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Spin Glasses

Criticality and Energy Landscapes

  • Book
  • © 2016

Overview

Authors:
  1. Marco Baity Jesi

    1. Institut de Physique Théorique, DRF, CEA Saclay, Gif-sur-Yvette, France

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  • Nominated as an outstanding Ph.D. thesis by the Universidad Complutense de Madrid and Sapienza University of Rome, Italy
  • Presents the only detailed historiographical research on the spin glass theory
  • Provides detailed appendices on numerical simulations, with techniques and codes for high-performance computing on finite-dimensional spin glasses
  • Offers an easy-to-use reference source thanks to a clear notation (with an acronym and a notation index) and an alphabetical index
  • Includes supplementary material: sn.pub/extras

Part of the book series: Springer Theses (Springer Theses)

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Table of contents (7 chapters)

  1. Front Matter

    Pages i-xxix
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  2. Introduction

    1. Front Matter

      Pages 1-1
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    2. An Introduction to Spin Glasses: History, Simulations and Phase Transition

      • Marco Baity Jesi
      Pages 3-42

  3. Criticality

    1. Front Matter

      Pages 43-43
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    2. The Ising Spin Glass in a Field

      • Marco Baity Jesi
      Pages 45-74

    3. Heisenberg Spin Glass with Random Exchange Anisotropy

      • Marco Baity Jesi
      Pages 75-95

  4. Energy Landscapes

    1. Front Matter

      Pages 97-97
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    2. Energy Landscape of m-Component Spin Glasses

      • Marco Baity Jesi
      Pages 99-113

    3. Zero-Temperature Dynamics

      • Marco Baity Jesi
      Pages 115-138

    4. Soft Modes and Localization in Spin Glasses

      • Marco Baity Jesi
      Pages 139-160

  5. Conclusions and Outlook

    1. Front Matter

      Pages 161-161
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    2. Conclusions

      • Marco Baity Jesi
      Pages 163-168

  6. Back Matter

    Pages 169-221
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Keywords

About this book

This thesis addresses the surprising features of zero-temperature statics and dynamics of several spin glass models, including correlations between soft spins that arise spontaneously during avalanches, and the discovery of localized states that involve the presence of two-level systems. It also presents the only detailed historiographical research on the spin glass theory. Despite the extreme simplicity of their definition, spin glasses display a wide variety of non-trivial behaviors that are not yet fully understood. In this thesis the author sheds light on some of these, focusing on both the search for phase transitions under perturbations of Hamiltonians and the zero-temperature properties and responses to external stimuli.
 
After introducing spin glasses and useful concepts on phase transitions and numerics, the results of two massive Monte Carlo campaigns on three-dimensional systems are presented: The first of these examines the de Almeida–Thouless transition, and proposes a new finite-size scaling ansatz, which accelerates the convergence to the thermodynamic limit. The second reconstructs the phase diagram of the Heisenberg spin glass with random exchange anisotropy.
 

Authors and Affiliations

  • Institut de Physique Théorique, DRF, CEA Saclay, Gif-sur-Yvette, France

    Marco Baity Jesi

About the author

Marco Baity Jesi achieved his bachelor and master degrees at Sapienza, University of Rome. He had the opportunity to spend one year in Paris, between the École Normale Superieure and Université Pierre et Marie Curie. For his masters thesis, a numerical study of spin glasses, he did a research stay at the Universidad Complutense de Madrid, where he collaborated with Victor Martín Mayor. This positive experience lead to a Ph.D. in cotutorship between Madrid and Rome, with Giorgio Parisi and Victor Martín Mayor as advisors. In this period he took advantage of long research stays at NYU and at Upenn. The results of these stays are partly included in his thesis manuscript. The thesis was defended at the end of the year 2015. Dr. Baity Jesi is currently in Paris, working as a postdoctoral fellow for Giulio Biroli at CEA Saclay.

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