Some comments on BPS systems.
FERREIRA, Luiz Agostinho; KLIMAS, P.; WERESZCZYNSKI, A.; ZAKRZEWSKI, W. J.
FERREIRA, Luiz Agostinho; KLIMAS, P.; WERESZCZYNSKI, A.; ZAKRZEWSKI, W. J.
 Abstract: We look at simple BPS systems involving more than one field. We discuss the conditions that have to be imposed on various terms in the Lagrangians involving many fields to produce BPS systems and then look in more detail at the simplest of such cases. We analyse in detail BPS systems involving two interacting sine-Gordon like fields, both when one of them has a kink solution and the second one either a kink or an antikink solution. We take their solitonic static solutions and use them as initial conditions for their evolution in Lorentz covariant versions of such models. We send these structures towards themselves and find that when they interact weakly they can pass through each other with a phase shift which is related to the strength of their interaction. When they interact strongly they repel each and reflect on each other. We use the method of modified gradient flow in order to visualize the solutions in the space of fields. | |
| Journal of Physics A |
| v. 52, n. 31, p. 315201-1-315201-23 - Ano: 2019 |
| Fator de Impacto: 2,110 |
| http://dx.doi.org/10.1088/1751-8121/ab2ae6 |  @article={002951977,author = {FERREIRA, Luiz Agostinho; KLIMAS, P.; WERESZCZYNSKI, A.; ZAKRZEWSKI, W. J.},title={Some comments on BPS systems},journal={Journal of Physics A},note={v. 52, n. 31, p. 315201-1-315201-23},year={2019}} |
