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Variational estimates of chiral order parameter in 1+1 dimensional lattice QCD |
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| Authors: | X. -Q. Luo B. -P. He Q. -Z. Chen S. -H. Guo |
| Affiliation: | 1. Institute for Theoretical Physics, University of California, 93106, Santa Barbara, CA, USA 2. Department of Physics, Zhongshan University, 510275, Guangzhou, People's Republic of China 3. Department of Physics, South China Normal University, 510631, Guangzhou, People's Republic of China 4. Department of Physics, University of Arkansas, 72701, Fayettville, AR, USA |
| Abstract: | We discuss analytically the vacuum structure and chiral-symmetry breaking in 1+1 dimensional lattice QCD with naive and Wilson fermions, using a unitary transformation and the variational method developed recently. As an example, the chiral order parameter is evaluated systematically for any coupling constant and fermion mass by including the multilink-terms in the transformation. The expected scaling behavior is observed. Our results are consistent with the continuum predictions. |
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