Fluctuating relativistic dissipative hydrodynamics as a gauge theory

T Dore, L Gavassino, D Montenegro, M Shokri… - Annals of Physics, 2022 - Elsevier
We argue that different formulations of hydrodynamics are related to uncertainties in the
definitions of local thermodynamic and hydrodynamic variables. We show that this ambiguity …

Fully developed relativistic turbulence

E Calzetta - Physical Review D, 2021 - APS
We use a simple model consisting of energy-momentum tensor conservation and a Maxwell-
Cattaneo equation for its viscous part to study nonlinear phenomena in a real relativistic …

Linearized dispersion relations in viscous relativistic hydrodynamics

G Perna, E Calzetta - Physical Review D, 2021 - APS
We compute the dispersion relations for scalar, vector and tensor modes of a viscous
relativistic fluid, linearized around an equilibrium solution, for a divergence type theory …

Modeling stochastic fluctuations in relativistic kinetic theory

G Soares Rocha, L Gavassino, N Mullins - Physical Review D, 2024 - APS
Using the information current, we develop a Lorentz-covariant framework for modeling
equilibrium fluctuations in relativistic kinetic theory in the grand-canonical ensemble. The …

Relativistic viscous effects on the primordial gravitational waves spectrum

N Mirón-Granese - Journal of Cosmology and Astroparticle …, 2021 - iopscience.iop.org
We study the impact of the viscous effects of the primordial plasma on the evolution of the
primordial gravitational waves (pGW) spectrum from Inflation until today, considering a self …

Steady asymptotic equilibria in conformal relativistic fluids

E Calzetta - Physical Review D, 2022 - APS
When one considers a shock wave in the frame where the shock is at rest, on either side one
has a steady flow which converges to equilibrium away from the shock. However …

Modelling stochastic fluctuations in relativistic kinetic theory

GS Rocha, L Gavassino, N Mullins - arXiv preprint arXiv:2405.10878, 2024 - arxiv.org
Using the information current, we develop a Lorentz-covariant framework for modeling
equilibrium fluctuations in relativistic kinetic theory in the grand-canonical ensemble. The …

Primordial weibel instability

N Mirón-Granese, E Calzetta… - Journal of Cosmology and …, 2022 - iopscience.iop.org
We study the onset of vector instabilities in the post-inflationary epoch of the Universe as a
mechanism for primordial magnetic fields amplification. We assume the presence of a …

Field theory approaches to relativistic hydrodynamics

N Mirón Granese, A Kandus, E Calzetta - Entropy, 2022 - mdpi.com
Just as non-relativistic fluids, oftentimes we find relativistic fluids in situations where random
fluctuations cannot be ignored, with thermal and turbulent fluctuations being the most …

Cumulants of conserved charges in hydrodynamic simulations

R Hirayama, F Grassi, WM Serenone, JY Ollitrault - Physical Review C, 2023 - APS
We introduce a fast and simple method of computing cumulants of net-proton or net-charge
fluctuations in event-by-event hydrodynamic simulations of heavy-ion collisions. One …