T. Arai et M. Tajiri, Resonance of breathers in one dimension: solutions to the nonlinear coupled Klein-Gordon equation, PHYS LETT A, 274(1-2), 2000, pp. 18-26
The two breathers solution to the nonlinear coupled Klein-Gordon equation i
s analyzed to show that the: breather resonances exist between them. There
are two types of singular interactions: one is the resonant interaction whe
re two breathers interact so as to make a new breather, the other is the ex
tremely long-range interaction where two breathers interact infinitely apar
t from each other. (C) 2000 Elsevier Science B.V. All rights reserved.