The transverse part of the two-point function of the 1^(-/+) vector gluonic current is calculated by including the perturbative contributions and the non-perturbative ones resulted from condensates of dimensions up to...The transverse part of the two-point function of the 1^(-/+) vector gluonic current is calculated by including the perturbative contributions and the non-perturbative ones resulted from condensates of dimensions up to six.In a usual"resonance plus continuum " model of the spectral function,the quantum chromodynamics sum rules for the 1^(-/+) vector odd-glueball are derived,and the 1^(-/+) mass of that glueball is determined to be 1.87 GeV.展开更多
The three-gluon tensor current of quantum numbers Jpc=2^(++) is constructed.The corresponding two-point function is calculated by including not only the perturbative contribution but also the non-perturbative ones res...The three-gluon tensor current of quantum numbers Jpc=2^(++) is constructed.The corresponding two-point function is calculated by including not only the perturbative contribution but also the non-perturbative ones resulting from condensates of dimensions up to six.In a usual“resonance plus continuum”model of the spectral function of the current,the quantum chromodynamics sum rules for the 2^(++) three-gluon tensor glueball are deduced,and the mass of that glueball is determined to be 2.0 GeV approximately.展开更多
A new way to derive the formula of the dynamical temperature by using the invariance of the Liouville measure and the ergodicity hypothesis is presented, based on the invariance of the functional under the transformat...A new way to derive the formula of the dynamical temperature by using the invariance of the Liouville measure and the ergodicity hypothesis is presented, based on the invariance of the functional under the transformation of the measure. The obtained dynamical temperature is intrinsic to the underlying dynamics of the system. A molecular dynamical simulation of a one-dimensional many-body system in the Lennard-Jones model has been performed. The temperature calculated from the Hamiltonian for the stationary state of the system coincides with that determined with the thermodynamical method.展开更多
The contribution of the fermion determinant to the gluon condensates at a finite temperature is calculated in the framework of the grand partition function for a w€ak-interacting instanton medium of a disordered phase...The contribution of the fermion determinant to the gluon condensates at a finite temperature is calculated in the framework of the grand partition function for a w€ak-interacting instanton medium of a disordered phase.It is found that the temperature behavior of both chromomagnetic and chromoelectric gluon condensates depends sensitively on the flavor number.The more the flavors are,the faster the gluon condensates decrease.In the three-Havor case,the gluon condensates would be vanish(or the scale invariance would be restored)approximately at the temperature of 180 MeV.展开更多
The first principle of quantum chromodynamics is used to calculate the static perturbative three-body potential between three valence quarks in baryons,which is gauge invariant and flavor-dependent,and of magnitude of...The first principle of quantum chromodynamics is used to calculate the static perturbative three-body potential between three valence quarks in baryons,which is gauge invariant and flavor-dependent,and of magnitude of the same order as the next non-leading static q-q potential.Its effect on an S-state baryon composed of three valence quarks of equal mass may be viewed as a slight increase of the constituent quark masses with respect to those in mesons.展开更多
基金Supported by the National Natural Science Foundation of China.
文摘The transverse part of the two-point function of the 1^(-/+) vector gluonic current is calculated by including the perturbative contributions and the non-perturbative ones resulted from condensates of dimensions up to six.In a usual"resonance plus continuum " model of the spectral function,the quantum chromodynamics sum rules for the 1^(-/+) vector odd-glueball are derived,and the 1^(-/+) mass of that glueball is determined to be 1.87 GeV.
基金Supported by the National Natural Science Foundation of China under Grant No.19475029.
文摘The three-gluon tensor current of quantum numbers Jpc=2^(++) is constructed.The corresponding two-point function is calculated by including not only the perturbative contribution but also the non-perturbative ones resulting from condensates of dimensions up to six.In a usual“resonance plus continuum”model of the spectral function of the current,the quantum chromodynamics sum rules for the 2^(++) three-gluon tensor glueball are deduced,and the mass of that glueball is determined to be 2.0 GeV approximately.
文摘A new way to derive the formula of the dynamical temperature by using the invariance of the Liouville measure and the ergodicity hypothesis is presented, based on the invariance of the functional under the transformation of the measure. The obtained dynamical temperature is intrinsic to the underlying dynamics of the system. A molecular dynamical simulation of a one-dimensional many-body system in the Lennard-Jones model has been performed. The temperature calculated from the Hamiltonian for the stationary state of the system coincides with that determined with the thermodynamical method.
文摘The contribution of the fermion determinant to the gluon condensates at a finite temperature is calculated in the framework of the grand partition function for a w€ak-interacting instanton medium of a disordered phase.It is found that the temperature behavior of both chromomagnetic and chromoelectric gluon condensates depends sensitively on the flavor number.The more the flavors are,the faster the gluon condensates decrease.In the three-Havor case,the gluon condensates would be vanish(or the scale invariance would be restored)approximately at the temperature of 180 MeV.
基金Supported by the National Natural Science Foundation of China under Grant No.19475029.
文摘The first principle of quantum chromodynamics is used to calculate the static perturbative three-body potential between three valence quarks in baryons,which is gauge invariant and flavor-dependent,and of magnitude of the same order as the next non-leading static q-q potential.Its effect on an S-state baryon composed of three valence quarks of equal mass may be viewed as a slight increase of the constituent quark masses with respect to those in mesons.
