REVIEW 4 cited by
Reconstructing QCD Spectral Functions with Gaussian Processes
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
We reconstruct ghost and gluon spectral functions in 2+1 flavor QCD with Gaussian process regression. This framework allows us to largely suppress spurious oscillations and other common reconstruction artifacts by specifying generic magnitude and length scale parameters in the kernel function. The Euclidean propagator data are taken from lattice simulations with domain wall fermions at the physical point. For the infrared and ultraviolet extensions of the lattice propagators as well as the low-frequency asymptotics of the ghost spectral function, we utilize results from functional computations in Yang-Mills theory and QCD. This further reduces the systematic error significantly. Our numerical results are compared against a direct real-time functional computation of the ghost and an earlier reconstruction of the gluon in Yang-Mills theory. The systematic approach presented in this work offers a promising route towards unveiling real-time properties of QCD.
Forward citations
Cited by 4 Pith papers
-
Spectral densities from Euclidean-time lattice correlation functions
A Tikhonov-regularized inverse Laplace transform built on the Mellin basis extracts spectral densities from Euclidean correlators, with an exact discrete-lattice version and controlled smearing kernels.
-
Real-time dynamics from convex geometry
The paper derives model-independent, tight bounds on smeared real-time correlators from Euclidean lattice data by solving a finite-dimensional convex program.
-
The spectral reconstruction problem for thermal photon and dilepton rates
A proceedings review presents an improved estimator (lambda = 2) and new lattice QCD estimates for the thermal photon production rate from quark-gluon plasma.
-
A beginner's guide to functional methods in particle physics
A pedagogical review showing how Dyson-Schwinger, 3PI, and Bethe-Salpeter equations can be chained together to compute glueball masses in pure Yang-Mills theory, matching lattice QCD.
Discussion (0). Continue with ORCID to comment.