• [1]

    V.A.Kuzimin,V.A.Rubakov and M.E.Shaposhnikov,Phys.Lett.,B155(1985)36;M.Dine,O.Lechtenfeld et al,Nucl.Phys.,B342(1990)381.[2]L.Dolan and R.Jackiw,Phys.Rev.,D9(1974)3320;Sidney Coleman and Erick Weinberg,Phys.Rev.,D7(1973)1888.[3]Hou Defu and Li Jiarong,High Energy And Nuclear Physics,15(1991)207.[4]R.D.Pisarski,Physica,A158(1989)246;Phys.Rev.Lett.,63(1989)1129.[5]G.A.Camelia and So-YoungPi,Phys.Rev.,D46(1993)2356;M.E.Carrington,Phys.Rev.,D45(1992)2933.[6]Y.Fujimoto:R.Grigjanis,and R.Kobes,Prog.Theor.Phys.,73(1985)434;S.Weinberg,Phys.Rev.,D7(1973)2887.