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Spin Glasses : Criticality and Energy Landscapes / by Marco Baity Jesi

By: Resource type: Ressourcentyp: Buch (Online)Book (Online)Language: English Series: Springer Theses, Recognizing Outstanding Ph.D. Research | SpringerLink BücherPublisher: [Cham] : Springer, 2016Description: Online-Ressource (XXIX, 221 p. 71 illus., 24 illus. in color, online resource)ISBN:
  • 9783319412313
Subject(s): Genre/Form: Additional physical formats: 9783319412306 | Druckausg.: 978-3-319-41230-6 | Erscheint auch als: Spin Glasses. Druck-Ausgabe [Cham] : Springer, 2016. xxix, 221 SeitenDDC classification:
  • 530.474
LOC classification:
  • QC173.45-173.458
DOI: DOI: 10.1007/978-3-319-41231-3Online resources: Summary: Introduction -- The Ising Spin Glass in a Feld -- Heisenberg Spin Glass with Random Exchange Anisotropy -- Energy Landscape of m-component Spin Glasses -- Zero-temperature Dynamics -- Soft Modes and Localization in Spin Glasses -- Conclusions. .Summary: 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. .PPN: PPN: 1657737942Package identifier: Produktsigel: ZDB-2-SEB | ZDB-2-SXP | ZDB-2-PHA
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