https://doi.org/10.1140/epjc/s10052-019-7519-4
Regular Article - Theoretical Physics
Scattering of compactlike structures
1
Departamento de Física, Universidade Federal da Paraíba, João Pessoa, PB, 58051-900, Brazil
2
Instituto de Física, Departamento de Física Teórica, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, CEP 20550-013, Brazil
3
Departamento de Ciências, Universidade Federal da Paraíba, João Pessoa, PB, 58051-900, Brazil
* e-mail: hahuga@gmail.com
Received:
15
October
2019
Accepted:
28
November
2019
Published online:
11
December
2019
We investigate the collision of a new class of topological defects that tends to become compact as a control parameter increases to larger and larger values. These new compactlike defects have, in general, more than one internal discrete mode depending on the value of the control parameter and, as usual, there is a critical velocity above which the defects escape after the collision. We noticed that below the critical velocity there are the windows of escape presenting fractal structure. An interesting novelty is the appearance of metastable structures with the formation of compactlike defects, maintaining a fixed distance from each other. Another new feature is the formation of boosted localized distributions of the scalar field which we called moving oscillons. These oscillons carry away almost all scalar field energy producing a complete disruption of the compactlike defects. The pattern of the moving oscillons depends on the control parameter, and becomes more complex as we increase its value. We conjecture that the new effects may be connected with the presence of more than one vibrational mode in the spectrum of the stability potential of the model under investigation.
© The Author(s), 2019
