THE TWO-BOSON SCATTERING PHASE SHIFTS IN THE GENERAL $\phi$6 THEORY WITH THE GAUSSIAN WAVE-FUNCTIONAL APPROACH
LU WEN-FA (卢文发)a, XU BO-WEI (许伯威)b, ZHANG YU-MEI (章豫梅)c
a Department of Physics, Fudan University, Shanghai 200433, China; b Department of Physics, Shanghai Jiaotong University, Shanghai 200030, China; c Department of Physics, Tongji University, Shanghai 200092, China
Abstract The two-particle scattering phase shifts with a $\lambda\phi^4+\xi\phi^6$ interaction are com-puted in (1 + 1) and (2 + 1) dimensions using the Gaussian wave-functional approach.Through numerical analysis, we give the phase-shift curves with respect to the scat-tering energy for most cases of this theory. In (1 + 1) and (2 + 1 ) dimensions, for the symmetry vacuum the phase shifts are positive or negative depending on the signs of the renormalized parameter, while for the asymmetric vacuum the phase shifts are negative.
Received: 19 July 1995
Accepted manuscript online:
PACS:
11.10.Lm
(Nonlinear or nonlocal theories and models)
Fund: Project supported by the National Natural Science Foundation of China.
Cite this article:
LU WEN-FA (卢文发), XU BO-WEI (许伯威), ZHANG YU-MEI (章豫梅) THE TWO-BOSON SCATTERING PHASE SHIFTS IN THE GENERAL $\phi$6 THEORY WITH THE GAUSSIAN WAVE-FUNCTIONAL APPROACH 1996 Acta Physica Sinica (Overseas Edition) 5 481
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