Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2403.03503 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866908284553789440 |
|---|---|
| author | Tan, Yang-yang Chen, Yong-rui Fu, Wei-jie Li, Wei-Jia |
| author_facet | Tan, Yang-yang Chen, Yong-rui Fu, Wei-jie Li, Wei-Jia |
| contents | 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 | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_03503 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Universality of pseudo-Goldstone damping near critical points Tan, Yang-yang Chen, Yong-rui Fu, Wei-jie Li, Wei-Jia High Energy Physics - Theory Statistical Mechanics High Energy Physics - Phenomenology 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. |
| title | Universality of pseudo-Goldstone damping near critical points |
| topic | High Energy Physics - Theory Statistical Mechanics High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2403.03503 |