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Updated: Jan 11, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Nonreciprocal Spin-Glass Transition and Aging
Giulia Garcia Lorenzana1,2, Ada Altieri2, Giulio Biroli1
1Sorbonne Université, Université PSL, Laboratoire de Physique de l'École normale supérieure, ENS, CNRS, Université de Paris, F-75005 Paris, France.
Nonreciprocity can surprisingly preserve glassiness in disordered systems. Our study reveals an exceptional-point transition leading to oscillating amorphous phases and unique nonreciprocal aging dynamics.
Area of Science:
- Physics
- Complex Systems
- Statistical Mechanics
Background:
- Disordered systems commonly display aging and glass transitions.
- Nonreciprocity is generally thought to disrupt glassiness.
Purpose of the Study:
- To investigate the effect of nonreciprocity on glassiness in a specific model.
- To explore the dynamics of coupled complex agents under antagonistic interactions.
Main Methods:
- Utilized a bipartite spherical Sherrington-Kirkpatrick model.
- Employed dynamical mean-field theory calculations.
Main Results:
- Identified an exceptional-point-mediated transition from a static disorder phase to an oscillating amorphous phase.
- Observed nonreciprocal aging characterized by slow dynamics and oscillations.
Conclusions:
- Nonreciprocity does not always destroy glassiness; it can lead to novel oscillating amorphous phases.
- The findings challenge previous assumptions about nonreciprocity's impact on disordered systems.
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