Dissipative-type theories for Bjorken and Gubser flows

L Cantarutti, E Calzetta - International Journal of Modern Physics A, 2020 - World Scientific
We use the dissipative-type theory (DTT) framework to solve for the evolution of conformal
fluids in Bjorken and Gubser flows from isotropic initial conditions. The results compare well …

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 …

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 …

Nonlinear fluctuations in relativistic causal fluids

N Miron-Granese, A Kandus, E Calzetta - Journal of High Energy Physics, 2020 - Springer
A bstract In the Second Order Theories (SOT) of real relativistic fluids, the non-ideal
properties of the flows are described by a new set of dynamical tensor variables. In this work …

Primordial gravitational waves amplification from causal fluids

N Miron-Granese, E Calzetta - Physical Review D, 2018 - APS
We consider the evolution of the gravitational wave spectrum for super-Hubble modes in
interaction with a relativistic fluid, which is regarded as an effective description of fluctuations …

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 …

Causal relativistic hydrodynamics of conformal Fermi-Dirac gases

M Aguilar, E Calzetta - Physical Review D, 2017 - APS
In this paper we address the derivation of causal relativistic hydrodynamics, formulated
within the framework of divergence type theories (DTTs), from kinetic theory for spinless …

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 …

Nonlinear Dynamics of Tensor Modes in Conformal Real Relativistic Fluids

N Mirón-Granese, E Calzetta, A Kandus - arXiv preprint arXiv:1812.01003, 2018 - arxiv.org
In the Second Order Theories (SOT) of real relativistic fluids, the non-ideal properties are
described by a new set of dynamical tensor variables. In this work we explore the non-linear …