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- W2786543198 abstract "Prior studies of nonequilibrium dynamics using anisotropic hydrodynamics have used the relativistic Anderson-Witting scattering kernel or some variant thereof. In this paper, we make the first study of the impact of using a more realistic scattering kernel. For this purpose, we consider a conformal system undergoing transversally homogenous and boost-invariant Bjorken expansion and take the collisional kernel to be given by the leading order $2ensuremath{leftrightarrow}2$ scattering kernel in scalar $ensuremath{lambda}{ensuremath{phi}}^{4}$. We consider both classical and quantum statistics to assess the impact of Bose enhancement on the dynamics. We also determine the anisotropic nonequilibrium attractor of a system subject to this collisional kernel. We find that, when the near-equilibrium relaxation-times in the Anderson-Witting and scalar collisional kernels are matched, the scalar kernel results in a higher degree of momentum-space anisotropy during the system's evolution, given the same initial conditions. Additionally, we find that taking into account Bose enhancement further increases the dynamically generated momentum-space anisotropy." @default.
- W2786543198 created "2018-02-23" @default.
- W2786543198 creator A5011146579 @default.
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- W2786543198 date "2018-04-20" @default.
- W2786543198 modified "2023-09-27" @default.
- W2786543198 title "Anisotropic hydrodynamics with a scalar collisional kernel" @default.
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- W2786543198 doi "https://doi.org/10.1103/physrevc.97.044911" @default.
- W2786543198 hasPublicationYear "2018" @default.
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