Coupling-induced universal dynamics in bilayer two-dimensional Bose gases
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866918173456990208 |
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| author | Chang, En Singh, Vijay Pal Beregi, Abel Rydow, Erik Mathey, Ludwig Foot, Christopher J. Sunami, Shinichi |
| author_facet | Chang, En Singh, Vijay Pal Beregi, Abel Rydow, Erik Mathey, Ludwig Foot, Christopher J. Sunami, Shinichi |
| contents | The emergence of order in many-body systems and the associated self-similar dynamics governed by dynamical scaling laws is a hallmark of universality far from equilibrium. Measuring and classifying such nontrivial behavior for novel symmetry classes remains challenging. Here, we realize a well-controlled interlayer coupling quench in a tunable bilayer two-dimensional Bose gas, driving the system to an ordered phase. We observe robust self-similar dynamics and a universal critical exponent consistent with diffusion-like coarsening, driven by vortex and antivortex annihilation induced by the interlayer coupling. Our results extend the understanding of universal dynamics in many-body systems and provide a robust foundation for quantitative tests of nonequilibrium effective field theories. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_23600 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Coupling-induced universal dynamics in bilayer two-dimensional Bose gases Chang, En Singh, Vijay Pal Beregi, Abel Rydow, Erik Mathey, Ludwig Foot, Christopher J. Sunami, Shinichi Quantum Gases Atomic Physics The emergence of order in many-body systems and the associated self-similar dynamics governed by dynamical scaling laws is a hallmark of universality far from equilibrium. Measuring and classifying such nontrivial behavior for novel symmetry classes remains challenging. Here, we realize a well-controlled interlayer coupling quench in a tunable bilayer two-dimensional Bose gas, driving the system to an ordered phase. We observe robust self-similar dynamics and a universal critical exponent consistent with diffusion-like coarsening, driven by vortex and antivortex annihilation induced by the interlayer coupling. Our results extend the understanding of universal dynamics in many-body systems and provide a robust foundation for quantitative tests of nonequilibrium effective field theories. |
| title | Coupling-induced universal dynamics in bilayer two-dimensional Bose gases |
| topic | Quantum Gases Atomic Physics |
| url | https://arxiv.org/abs/2510.23600 |