35 research outputs found
Magnetic moments and electromagnetic radii of nucleon and in an extended GBE model
We derive the exchange currents of pseudoscalar, vector, and scalar mesons
from Feynman diagrams, and use them to calculate the magnetic form factors of
nucleon and . The magnetic moments and electromagnetic radii are
obtained by using those form factors and the parameters determined from the
masses of nucleon and . We find the magnetic moments and
electromagnetic radii of nucleon and can be produced very well
in the extended Goldstone-boson-exchange model (GBE) in which all of
pseudoscalar, vector and scalar meson nonet are included. The magnetic moments
of are closer to experiment values and results from lattice
calculation than the results obtained by the model without other mesons except
for pion and sigma.Comment: 15 pages,5 figure
Continuous-variable Werner state: separability, nonlocality, squeezing and teleportation
We investigate the separability, nonlocality and squeezing of
continuous-variable analogue of the Werner state: a mixture of pure two-mode
squeezed vacuum state with local thermal radiations. Utilizing this Werner
state, coherent-state teleportation in Braunstein-Kimble setup is discussed.Comment: 7 pages, 4 figure