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Some Aspects of Soliton Unwindings. (1996)
Book Chapter
Piette, B., & Zakrzewski, W. (1996). Some Aspects of Soliton Unwindings. In B. Jancewicz, & J. Sobczyk (Eds.), From Field Theory to Quantum Groups: birthday volume dedicated to Jerzy Lukierski (275-285). World Scientific Publishing. https://doi.org/10.1142/9789812830425_0018

We investigate the unwindings of solitons as seen in many numerical simulations. We study a simple model in (2+1) dimensions which involves two scalar fields ø1, ø2 with an interaction term which favours the fields to lie on a unit circle (i.e. to sa... Read More about Some Aspects of Soliton Unwindings..

Classical and Quantum Mechanics of Free κ-Relativistic Systems. (1995)
Book Chapter
Zakrzewski, W., Lukierski, J., & Ruegg, H. (1995). Classical and Quantum Mechanics of Free κ-Relativistic Systems. In J. Lukierski, Z. Popowicz, & J. Sobczyk (Eds.), Quantum groups : formalism and applications : XXX Karpacz Winter School of Theoretical Physics, Karpacz, Poland, 14-26 February 1994 (539-554). Polish Scientific Publishers

We consider the Hamiltonian and Lagrangian formalism describing free κ-relativistic particles with their four-momenta constrained to the κ-deformed mass shell. We study the formalism with commuting as well as noncommuting (i.e., with nonvanishing Poi... Read More about Classical and Quantum Mechanics of Free κ-Relativistic Systems..

Multisolitons in a two-dimensional Skyrme Model (1995)
Journal Article
Piette, B., Schroers, B., & Zakrzewski, W. (1995). Multisolitons in a two-dimensional Skyrme Model. Zeitschrift für Physik. C, Particles and fields, C(65), 165-174