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The effects of the leading quark m a s corrections to the QCD sum rules for the 0'' scalar glueball are investigated. I n order to include the information from the confinement region of WD, the leading quark mass correction to the polarization function at Q2 = 0 for a renormalized group-invariant current With the quantum numbers .IpT = O++ are studied by means of the QCD lowenergy theorem. For the construction of the corresponding spectral function, we use a 'finite-width resonance plus continuum' model in which the dynamical corrections due to the non-vanishing meson masses are taken into account. Two types of the OCD sum rules, namely the Gauss-Weierstrass finite-energy sum rules and the Laplace transform sum rule, are used to investigate the properties of the lowest Oci scalar glueball. The effects of the non-vanishing quark masses htrn out to be not negligible for the determination of the glueball width; the intermediate value of the glueball mass is further confirmed by the leading quark mass correction, 'Supported by the National Natural Science Foundation of China 5 Permanent address.

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We have studied the squeezing properties of the atom and the radiation field in arbitrary intensity-dependent-coupling Jaynes-Cummings model when it is restricted to the following initial condition: the atom in its coherent state and the field in the vacuum state. The influence of virtual-photon processes on the atomic squeezing predicted by the Jaynes-Cummings model (JCM) has been examined. The relationship between the field and atomic squeezing in the resonant multi-photon JCM has been discussed. The symmetry between the field and atomic squeezing (SFAS) has been exposed in the resonant vacuum one-photon JCM, and the influence of non-resonant interaction and virtual-photon processes on the SFAS has also been discussed.PACS 42.50.Dv-Nonclassical photon states (including antibunched, squeezed, sub-Poissonian). PACS 42.50.Lc -Quantum fluctuations, quantum noise, and quantum jumps. PACS 42.50.Hz -Strong-field excitation of optical transitions in quantum systems; multi-photon processes; dynamic Stark shift. PACS 05.45 -Theory and models of chaotic systems.