Univ Alberta, Inst Theoret Phys, Edmonton, AB T6G 2J1, Canada; TRIUMF, Vancouver, BC V6T 2A3, Canada; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要:
The screening length in a quark-gluon plasma, the dispersion relations of thermal gluon self-energy and the quark potential at high temperature are studied within the thermo field dynamics framework. By calculating the real and imaginary parts, of the gluon self-energy in one-loop order in thermo field dynamics, we obtain an expression for the screening length in a quark-gluon plasma and the dispersion relation between the real and imaginary parts. At high temperature, using photon exchange between electron-positron in a skeleton expansion and ladder approximation, the screened Coulomb potential and an expression for the screened quark potential is obtained.
Zhao, WY,Khanna, FC. Screening length, dispersion relations and quark potential in thermo field dynamics[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2002,17(21):2911-2923.
