Theory of non-linear diffusion with a physical gapped mode
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2022
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| _version_ | 1866913273891258368 |
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| author | Abbasi, Navid Kaminski, Matthias Tavakol, Omid |
| author_facet | Abbasi, Navid Kaminski, Matthias Tavakol, Omid |
| contents | In a system with one conserved charge the charge diffusion is modified by non-linear self-interactions within an effective field theory (EFT) of diffusive fluctuations. We include the slowest ultraviolet (UV) mode, constructing a UV-regulated EFT. The relaxation time of this UV mode is protected from renormalization, as supported by experimental data in a bad metal system. Furthermore, the retarded density-density Green's function acquires four branch points, eventually increasing the range of applicability. We discuss the fate of long-time-tails as well as implications for the quark gluon plasma. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2212_11499 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Theory of non-linear diffusion with a physical gapped mode Abbasi, Navid Kaminski, Matthias Tavakol, Omid High Energy Physics - Theory Statistical Mechanics Strongly Correlated Electrons Nuclear Experiment Nuclear Theory In a system with one conserved charge the charge diffusion is modified by non-linear self-interactions within an effective field theory (EFT) of diffusive fluctuations. We include the slowest ultraviolet (UV) mode, constructing a UV-regulated EFT. The relaxation time of this UV mode is protected from renormalization, as supported by experimental data in a bad metal system. Furthermore, the retarded density-density Green's function acquires four branch points, eventually increasing the range of applicability. We discuss the fate of long-time-tails as well as implications for the quark gluon plasma. |
| title | Theory of non-linear diffusion with a physical gapped mode |
| topic | High Energy Physics - Theory Statistical Mechanics Strongly Correlated Electrons Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2212.11499 |