Zobrazeno 1 - 10
of 286
pro vyhledávání: '"Piette, B."'
We study the mechanical response of an open cell dry foam subjected to periodic forcing using experiments and theory. Using the measurements of the static and dynamic stress-strain relationship, we derive an over-damped model of the foam, as a set of
Externí odkaz:
http://arxiv.org/abs/1210.6229
We show that polarons can sustain loop-like configurations in flexible bio-polymers and that the size of the loops depend on both the flexural rigidity of the polymer and the electron-phonon coupling constant. In particular we show that for single st
Externí odkaz:
http://arxiv.org/abs/1204.0906
Autor:
Nelmes, S. G., Piette, B. M. A. G.
The Skyrme model is a low energy, effective field theory for QCD which when coupled to a gravitational field provides an ideal semi-classical model to describe neutron stars. We use the Skyrme crystal solution composed of a lattice of $\alpha$-like p
Externí odkaz:
http://arxiv.org/abs/1204.0910
Polarons, introduced by Davydov to explain energy transport in $\alpha$-helices, correspond to electrons localised on a few lattice sites because of their interaction with phonons. While the static polaron field configurations have been extensively s
Externí odkaz:
http://arxiv.org/abs/1108.3694
Autor:
Lin, W. T., Piette, B.
Publikováno v:
Phys.Rev.D77:125028,2008
We study the vibration modes of the Skyrme model within the rational map ansatz. We show that the vibrations of the radial profiles and the rational maps are decoupled and we consider explicitly the case B=1, B=2 and B=4. We then compare our results
Externí odkaz:
http://arxiv.org/abs/0804.4786
Autor:
Piette, B., Zakrzewski, W. J.
We analyse the scattering of sine-Gordon breathers on a square potential well. We show that the scattering process depends not only on the vibration frequency of the breather and its incoming speed but also on its phase as well as the depth and width
Externí odkaz:
http://arxiv.org/abs/0710.4391
Publikováno v:
J.Phys.Conf.Ser.128:012027,2008
We present a general review of the dynamics of topological solitons in 1 and 2 dimensions and then discuss some recent work on the scattering of various solitonic objects (such as kinks and breathers etc) on potential obstructions.
Comment: base
Comment: base
Externí odkaz:
http://arxiv.org/abs/0709.3919
Autor:
Piette, B. M. A. G., Probert, G. I.
Publikováno v:
Phys.Rev.D75:125023,2007
We investigate the large baryon number sector of the Einstein-Skyrme model as a possible model for baryon stars. Gravitating hedgehog skyrmions have been investigated previously and the existence of stable solitonic stars excluded due to energy consi
Externí odkaz:
http://arxiv.org/abs/0704.0527
Autor:
Piette, B., Zakrzewski, W. J.
Publikováno v:
J.Phys.A40:5995-6010,2007
We study the scattering properties of Sine Gordon kinks on obstructions in the form of finite size potential `wells'. We model this by making the coefficient of the $\cos(\phi)-1$ term in the Lagrangian position dependent. We show that when the kinks
Externí odkaz:
http://arxiv.org/abs/hep-th/0611040
Autor:
Piette, B., Zakrzewski, W. J.
Publikováno v:
J.Phys.A40:329-346,2007
We analyse the scattering of a two-dimensional soliton on a potential well. We show that this soliton can pass through the well, bounce back or become trapped and we study the dependence of the critical velocity on the width and the depth of the well
Externí odkaz:
http://arxiv.org/abs/hep-th/0610095