Recent developments in mathematical aspects of relativistic fluids

M Disconzi - Living Reviews in Relativity, 2024 - Springer
We review some recent developments in mathematical aspects of relativistic fluids. The goal
is to provide a quick entry point to some research topics of current interest that is accessible …

First-order general-relativistic viscous fluid dynamics

FS Bemfica, MM Disconzi, J Noronha - Physical Review X, 2022 - APS
We present the first generalization of Navier-Stokes theory to relativity that satisfies all of the
following properties:(a) the system coupled to Einstein's equations is causal and strongly …

Compartmentalization and coexistence in the dark sector of the universe

A Paliathanasis, K Duffy, A Halder, A Abebe - Physics of the Dark Universe, 2025 - Elsevier
We revise the cosmological interaction between dark energy and dark matter. More
precisely, we focus on models that support compartmentalization or coexistence in the dark …

Compartmental and Coexistence in the Dark Sector of the Universe

A Paliathanasis, K Duffy, A Halder, A Abebe - arXiv preprint arXiv …, 2024 - arxiv.org
We revise the cosmological interaction between dark energy and dark matter. More
precisely, we focus on models that support compartmentalization or co-existence in the dark …

Viscous unified dark matter models under scrutiny: Uncovering inconsistencies from dynamical system analysis

G Palma, G Gómez, N Cruz - Physical Review D, 2024 - APS
Viscous unified dark matter models aim to describe the dark sector of the Universe, as the
dark matter fluid itself gives rise to an accelerated expansion due to a negative bulk viscous …

Cosmological solutions with time-delay

A Paliathanasis - Modern Physics Letters A, 2022 - World Scientific
We introduce a time-delay function in bulk viscosity cosmology. Even for bulk viscosity
functions where closed-form solutions are known, because of the time-delay term, the exact …