Natl Lab Heavy Ion Accelerator Lanzhou, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
; Guangxi Univ, Dept Phys, Nanning 530004, Peoples R China
; Guangxi Univ Technol, Dept Informat & Comp Sci, Liuzhou 545006, Peoples R China
Based on the Pomeron exchange model, elastic production of phi meson in electron-proton interaction is investigated with both linear and non-linear Pomeron trajectories. The numerical calculations of the differential cross section for e+p -> e' + p + phi are performed. The theoretical predictions show that the dependence of the differential cross section on virtual photon virtuality, Q(2), is of moderation, the change of the energy scale parameter so causes moderate effect on the differential cross section, and the linear trajectory is a good approximation to non-linearity of the Pomeron trajectory, in particular, at small momentum transfer region vertical bar t vertical bar <= 0.2 GeV2.