<正> Using the Schwinger Dyson equation and perturbation theory,we calculate the two-quark condensates forthe light quarks u,d,strange quark s and a heavy quark
<正> Based on the general direct method developed by Lou et al.[J.Phys.A:Math.Gen.38 (2005) L129],the symmetry group theorem is obtained,from that both the Lie
<正> We study superfluidity of paired Bosonic atoms in optical lattices.The atoms have strong repulsive on-siteenergy.Single atom tunneling is severely suppress
<正> Based on the concept of adiabatic invariant,the perturbation to Mei symmetry and adiabatic invariantsfor nonholonomic mechanical systems in terms of quasi-