论文标题
QCD和规则的核子参数的磁场依赖性
Magnetic field dependence of nucleon parameters from QCD sum rules
论文作者
论文摘要
有限能量QCD总规则涉及核子电流相关因子在存在外部，均匀，大磁场的情况下确定几个QCD和HADRONIC参数。 The continuum hadronic threshold $s_0$, nucleon mass $m_N$, current-nucleon coupling $λ_N$, transverse velocity $v_\perp$, the spin polarization condensate $\langle\bar qσ_{12} q\rangle$, and the magnetic susceptibility of the quark condensate $χ_q$, are obtained for the case of protons和中子。由于磁场和光夸克的电荷不对称性，所有获得的数量随着磁场，每个核子或夸克风味都以不同的方式演变而来。通过这种方法，可以将上述参数的演变达到磁场强度$ eb <1.4 $ gev $^2 $。
Finite energy QCD sum rules involving nucleon current correlators are used to determine several QCD and hadronic parameters in the presence of an external, uniform, large magnetic field. The continuum hadronic threshold $s_0$, nucleon mass $m_N$, current-nucleon coupling $λ_N$, transverse velocity $v_\perp$, the spin polarization condensate $\langle\bar qσ_{12} q\rangle$, and the magnetic susceptibility of the quark condensate $χ_q$, are obtained for the case of protons and neutrons. Due to the magnetic field, and charge asymmetry of light quarks up and down, all the obtained quantities evolve differently with the magnetic field, for each nucleon or quark flavor. With this approach it is possible to obtain the evolution of the above parameters up to a magnetic field strength $eB < 1.4$ GeV$^2$.
