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Updated: Jan 7, 2026
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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
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Supercooled Goldstone Bosons at the QCD Chiral Phase Transition.
Adrien Florio1,2, Eduardo Grossi3, Aleksas Mazeliauskas4
1Universität Bielefeld, Fakultät für Physik, D-33615 Bielefeld, Germany.
Physical Review Letters
|January 2, 2026
Summary
Quenches to broken phases universally enhance long-wavelength Goldstone bosons. This finding, confirmed by simulations, predicts enhanced low-momentum pions in heavy-ion collisions.
Area of Science:
- Condensed matter physics
- Quantum chromodynamics (QCD)
- High-energy physics
Background:
- Model G describes the O(4) antiferromagnet and QCD chiral phase transition.
- Nonequilibrium dynamics after quenches can lead to universal phenomena.
- Goldstone bosons are gapless excitations in systems with broken continuous symmetries.
Purpose of the Study:
- To investigate the universal nonequilibrium enhancement of Goldstone bosons.
- To connect theoretical predictions to experimental observations in heavy-ion collisions.
Main Methods:
- Utilizing scaling arguments for coarsening dynamics.
- Employing stochastic simulations of the phase transition.
- Analyzing the nonlinear dynamics of a superfluid effective theory.
Main Results:
- A universal parametric enhancement of long-wavelength Goldstone bosons was found.
- Scaling arguments predicted, and simulations confirmed, this enhancement in the infrared spectra.
- The nonlinear superfluid effective theory details the enhancement mechanism.
Conclusions:
- The study predicts a parametric enhancement of low-momentum pions in heavy-ion collisions.
- Current hydrodynamic models underpredict this enhancement without critical dynamics.
- This work bridges theoretical predictions with potential LHC heavy-ion collision observations.
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