Far-from-equilibrium attractors with a realistic non-conformal equation of state
Using anisotropic hydrodynamics, we examine the existence of early-time attractors of non-conformal systems undergoing Bjorken expansion. In the case of a constant mass, we find that the evolution of the scaled longitudinal pressure is insensitive to variations of initial conditions converging onto...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-04-01
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| Series: | Nuclear Physics B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0550321323000779 |
| _version_ | 1797857738922917888 |
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| author | Mubarak Alqahtani |
| author_facet | Mubarak Alqahtani |
| author_sort | Mubarak Alqahtani |
| collection | DOAJ |
| description | Using anisotropic hydrodynamics, we examine the existence of early-time attractors of non-conformal systems undergoing Bjorken expansion. In the case of a constant mass, we find that the evolution of the scaled longitudinal pressure is insensitive to variations of initial conditions converging onto an early-time universal curve and eventually merging with the late-time Navier-Stokes attractor (the hydrodynamic attractor). On the other hand, the bulk and the shear viscous corrections do not show an early-time attractor behavior. These results are consistent with previous studies considering a constant mass. When a realistic equation of state is included in the dynamics with a thermal mass, we demonstrate for the first time the absence of strict late-time universal attractors. However, a semi-universal feature of the evolution at very late times remains. |
| first_indexed | 2024-04-09T21:01:39Z |
| format | Article |
| id | doaj.art-3299d4bd13a744dd9661897c91d0138a |
| institution | Directory Open Access Journal |
| issn | 0550-3213 |
| language | English |
| last_indexed | 2024-04-09T21:01:39Z |
| publishDate | 2023-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Physics B |
| spelling | doaj.art-3299d4bd13a744dd9661897c91d0138a2023-03-29T09:21:10ZengElsevierNuclear Physics B0550-32132023-04-01989116148Far-from-equilibrium attractors with a realistic non-conformal equation of stateMubarak Alqahtani0Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi ArabiaUsing anisotropic hydrodynamics, we examine the existence of early-time attractors of non-conformal systems undergoing Bjorken expansion. In the case of a constant mass, we find that the evolution of the scaled longitudinal pressure is insensitive to variations of initial conditions converging onto an early-time universal curve and eventually merging with the late-time Navier-Stokes attractor (the hydrodynamic attractor). On the other hand, the bulk and the shear viscous corrections do not show an early-time attractor behavior. These results are consistent with previous studies considering a constant mass. When a realistic equation of state is included in the dynamics with a thermal mass, we demonstrate for the first time the absence of strict late-time universal attractors. However, a semi-universal feature of the evolution at very late times remains.http://www.sciencedirect.com/science/article/pii/S0550321323000779 |
| spellingShingle | Mubarak Alqahtani Far-from-equilibrium attractors with a realistic non-conformal equation of state Nuclear Physics B |
| title | Far-from-equilibrium attractors with a realistic non-conformal equation of state |
| title_full | Far-from-equilibrium attractors with a realistic non-conformal equation of state |
| title_fullStr | Far-from-equilibrium attractors with a realistic non-conformal equation of state |
| title_full_unstemmed | Far-from-equilibrium attractors with a realistic non-conformal equation of state |
| title_short | Far-from-equilibrium attractors with a realistic non-conformal equation of state |
| title_sort | far from equilibrium attractors with a realistic non conformal equation of state |
| url | http://www.sciencedirect.com/science/article/pii/S0550321323000779 |
| work_keys_str_mv | AT mubarakalqahtani farfromequilibriumattractorswitharealisticnonconformalequationofstate |