2,233 research outputs found
Low-energy p-d scattering and He-3 in pionless EFT
We calculate low-energy proton--deuteron scattering in the framework of
pionless effective field theory. In the quartet channel, we calculate the
elastic scattering phase shift up to next-to-next-to-leading order in the power
counting. In the doublet channel, we perform a next-to-leading order
calculation. We obtain good agreement with the available phase shift analyses
down to the scattering threshold. The phase shifts in the region of
non-perturbative Coulomb interactions are calculated by using an optimised
integration mesh. Moreover, the Coulomb contribution to the 3He-3H binding
energy difference is evaluated in first order perturbation theory. We comment
on the implications of our results for the power counting of subleading
three-body forces.Comment: 27 pages, 13 figures, typos corrected in Sec. V.A (trinucleon wave
functions
Phase structures of strong coupling lattice QCD with overlap fermions at finite temperature and chemical potential
We perform the first study of lattice QCD with overlap fermions at finite
temperature and chemical potential . We start from the Taylor expanded
overlap fermion action, and derive in the strong coupling limit the effective
free energy by mean field approximation. On the () plane and in the
chiral limit, there is a tricritical point, separating the second order chiral
phase transition line at small and large , and first order chiral
phase transition line at large and small
Fast field-cycling NMR of cartilage : a way toward molecular imaging
Peer reviewedPublisher PD
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