Probing internal dissipative processes of neutron stars with gravitational waves during the inspiral of neutron star binaries

JL Ripley, N Yunes - Physical Review D, 2023 - APS
We study the impact of out-of-equilibrium, dissipative effects on the dynamics of inspiraling
neutron stars. We find that modeling dissipative processes (such as those from the stars …

A constraint on the dissipative tidal deformability of neutron stars

JL Ripley, A Hegade KR, RS Chandramouli… - Nature Astronomy, 2024 - nature.com
The gravitational waves emitted by neutron star binaries probe the physics of matter at
supranuclear densities. During the late inspiral, tidal deformations raised on each star by the …

Estimate for the bulk viscosity of strongly coupled quark matter using perturbative QCD and holography

J Cruz Rojas, T Gorda, C Hoyos, N Jokela… - Physical Review Letters, 2024 - APS
Modern hydrodynamic simulations of core-collapse supernovae and neutron-star mergers
require knowledge not only of the equilibrium properties of strongly interacting matter, but …

Dissipative tidal effects to next-to-leading order and constraints on the dissipative tidal deformability using gravitational wave data

JL Ripley, N Yunes - Physical Review D, 2024 - APS
Dissipative tidal interactions can be used to probe the out-of-equilibrium physics of neutron
stars using gravitational wave observations. In this paper, we present the first post …

Bulk viscosity of nuclear matter with pions in the neutrino-trapped regime

SP Harris, B Fore, S Reddy - Physical Review C, 2025 - APS
Recent work [Fore and Reddy, Phys. Rev. C 101, 035809 (2020) 10.1103/PhysRevC.
101.035809] has shown that a population of thermal pions could modify the equation of state …

Dam** of density oscillations from bulk viscosity in quark matter

JL Hernández, C Manuel, L Tolos - Physical Review D, 2024 - APS
We study the dam** of density oscillations in the quark matter phase that might occur in
compact stars. To this end we compute the bulk viscosity and the associated dam** time …

[HTML][HTML] Effects of hyperon potentials and symmetry energy in quark deconfinement

R Kumar, K Aryal, A Clevinger, V Dexheimer - Physics Letters B, 2024 - Elsevier
In this letter we discuss how the results of recent nuclear experiments that correspond to
measurements at low densities can affect the equation of state at large densities 4: and …

Weak rates in strongly coupled cold quark matter

C Hoyos, A Olzi, D Rodriguez-Fernandez - Journal of High Energy Physics, 2024 - Springer
A bstract The rates of flavor-changing weak processes are crucial in determining the
conditions of beta equilibrium in neutron stars and mergers, influencing the dam** of …

Relativistic bulk rheology: From neutron star mergers to viscous cosmology

L Gavassino, J Noronha - Physical Review D, 2024 - APS
We develop the first causal and stable theory of a bulk-viscous relativistic pseudoplastic (or
dilatant) fluid. This new formalism brings to light the rheological properties of several …

A dissipative extension to ideal hydrodynamics

MJ Hatton, I Hawke - arxiv preprint arxiv:2405.09495, 2024 - arxiv.org
We present a formulation of special relativistic, dissipative hydrodynamics (SRDHD) derived
from the well-established M\" uller-Israel-Stewart (MIS) formalism using an expansion in …