Some generalized scalar field models are presented. It is shown that there exist generally three types of soliton solutions for the extended models. The form of the first type of the soliton solutions is model-independent. An arbitrary constant can be included in the second type of the soliton excitations which is model-dependent. The third type of the soliton solutions is also model-dependent but with no arbitrary constant. The extended phi(4) model and sine-Gordon model are studied in detail.
机构:
Russian Acad Sci, VA Steklov Math Inst, Moscow 119991, Russia
Natl Res Nucl Univ MEPhI, Moscow 115409, RussiaRussian Acad Sci, VA Steklov Math Inst, Moscow 119991, Russia
机构:
China Univ Petr E China, Sch Math & Computat Sci, Dongying 257061, Shandong, Peoples R ChinaChina Univ Petr E China, Sch Math & Computat Sci, Dongying 257061, Shandong, Peoples R China