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Princeton University CondMat/Math Physics Seminar Sept 22nd 2006  
Similar talk given at UC Davis Oct. 17^{th} 2006  


Rutgers University Math/Phys Seminar September 21^{st }2006  
(No PDF available; preprint here.)  


Oberwolfach Conference: Spatial Random Processes, September 6th 2006.  
Similar talk given at the IAS, Princeton Sept. 18^{th} 2006  
Similar talk given at the UC Irvine Probability Math/Phys Seminar March 7^{th} 2006  
For more a detailed set of slides, see:  
Helen Lei's talk, UCLA Math Feb 15^{th} 2006  


Mathematical Study of Mean–Field Driven Phase Transitions *  
AMS Western Section Meeting San Francisco April 30^{th} 2006


* A slightly more mathematical version of the Jan 19th talk.  


Title: Ordering Due to Spin–Waves (AKA Order by Disorder) Abstract: Certain spin–systems, including some deemed to be of relevance to the question of orbital ordering in transition metal compounds are (mathematically) studied. These systems have highly degenerate ground states characterized by a continuous symmetry. Notwithstanding their infrared behavior, spin–wave excitations are shown to stabilize certain states (“order due to disorder”) and multiple phases are established. 

93^{rd} Statistical Mechanics Conference May 17^{th} 2005  
Power–Point  

