Results 71 to 80 of about 626 (115)

On the dynamics of topological solitons [PDF]

, 1995
This thesis investigates the dynamics of lump-like objects in non-integrable field theories, whose stability is due to topological considerations. The work concerns three different low dimensional ((1 + 1)- and (2 + l)-dimensional) systems and addresses ...
Speight, J.M, Speight, James Martin
core  

Generalized virial identities: radial constraints for solitons, instantons, and bounces

Journal of High Energy Physics
We derive a continuous family of virial identities for O(n) symmetric configurations, parameterized by an exponent α that controls the radial weighting.
Jonathan Lozano-Mayo
doaj   +1 more source

On extended structures in affine Toda field theory [PDF]

, 1996
Two areas of affine Toda field theory are explored in this thesis. First the introduction of a boundary into the real coupling affine Toda field theory.
Harder, Ulrich Karl Priedrich
core  

The twistor description of integrable systems [PDF]

, 1991
The theory of twistors and the theory of integrable models have, for many years, developed independently of each other. However, in recent years it has been shown that there is considerable overlap between these two apparently disparate areas of ...
Strachan, Ian Alexander Becket
core  

Domain walls in a non-linear S 2 $$ {\mathbb{S}}^2 $$ -sigma model with homogeneous quartic polynomial potential

Journal of High Energy Physics, 2018
In this paper the domain wall solutions of a Ginzburg-Landau non-linear S 2 $$ {\mathbb{S}}^2 $$ -sigma hybrid model are exactly calculated. There exist two types of basic domain walls and two families of composite domain walls. The domain wall solutions
A. Alonso-Izquierdo, A. J. Balseyro Sebastián, M. A. González León   +2 more
doaj   +1 more source

Quantization of Skyrmions [PDF]

, 2006
The Skyrme model is a nonlinear classical field theory which models the strong interaction between atomic nuclei. In order to compare the predictions of the Skyrme model with nuclear physics, it has to be quantized. We show, summarizing earlier work, how
Krusch, Steffen
core  

Instanton liquid properties from lattice QCD

Journal of High Energy Physics, 2018
We examined the instanton contribution to the QCD configurations generated from lattice QCD for N F = 0, N F = 2 + 1 and N F = 2 + 1 + 1 dynamical quark flavors from two different and complementary approaches.
A. Athenodorou, Ph. Boucaud, F. De Soto, J. Rodríguez-Quintero, S. Zafeiropoulos   +4 more
doaj   +1 more source

Constrained instantons in scalar field theories

Journal of High Energy Physics
Instantons, localised saddle points of the action, play an important role in describing non-perturbative aspects of quantum field theories, for example vacuum decay or violation of conservation laws associated with anomalous symmetries.
Benjamin Elder, Kinga Gawrych, Arttu Rajantie   +2 more
doaj   +1 more source

Vibrational modes of massive Skyrmions within the rational map ansatz [PDF]

, 2007
In this thesis, we study the vibrational modes of some Skyrmion solutions within the rational map approximation. When the Skyrme field is perturbed around a static solution, the radial and angular vibrations of the field are decoupled; this gives us two ...
Lin, Wen-Tsan
core  

JNR Skyrmions

Journal of High Energy Physics
The JNR ansatz provides a simple formula to obtain families of charge N self-dual SU(2) Yang-Mills instantons in four-dimensional Euclidean space, from the free data of N + 1 distinct points with associated positive weights.
Paul Sutcliffe
doaj   +1 more source