Universal Family-Vicsek scaling in quantum gases far from equilibrium
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arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866915849407823872 |
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| author | Kwon, Kiryang Fujimoto, Kazuya Hur, Junhyeok Lee, Byungjin Hwang, Samgyu Kim, Sumin Hamazaki, Ryusuke Kawaguchi, Yuki Choi, Jae-yoon |
| author_facet | Kwon, Kiryang Fujimoto, Kazuya Hur, Junhyeok Lee, Byungjin Hwang, Samgyu Kim, Sumin Hamazaki, Ryusuke Kawaguchi, Yuki Choi, Jae-yoon |
| contents | Fluctuations in the growing surfaces of classical systems can exhibit universal scaling behavior, known as Family-Vicsek (FV) scaling. Although this phenomenon was originally discovered in classical stochastic models, recent theoretical studies have demonstrated the presence of FV scaling in quantum many-body systems as well. Here, we observe the universal FV scaling in a one-dimensional Bose gas in an optical lattice. By monitoring the fluctuations of particle number in half of the system, which corresponds to the surface roughness, we extract all scaling exponents and demonstrate that the entire relaxation-from the growth of quantum fluctuations to their saturation-is captured by a single universal scaling function. Our results demonstrate that universal scaling laws of classical surface growth extend to quantum many-body systems, establishing a unified framework for nonequilibrium universality across classical and quantum systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_09060 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Universal Family-Vicsek scaling in quantum gases far from equilibrium Kwon, Kiryang Fujimoto, Kazuya Hur, Junhyeok Lee, Byungjin Hwang, Samgyu Kim, Sumin Hamazaki, Ryusuke Kawaguchi, Yuki Choi, Jae-yoon Quantum Gases Statistical Mechanics Quantum Physics Fluctuations in the growing surfaces of classical systems can exhibit universal scaling behavior, known as Family-Vicsek (FV) scaling. Although this phenomenon was originally discovered in classical stochastic models, recent theoretical studies have demonstrated the presence of FV scaling in quantum many-body systems as well. Here, we observe the universal FV scaling in a one-dimensional Bose gas in an optical lattice. By monitoring the fluctuations of particle number in half of the system, which corresponds to the surface roughness, we extract all scaling exponents and demonstrate that the entire relaxation-from the growth of quantum fluctuations to their saturation-is captured by a single universal scaling function. Our results demonstrate that universal scaling laws of classical surface growth extend to quantum many-body systems, establishing a unified framework for nonequilibrium universality across classical and quantum systems. |
| title | Universal Family-Vicsek scaling in quantum gases far from equilibrium |
| topic | Quantum Gases Statistical Mechanics Quantum Physics |
| url | https://arxiv.org/abs/2603.09060 |