121193140
Dynamical symmetry breaking, confinement with flat-bottom potential
Abstract In this Letter, we calculate the dressed quark propagator with the flat bottom potential in the framework of the rainbow Schwinger–Dyson equation. Then based on the nonperturbative dressed quark propagator, we calculate the  π decay constant and the quark condensate. The  π decay constant is an important parameter in describing the interplay between dynamical symmetry breaking and confinement, while the quark condensate is an order parameter for dynamical chiral symmetry breaking. To implement confinement, we prove that the dressed quark propagator has no poles on the real timelike p 2 axial, the absence of Kallen–Lehmann spectral representation obviously precludes the existence of free quarks.
33904752
Calculation of some properties of the vacuum
In this paper, we calculate the dressed quark propagator with the flat bottom potential in the framework of the rainbow Schwinger-Dyson equation, which is determined by mean field approximation of the global colour model Lagrangian. The dressed quark propagator exhibits a dynamical symmetry-breaking phenomenon and gives a constituent quark mass about 392 MeV, which is close to the value of commonly used constituent quark mass in the chiral quark model. Then based on the dressed quark propagator, we calculate some properties of the vacuum, such as quark condensate, mixed quark condensate gs , four quark condensate , tensor, pi vacuum susceptibilities. The numerical results are compatible with the values of other theoretical approaches.
18256400
Calculation of Chiral Lagrangian Coefficients
We present a systematic way to combine the global colour model and the instanton liquid model to calculate the chiral Lagrangian coefficients. Our numerical results are in agreement well with the experimental values.
118954426
Calculation of the quark condensate through Schwinger-Dyson equation
In this letter, we clarify the algebra expression for calculating the quark condensate based on the non-perturbative quark propagator calculated through Schwinger-Dyson equation. The quark condensates, which characterize the low energy QCD vacuum, should not get a divergent quantity at large energy scale; the re-normalization group evolution behaviour at large energy scale therefore should be interpreted as "smeared collective effects" for it contains both perturbative and non-perturbative parts. 
We prefer the integral expression and get a quantity which is both convergent and scale dependent.
119491970
Analysis of the vertices rho NN, rho Sigma Sigma and rho Xi Xi with light-cone QCD sum rules
In this article, we calculate the strong coupling constants of the {rho}NN, {rho}{sigma}{sigma}, and {rho}{xi}{xi} in the framework of the light-cone QCD sum rules approach. The strong coupling constants of the meson-baryon-baryon are the fundamental parameters in the one-boson exchange model which describes the baryon-baryon interactions successfully. The numerical values are in agreement with the existing calculations in part. The electric and magnetic F/(F+D) ratios deviate from the prediction of the vector meson dominance theory; the SU(3) symmetry breaking effects are very large.
118829634
Analysis of the X(1835) and related baryonium states with Bethe-Salpeter equation
Abstract.In this article, we study the mass spectrum of the baryon-antibaryon bound states p$ \bar{{p}}$ , $ \Sigma$$ \bar{{\Sigma}}$ , $ \Xi$$ \bar{{\Xi}}$ , $ \Lambda$$ \bar{{\Lambda}}$ , p$ \bar{{N}}$(1440) , $ \Sigma$$ \bar{{\Sigma}}$(1660) , $ \Xi$$ \bar{{\Xi}}^{{\prime}}_{}$ and $ \Lambda$$ \bar{{\Lambda}}$(1600) with the Bethe-Salpeter equation. The numerical results indicate that the p$ \bar{{p}}$ , $ \Sigma$$ \bar{{\Sigma}}$ , $ \Xi$$ \bar{{\Xi}}$ , p$ \bar{{N}}$(1440) , $ \Sigma$$ \bar{{\Sigma}}$(1660) , $ \Xi$$ \bar{{\Xi}}^{{\prime}}_{}$ bound states maybe exist, and the new resonances X(1835) and X(2370) can be tentatively identified as the p$ \bar{{p}}$ and p$ \bar{{N}}$(1440) (or N(1400)$ \bar{{p}}$ bound states, respectively, with some gluon constituents, and the new resonance X(2120) may be a pseudoscalar glueball. On the other hand, the Regge trajectory favors identifying the X(1835) , X(2120) and X(2370) as the excited $ \eta^{{\prime}}_{}$(958) mesons with the radial quantum numbers n = 3 , 4 and 5, respectively.
15030872
The Strong coupling constant g(D* D pi) and final-state interactions
In this article, we study the contribution from the final-state interactions to the strong coupling constant $g_{D^* D \pi}$. We take an assumption that the momentum transfers in the strong decay $D^{*+} \to D^0 \pi^+$ be large to validate the operator product expansion in the light-cone QCD sum rules. At large momentum transfers, the final-state interactions play an important role, and we should take them into account.
925818
Topological order parameters for interacting topological insulators.
We propose a topological order parameter for interacting topological insulators, expressed in terms of the full Green's functions of the interacting system. We show that it is exactly quantized for a time-reversal invariant topological insulator, and it can be experimentally measured through the topological magneto-electric effect. This topological order parameter can be applied to both interacting and disordered systems, and used for determining their phase diagrams.
119216177
Radiative Transitions Among the Vector and Scalar Heavy Quarkonium States with Covariant Light-Front Quark Model
In this article, we study the radiative transitions among the vector and scalar heavy quarkonium states with the covariant light-front quark model. In calculations, we observe that the radiative decay widths are sensitive to the constituent quark masses and the shape parameters of the wave-functions, and reproduce the experimental data with suitable parameters.