444 citations · 2.6k across the 93 of their papers we have counts for
6 papers · 1 filter
Clustering and decomposition for non BPS solutions of the models
S. Bolognesi, W. Zakrzewski
We look at solutions (both BPS and non-BPS) of the model on (with twisted boundary conditions), in particular by using a conformal mappi…
Numerical and analytical tests of quasi-integrability in modified Sine-Gordon models
L. A. Ferreira, Wojtek J. Zakrzewski
Following our attempts to define quasi-integrability in which we related this concept to a particular symmetry of the two-soliton function we check this condition in three classes…
The concept of quasi-integrability
L. A. Ferreira, G. Luchini, Wojtek J. Zakrzewski
We show that certain field theory models, although non-integrable according to the usual definition of integrability, share some of the features of integrable theories for certain…
A Skyrme-like model with an exact BPS bound
L. A. Ferreira, Wojtek J. Zakrzewski
We propose a new Skyrme-like model with fields taking values on the sphere S^3 or, equivalently, on the group SU(2). The action of the model contains a quadratic kinetic term plus…
Some aspects of self-duality and generalised BPS theories
C. Adam, L. A. Ferreira, E. da Hora +2
If a scalar field theory in (1+1) dimensions possesses soliton solutions obeying first order BPS equations, then, in general, it is possible to find an infinite number of related f…
Nonstandard approach to gravity for the dark sector of the Universe
P. C. Stichel, W. J. Zakrzewski
We summarize the present state of research on the darkon fuid as a model for the dark sector of the Universe. Nonrelativistic massless particles are introduced as a realization of…