THE IMPROVED HAM1 LTONI AN AND ρ-ω MASS DIFFERENCE IN LATTICE GAUGE THEORY+ |
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Authors: | GUO Shuo-bong CHEN Qi-zhou LIU Jin-ming |
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Affiliation: | Department of Physics, Zhongshan University, Cuangzhou, China |
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Abstract: | We formulate a Hamiltonian theory on the lattice including next-to-nearest neighbor fermion interactions. A canonical transformation is made to induce a momentum-dependent mass term. The meson spectrum is studied by using this Hamiltonian. The current algebra formula for the pion mass is derived. The ρ-ω mass ratio in the intermediate coupling region is in agreement with the experimental value. |
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