Transport coefficients of chiral fluid dynamics using low-energy effective models
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866912966473940992 |
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| author | Nogarolli, Pedro Denicol, Gabriel S. Fraga, Eduardo S. |
| author_facet | Nogarolli, Pedro Denicol, Gabriel S. Fraga, Eduardo S. |
| contents | We investigate the first-order transport coefficients of a fluid made of quasiparticles with a temperature-dependent mass extracted from chiral models. We describe this system using an effective kinetic theory, given by the relativistic Boltzmann equation coupled to a temperature-dependent background field determined from the thermal masses. We then simplify the collision term using the relaxation time approximation and implement a Chapman-Enskog expansion to calculate all first-order transport coefficients. In particular, we compute the bulk and shear viscosities using thermal masses extracted from the linear sigma model coupled with constituent quarks and the NJL model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_18791 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Transport coefficients of chiral fluid dynamics using low-energy effective models Nogarolli, Pedro Denicol, Gabriel S. Fraga, Eduardo S. High Energy Physics - Phenomenology Nuclear Theory We investigate the first-order transport coefficients of a fluid made of quasiparticles with a temperature-dependent mass extracted from chiral models. We describe this system using an effective kinetic theory, given by the relativistic Boltzmann equation coupled to a temperature-dependent background field determined from the thermal masses. We then simplify the collision term using the relaxation time approximation and implement a Chapman-Enskog expansion to calculate all first-order transport coefficients. In particular, we compute the bulk and shear viscosities using thermal masses extracted from the linear sigma model coupled with constituent quarks and the NJL model. |
| title | Transport coefficients of chiral fluid dynamics using low-energy effective models |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2410.18791 |