F. Zimmerschied et Hjw. Mullerkirsten, UNSTABLE PERIODIC-SOLUTIONS TO THE SEXTIC MODEL IN ONE SPATIAL DIMENSION, Physical review. D. Particles and fields, 49(10), 1994, pp. 5387-5392
Solutions to the sextic model With a nonzero first integration constan
t are constructed and interpreted as sphalerons. Inversion of the sext
ic potential leads to both sphalerons and bounces on the circle within
the same model.