REVIEW 4 cited by
Estimate for the bulk viscosity of strongly coupled quark matter using perturbative QCD and holography
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
read the original abstract
Modern hydrodynamic simulations of core-collapse supernovae and neutron-star mergers require knowledge not only of the equilibrium properties of strongly interacting matter, but also of the system's response to perturbations, encoded in various transport coefficients. Using perturbative and holographic tools, we derive here an improved weak-coupling and a new strong-coupling result for the most important transport coefficient of unpaired quark matter, its bulk viscosity. These results are combined in a simple analytic pocket formula for the quantity that is rooted in perturbative Quantum Chromodynamics at high densities but takes into account nonperturbative holographic input at neutron-star densities, where the system is strongly coupled. This expression can be used in the modeling of unpaired quark matter at astrophysically relevant temperatures and densities.
Forward citations
Cited by 4 Pith papers
-
Quark flavors in hot and dense holographic QCD: setup and comparison to data
A 2+1 flavor holographic QCD model fitted to lattice thermodynamics predicts a smoother nuclear-to-quark matter transition with lower latent heat than earlier V-QCD models.
-
Fermi-liquid view of viscosity in cold and dense nucleon matter
In a quasiparticle Fermi liquid with medium-dependent mass, imposing Landau matching makes the bulk viscosity manifestly non-negative and parametrically smaller than shear viscosity at low temperature, ζ/η ∝ (T/μ*)⁴.
-
Bulk viscosity and $n$-component fluids
A general framework for n-component bulk viscosity in second-order hydrodynamics, with transport coefficients expressed as matrix invariants and a Green's function that decomposes into n Israel-Stewart modes.
-
Locating the QCD critical point with neutron-star observations
Bayesian analysis of a hybrid holographic EOS with neutron-star constraints locates the QCD critical endpoint at μ≈626 MeV and T≈119 MeV and predicts a strong first-order deconfinement transition at zero temperature.
Discussion (0). Sign in to comment.