2015-05-112015-05-11200803759601http://hdl.handle.net/11441/24819We study the collisions of moving breathers with the same frequency, traveling with opposite directions within a Klein–Gordon chain of oscillators. Two types of collisions have been analyzed: symmetric and non-symmetric, head-on collisions. For low enough frequency the outcome is strongly dependent of the dynamical states of the two colliding breathers just before the collision. For symmetric collisions, several results can be observed: breather generation, with the formation of a trapped breather and two new moving breathers; breather reflection; generation of two new moving breathers; and breather fusion bringing about a trapped breather. For non-symmetric collisions some possible results are: breather generation, with the formation of three new moving breathers; breather fusion, originating a new moving breather; breather trapping with breather reflection; generation of two new moving breathers; and two new moving breathers traveling as a bound state. Breather annihilation has never been observed.application/pdfenghttp://creativecommons.org/licenses/by-nc-nd/4.0/Discrete breathersMoving breathersBreather collisionsKlein–Gordon latticesinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess10.1016/j.physleta.2007.09.035https://idus.us.es/xmlui/handle/11441/24819