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15 papers · 1 filter
Variance reduction in lattice QCD observables via normalizing flows
Ryan Abbott, Denis Boyda, Yang Fu +5
Normalizing flows can be used to construct unbiased, reduced-variance estimators for lattice field theory observables that are defined by a derivative with respect to action parame…
Fourier Accelerated HMC in the SU(N) X SU(N) Principal Chiral Model
Roger Horsley, Pablo Morande, Brian Pendleton
We report the results of Fourier-accelerated HMC simulations of 2D SU(N) X SU(N) principal chiral models for N = 2, 3, 4, 6, 9. These models share several key properties with 4D QC…
improvement of the flavour singlet scalar density in a setup with Wilson fermions
Pia Leonie Jones Petrak, Jochen Heitger, Fabian Joswig
We report on our Ward identity determination of the improvement coefficient for the flavour singlet scalar density, namely , from three-flavour lattic…
Three relativistic neutrons in a finite volume
Zachary T. Draper, Maxwell T. Hansen, Fernando Romero-López +1
We generalize the relativistic field-theoretic (RFT) three-particle finite-volume formalism to systems of three identical, massive, spin- fermions, such as three neutrons. Thi…
Hadronic observables from master-field simulations
Marco Cè, Mattia Bruno, John Bulava +5
Substantial progress has been made recently in the generation of master-field ensembles. This has to be paired with efficient techniques to compute observables on gauge field confi…
Progress on the exploratory calculation of the rare Hyperon decay
Felix Erben, Vera Gülpers, Maxwell T. Hansen +2
The rare Hyperon decay is an flavour changing neutral current process, which is highly suppressed within the Standard Model, and is therefore se…