and their accumulation sets for various families of graphs. We also present results on zeros of the q=2 Ising case in the presence of a nonzero magnetic field. This area combines combinatorics and graph theory with complex analysis and algebraic geometry, as well as statistical physics. A numer of areas for further research are suggested.
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