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7 papers · 2 filters
Lattice QCD ensembles with four flavors of highly improved staggered quarks
The MILC Collaboration, A. Bazavov, C. Bernard +13
We present results from our simulations of quantum chromodynamics (QCD) with four flavors of quarks: u, d, s, and c. These simulations are performed with a one-loop Symanzik improv…
Sea Contributions to Hadron Electric Polarizabilities through Reweighting
Walter Freeman, Andrei Alexandru, Frank Lee +1
As part of our ongoing lattice study of the electric polarizabilities of hadrons using the background field approach, we use reweighting to examine the effect of the field on the s…
Chiral polarization scale of QCD vacuum and spontaneous chiral symmetry breaking
Andrei Alexandru, Ivan Horvath
It has recently been found that dynamics of pure glue QCD supports the low energy band of Dirac modes with local chiral properties qualitatively different from that of a bulk: whil…
Resonance parameters of the rho-meson from asymmetrical lattices
Craig Pelissier, Andrei Alexandru
We present a lattice QCD calculation of the parameters of the meson decay. The study is carried out on spatially asymmetric boxes using nHYP-smeared clover fermions with two ma…
Spontaneous Chiral Symmetry Breaking as Condensation of Dynamical Chirality
Andrei Alexandru, Ivan Horvath
The occurrence of spontaneous chiral symmetry breaking (SChSB) is equivalent to sufficient abundance of Dirac near-zeromodes. However, dynamical mechanism leading to breakdown of c…
The parameter in the overlap on domain-wall mixed action
M. Lujan, A. Alexandru, T. Draper +6
A direct calculation of the mixed-action parameter with valence overlap fermions on a domain-wall fermion sea is presented. The calculation is performed on four ensembles…