Damping of density oscillations from bulk viscosity in quark matter
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866915018200580096 |
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| author | Hernández, José Luis Manuel, Cristina Tolos, Laura |
| author_facet | Hernández, José Luis Manuel, Cristina Tolos, Laura |
| contents | In this contribution, we extend the discussion about the calculation of the bulk viscosity of quark matter in the normal phase due to electroweak processes and its effect on the damping of baryon density oscillations that might occur in the coalescence of two compact stars. Employing the EoSs from the MIT bag model and perturbative quantum chromodynamics (pQCD) up to $\mathcal{O}(α_s)$, we analyze our results varying densities in the range of temperatures from 0 to 10 MeV for frequencies around 1 kHz. Our estimates show that bulk viscous effects might play a relevant role during the postmerger stage if the system reaches a deconfined quark matter phase. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2411_08710 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Damping of density oscillations from bulk viscosity in quark matter Hernández, José Luis Manuel, Cristina Tolos, Laura Nuclear Theory High Energy Astrophysical Phenomena High Energy Physics - Phenomenology In this contribution, we extend the discussion about the calculation of the bulk viscosity of quark matter in the normal phase due to electroweak processes and its effect on the damping of baryon density oscillations that might occur in the coalescence of two compact stars. Employing the EoSs from the MIT bag model and perturbative quantum chromodynamics (pQCD) up to $\mathcal{O}(α_s)$, we analyze our results varying densities in the range of temperatures from 0 to 10 MeV for frequencies around 1 kHz. Our estimates show that bulk viscous effects might play a relevant role during the postmerger stage if the system reaches a deconfined quark matter phase. |
| title | Damping of density oscillations from bulk viscosity in quark matter |
| topic | Nuclear Theory High Energy Astrophysical Phenomena High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2411.08710 |