13 papers · 1 filter
Skyrmions, Rational Maps & Scaling Identities
E. G. Charalampidis, T. A. Ioannidou, N. S. Manton
Starting from approximate Skyrmion solutions obtained using the rational map ansatz, improved approximate Skyrmions are constructed using scaling arguments. Although the energy imp…
The Non-Compact Weyl Equation
Anastasia Doikou, Theodora Ioannidou
A non-compact version of the Weyl equation is proposed, based on the infinite dimensional spin zero representation of the sl_2 algebra. Solutions of the aforementioned equation are…
The Energy of Scattering Solitons in the Ward Model
T. Ioannidou, N. S. Manton
The energy density of a scattering soliton solution in Ward's integrable chiral model is shown to be instantaneously the same as the energy density of a static multi-lump solution…
An Improved Harmonic Map Ansatz
Theodora Ioannidou, Burkhard Kleihaus, Wojtek Zakrzewski
The rational map ansatz of Houghton et al \cite{HMS} is generalised by allowing the profile function, usually a function of , to depend also on and . It is shown th…
Universality in a Class of Q-Ball Solutions: An Analytic Approach
T. A. Ioannidou, A. Kouiroukidis, N. D. Vlachos
The properties of Q-balls in the general case of a sixth order potential have been studied using analytic methods. In particular, for a given potential, the initial field value tha…
Energy-Charge Dependence for Q-Balls
T. A. Ioannidou, V. B. Kopeliovich, N. D. Vlachos
We show that many numerically established properties of Q-balls can be understood in terms of analytic approximations for a certain type of potential. In particular, we derive an e…