Finite Volume Study of the Delta Magnetic Moments Using Dynamical Clover Fermions
نویسندگان
چکیده
We calculate the magnetic dipole moment of the ∆ baryon using a background magnetic field on 2+1-flavors of clover fermions on anisotropic lattices. We focus on the finite volume effects that can be significant in background field studies, and thus we use two different spatial volumes in addition to several quark masses.
منابع مشابه
Screening of magnetic moments in PuAm alloy: local density approximation and dynamical mean field theory study.
The puzzling absence of Pu magnetic moments in a PuAm environment is explored using the self-consistent dynamical mean field theory calculations in combination with the local density approximation. We argue that delta-Pu-Am alloys provide an ideal testbed for investigating the screening of moments from the single impurity limit to the dense limit. Several important effects can be studied: volum...
متن کاملThermodynamics with Dynamical Clover Fermions
We investigate the finite temperature behavior of nonperturbatively improved clover fermions on lattices with temporal extent Nt = 4 and 6. Unfortunately in the gauge coupling range, where the clover coefficient has been determined nonperturbatively, the finite temperature crossover/transition occurs at heavy pseudoscalar masses and large pseudoscalar to vector meson mass ratios. However, on an...
متن کاملChiral Structure in Baryon Magnetic Moments
The issue of chiral extrapolation has been highlighted as an important problem facing modern lattice QCD simulations [1,2], if one is to make any comparison with experiment. Extrapolations in quark mass are nontrivial because of nonanalytic contributions which arise as a consequence of dynamically broken chiral symmetry in the QCD vacuum [3]. At typical lattice quark masses there is little evid...
متن کاملElectromagnetic Form Factors with FLIC fermions
The Fat-Link Irrelevant Clover (FLIC) fermion action provides a new form of nonperturbative O(a) improvement and allows efficient access to the light quark-mass regime. FLIC fermions enable the construction of the nonperturbatively O(a)-improved conserved vector current without the difficulties associated with the fine tuning of the improvement coefficients. The simulations are performed with a...
متن کاملEpsilon regime calculations with reweighted clover fermions
We perform fully dynamical simulations at small quark masses by reweighting in the quark mass, calculating the weight factors stochastically. This approach avoids some of the technical difficulties associated with direct simulations. We find that the weight factors fluctuate only moderately on nHYP smeared dynamical Wilson-clover ensembles, and demonstrate that the overlap between the original ...
متن کامل