Research Seminars @ Illinois

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Tailored for undergraduate researchers, this calendar is a curated list of research seminars at the University of Illinois. Explore the diverse world of research and expand your knowledge through engaging sessions designed to inspire and enlighten.

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Condensed Matter Seminar - "The Thermodynamic Structure of Short-Range Spin Glasses"

Event Type
Physics - Condensed Matter
ESB 190
Mar 29, 2024   1:00 pm  
Daniel Stein, New York University
Stephen Bullwinkel
Originating Calendar
Physics - Condensed Matter Seminar

The thermodynamics of spin glasses, and more generally the statistical mechanics of quenched disorder, is a problem of general interest to physicists and mathematicians from multiple disciplines and backgrounds. Its importance was recognized in 2021 with the awarding of the Nobel Prize in Physics to Giorgio Paris for his replica symmetry breaking solution of the Sherrington-Kirkpatrick model (a mean-field model of spin glasses) and its application to other problems in complex systems.

I will begin with a brief survey of spin glasses from both experimental and theoretical perspectives, followed by a description of some of the main thermodynamic features of Parisi's replica symmetry breaking solution of the mean-field spin glass.  I will then turn to the problem of understanding the nature of the spin glass phase in nearest-neighbor spin glass models in finite dimensions. The central question to be addressed is the nature of broken symmetry in these systems. This is still a subject of controversy, and although the issues surrounding it have become more sharply defined in recent years, it remains an open question.  I will explore this problem and present a unified picture of our current understanding of the structure of the spin glass phase in finite dimensions.



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