Universality of pseudo-Goldstone damping near critical points
Abstract Real-time dynamics of strongly correlated systems, in particular its critical dynamics near phase transitions, have been always on the cutting edge of studies in diverse fields of physics, e.g., high energy physics, condensed matter, holography, etc. In this work, we investigate the critica...
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| Format: | Article |
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Nature Portfolio
2025-03-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-58170-1 |
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| author | Yang-yang Tan Yong-rui Chen Wei-jie Fu Wei-Jia Li |
| author_facet | Yang-yang Tan Yong-rui Chen Wei-jie Fu Wei-Jia Li |
| author_sort | Yang-yang Tan |
| collection | DOAJ |
| description | Abstract Real-time dynamics of strongly correlated systems, in particular its critical dynamics near phase transitions, have been always on the cutting edge of studies in diverse fields of physics, e.g., high energy physics, condensed matter, holography, etc. In this work, we investigate the critical damping of collective modes associated with spontaneous breaking of approximate symmetries, which are called pseudo-Goldstone modes, in strongly correlated systems. Using the Schwinger-Keldysh field theory, we find a universal pseudo-Goldstone damping via the critical O(N) model that has never been found before by other approaches. Different from the conventional damping found in holography and hydrodynamics, the new one is controlled by critical fluctuations, hence is invisible in mean-field systems or strongly correlated systems with classical gravity duals. Since the critical damping depends solely on the universalities of the critical point, irrespective of the microscopic details, our conclusion should be applicable to a wide class of interacting systems. |
| format | Article |
| id | doaj-art-6eaf81b4e87349a9af94c592b2b95877 |
| institution | DOAJ |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-6eaf81b4e87349a9af94c592b2b958772025-08-20T02:49:35ZengNature PortfolioNature Communications2041-17232025-03-0116111010.1038/s41467-025-58170-1Universality of pseudo-Goldstone damping near critical pointsYang-yang Tan0Yong-rui Chen1Wei-jie Fu2Wei-Jia Li3School of Physics, Dalian University of TechnologySchool of Physics, Dalian University of TechnologySchool of Physics, Dalian University of TechnologySchool of Physics, Dalian University of TechnologyAbstract Real-time dynamics of strongly correlated systems, in particular its critical dynamics near phase transitions, have been always on the cutting edge of studies in diverse fields of physics, e.g., high energy physics, condensed matter, holography, etc. In this work, we investigate the critical damping of collective modes associated with spontaneous breaking of approximate symmetries, which are called pseudo-Goldstone modes, in strongly correlated systems. Using the Schwinger-Keldysh field theory, we find a universal pseudo-Goldstone damping via the critical O(N) model that has never been found before by other approaches. Different from the conventional damping found in holography and hydrodynamics, the new one is controlled by critical fluctuations, hence is invisible in mean-field systems or strongly correlated systems with classical gravity duals. Since the critical damping depends solely on the universalities of the critical point, irrespective of the microscopic details, our conclusion should be applicable to a wide class of interacting systems.https://doi.org/10.1038/s41467-025-58170-1 |
| spellingShingle | Yang-yang Tan Yong-rui Chen Wei-jie Fu Wei-Jia Li Universality of pseudo-Goldstone damping near critical points Nature Communications |
| title | Universality of pseudo-Goldstone damping near critical points |
| title_full | Universality of pseudo-Goldstone damping near critical points |
| title_fullStr | Universality of pseudo-Goldstone damping near critical points |
| title_full_unstemmed | Universality of pseudo-Goldstone damping near critical points |
| title_short | Universality of pseudo-Goldstone damping near critical points |
| title_sort | universality of pseudo goldstone damping near critical points |
| url | https://doi.org/10.1038/s41467-025-58170-1 |
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