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13 papers · 2 filters
Uncovering Low-Dimensional Topological Structure in the QCD Vacuum
I. Horvath, S. J. Dong, T. Draper +5
Recently, we have pointed out that sign-coherent 4-dimensional structures can not dominate topological charge fluctuations in QCD vacuum at all scales. Here we show that an enhance…
Magnetic polarizability of hadrons from lattice QCD
L. Zhou, F. X. Lee, W. Wilcox +1
We extract the magnetic polarizability from the quadratic response of a hadron's mass shift in progressively small static magnetic fields. The calculation is done on a 24x12x12x24…
Topological Charge Correlators, Spectral Bounds, and Contact Terms
H. Thacker, S. J. Dong, T. Draper +4
The structure of topological charge fluctuations in the QCD vacuum is strongly restricted by the spectral negativity of the Euclidean 2-point correlator for and the prese…
Empirical Baye's Method and Test in Very Light Quark Range from The Overlap Lattice QCD
S. J. Dong, T. Draper, I. Horvath +2
Based on Bayesian theorem an empirical Baye's method is discussed. A programming chart for mass spectrum fitting is suggested. A weakly constrained way for getting priors to solve…
Excited baryons from Bayesian priors and overlap fermions
F. X. Lee, S. J. Dong, T. Draper +4
Using the constrained-fitting method based on Bayesian priors, we extract the masses of the two lowest states of octet and decuplet baryons with both parities. The calculation is d…
Quenched Chiral Log and Light Quark Mass from Overlap Fermions
Terrence Draper, Shao-Jing Dong, Ivan Horvath +4
We study the quenched chiral behavior of the pion with mass as low as MeV. The calculation is done on a quenched lattice of size and fm with…