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Updated: Jun 19, 2026
11:03
An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Nonequilibrium structures and slow dynamics in a two-dimensional spin system with competing long-range and
Omar Osenda1, Francisco A Tamarit, Sergio A Cannas
1Instituto de Física de la Facultad de Matemática, Astronomía y Física (IFFAMAF-CONICET), Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina. osenda@famaf.unc.edu.ar
Summary
This study introduces a lattice spin model with competing interactions, revealing that even without disorder, it forms glassy states. These states exhibit slow relaxation and characteristics similar to glass systems.
Area of Science:
- Statistical Mechanics
- Condensed Matter Physics
- Computational Physics
Background:
- Understanding complex systems requires models that capture competing interactions.
- Phase diagrams are crucial for predicting system behavior under varying conditions.
- Nonequilibrium dynamics in disordered systems often lead to glassy behavior.
Purpose of the Study:
- To analyze the equilibrium phase diagram of a novel lattice spin model.
- To investigate the nonequilibrium dynamics of this model after a temperature quench.
- To identify glassy characteristics in the absence of quenched disorder.
Main Methods:
- Development of a lattice spin model with short-range repulsion and long-range attraction.
- Finite-temperature equilibrium phase diagram analysis.
- Nonequilibrium simulations following a quench to subcritical temperatures.
Main Results:
- Identified ferromagnetic and antiferromagnetic as the only equilibrium phases.
- Observed the emergence of disordered nonequilibrium structures at low temperatures.
- Demonstrated slow system relaxation due to competing interactions.
Conclusions:
- The model exhibits glassy behavior without quenched disorder or geometric frustration.
- Competition between interactions is sufficient to induce slow dynamics and glass-like features.
- The findings offer insights into the fundamental mechanisms of glass formation.
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