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pro vyhledávání: '"relativistic kinetic theory"'
Relativistic kinetic theory has widespread application in astrophysics and cosmology. The interest has grown in recent years as experimentalists are now able to make reliable measurements on physical systems where relativistic effects are no longer n
Autor:
Gavassino, Lorenzo
Publikováno v:
Phys. Rev. D 110, 094012 (2024)
We rigorously prove that, in any relativistic kinetic theory whose non-hydrodynamic sector has a finite gap, the Taylor series of all hydrodynamic dispersion relations has a finite radius of convergence. Furthermore, we prove that, for shear waves, s
Externí odkaz:
http://arxiv.org/abs/2408.14316
Autor:
MacKay, Noah M.
The final pulse of gravitational wave emission is released in the chirp phase of binary coalescence. This proposes that the radiated energy of the GW is proportional to the chirp mass $\mathcal{M}$, with detection reports revealing the approximate sc
Externí odkaz:
http://arxiv.org/abs/2408.13917
Using the information current, we develop a Lorentz-covariant framework for modeling equilibrium fluctuations in relativistic kinetic theory in the grand-canonical ensemble. The resulting stochastic theory is proven to be causal and covariantly stabl
Externí odkaz:
http://arxiv.org/abs/2405.10878
Autor:
Gavassino, Lorenzo
Publikováno v:
Phys. Rev. Research 6, L042043 (2024)
We provide rigorous criteria to determine whether the non-hydrodynamic sector of a relativistic kinetic theory is gapless. These general criteria apply to both Boltzmann's equation and approximate models thereof, provided that the latter are consiste
Externí odkaz:
http://arxiv.org/abs/2404.12327
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Autor:
Ambruş, Victor E., Wagner, David
Publikováno v:
Phys. Rev. D 110 (2024) 056002
In this paper we present a relativistic Shakhov-type generalization of the Anderson-Witting relaxation time model for the Boltzmann collision integral. The extension is performed by modifying the path on which the distribution function $f_{\mathbf{k}
Externí odkaz:
http://arxiv.org/abs/2401.04017
Autor:
Ambruş, Victor E., Molnár, Etele
Publikováno v:
Phys.Lett.B 855 (2024) 138795
We present a relativistic Shakhov-type generalization of the Anderson-Witting relaxation time model for the Boltzmann collision integral to modify the ratio of momentum diffusivity to thermal diffusivity. This is achieved by modifying the path on whi
Externí odkaz:
http://arxiv.org/abs/2311.11603