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math.AP2021
Relativistic BGK model for massless particles in the FLRW spacetime
Byung-Hoon Hwang, Ho Lee, Seok-Bae Yun
In this paper, we address the Cauchy problem for the relativistic BGK model proposed by Anderson and Witting for massless particles in the Friedmann-Lemaitre-Robertson-Walker (FLRW…
math.AP2020
The spatially homogeneous Boltzmann equation for massless particles in an FLRW background
Ho Lee
We study the spatially homogeneous relativistic Boltzmann equation for massless particles in an FLRW background with scattering kernels in a certain range of soft and hard potentia…