Classifying the universal coarsening dynamics of a quenched ferromagnetic condensate

• URL: http://arxiv.org/abs/2303.05230v1
• Date: Thu, 9 Mar 2023 13:08:38 GMT
• Title: Classifying the universal coarsening dynamics of a quenched ferromagnetic condensate
• Authors: SeungJung Huh and Koushik Mukherjee and Kiryang Kwon and Jihoon Seo and Simeon I. Mistakidis and H. R. Sadeghpour and Jae-yoon Choi
• Abstract summary: Scale universality and self-similarity in physics provide a unified framework to classify phases of matter and dynamical properties of near-equilibrium systems. Here, we report on the first classification of universal coarsening dynamics in a ferromagnetic spinor gas. Our results represent a paradigmatic example of categorizing far-from-equilibrium dynamics in quantum many-body systems.
• Score: 0.052777567033180435
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Scale invariance and self-similarity in physics provide a unified framework to classify phases of matter and dynamical properties of near-equilibrium systems. However, extending this framework to far-from-equilibrium quantum many-body systems and categorizing their dynamics have remained a major challenge in physics. Here, we report on the first classification of universal coarsening dynamics in a quenched two-dimensional ferromagnetic spinor Bose gas. We observe spatiotemporal scaling of spin correlation functions with distinguishable scaling exponents, $1/z=0.58(2)$ and $1/z=0.43(2)$, characteristic, respectively, of binary and diffusive fluids. We find the universality class of the coarsening dynamics are determined by the symmetry of the order parameters and the annihilation dynamics of the topological defects. These observations are in excellent agreement with many-body simulations. Our results represent a paradigmatic example of categorizing far-from-equilibrium dynamics in quantum many-body systems.

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