Simulating QCD at finite density
read the original abstract
In this review, I recall the nature and the inevitability of the "sign problem" which plagues attempts to simulate lattice QCD at finite baryon density. I present the main approaches used to circumvent the sign problem at small chemical potential. I sketch how one can predict analytically the severity of the sign problem, as well as the numerically accessible range of baryon densities. I review progress towards the determination of the pseudo-critical temperature T_c(mu), and towards the identification of a possible QCD critical point. Some promising advances with non-standard approaches are reviewed.
This paper has not been read by Pith yet.
Forward citations
Cited by 10 Pith papers
-
Generation of gravitating solutions with Baryonic charge from Einstein-Scalar-Maxwell seeds
Exact correspondence maps Einstein-scalar-Maxwell solutions to gauged Skyrme-Maxwell-Einstein solutions with baryonic charge, illustrated by a Kerr-Newman-like example where baryonic charge quantization enforces quant...
-
As above, so below: assessing extremeness of the neutron-star equation of state based on the unstable branch
Requiring causal stable thermodynamically consistent extensions of neutron-star EOS models to perturbative QCD constrains high-density behavior and disfavors purely nucleonic descriptions for all stable stars.
-
Equation of State at High Baryon Densities from a Thermodynamically Informed Neural Network
A thermodynamically consistent neural-network equation of state for QCD matter at finite temperature and conserved charges that matches known low-density results and extrapolates to high baryon densities for use in re...
-
A collider as a quantum computer
Collider scattering processes such as electron-positron annihilation to muon pairs can be represented as quantum circuits with unitary and non-unitary components.
-
Species-dependent viscous corrections at particlization: A novel relaxation time approximation approach
A new RTA form with counter-terms yields species-dependent first-order viscous corrections that modify light-hadron yields and K/π, p/π ratios in p-Pb and Pb-Pb collisions.
-
Large Nc Truncations for SU(Nc) Lattice Yang-Mills Theory with Fermions
A multi-part truncation for lattice QCD with fermions enables explicit Hamiltonians in 1+1D and 2+1D and string-breaking simulations by capping basis states, electric energy, fermions per site, and using large-Nc matr...
-
Quark and hybrid stars with renormalization group improvement of NNLO perturbative QCD
RGOPT-resummed NNLO pQCD EoS for massive quarks in beta equilibrium is fitted and applied to construct pure quark stars (X=3.08-3.58) and hybrid stars (X~2-2.98) compatible with PSR J0740+6620 and GW190814.
-
The canonical approach at high temperature revisited
The paradox in the canonical approach at high temperature with the Roberge-Weiss transition originates from infinite-size effects and vanishes in finite-size systems due to smearing, validating the approach for lattice QCD.
-
Minimal superfluid vortices in chiral perturbation theory
Leading order chiral perturbation theory yields the minimal energy condition for vortex nucleation in the pion condensed phase, with vortices carrying quantized angular momentum and self-confining pions.
-
Equation of State at High Baryon Densities from a Thermodynamically Informed Neural Network
A physics-informed neural network produces a thermodynamically consistent 4D equation of state for QCD matter that reproduces lattice QCD and hadron resonance gas results while extrapolating to high baryon density for...
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.