82 citations · 436 across the 19 of their papers we have counts for
19 papers
Sphaleron without shape mode and its oscillon
K. Oles, J. Queiruga, T. Romanczukiewicz +1
We find that an oscillon can possess a characteristic double oscillation structure even though it results in a decay of a sphaleron which does not have any positive energy vibratio…
Semi-BPS sphaleron and its dynamics
A. Alonso-Izquierdo, S. Navarro-Obregón, K. Oles +3
We construct a simple field theory in which a sphaleron, i.e., a saddle-point particle-like solution, forms a semi-BPS state with a background defect that is an impurity. This mean…
Relativistic Moduli Space and critical velocity in kink collisions
C. Adam, D. Ciurla, K. Oles +2
We analyze the perturbative Relativistic Moduli Space approach, where the amplitudes of the Derrick modes are promoted to collective coordinates. In particular, we analyse the poss…
Constrained instantons and kink-antikink collisions
C. Adam, A. García Martín-Caro, M. Huidobro +3
We show that constrained instantons, combined with the Relativistic Moduli Space approach, can accurately describe kink-antikink collisions in the model.
Moduli space with a boundary
C. Adam, K. Oles, T. Romanczukiewicz +1
We find that for various solitonic processes the corresponding canonical moduli space can have a boundary which is accessible in a finite time evolution. We show that such a bounda…
Multikink scattering in the model revisited
C. Adam, P. Dorey, A. Garcia Martin-Caro +5
Antikink-kink ( ) collisions in the model exhibit resonant scattering although the kinks do not support any bound states to which energy could b…
Spectral walls in antikink-kink scattering in the model
C. Adam, K. Oles, T. Romanczukiewicz +1
We show that thick spectral walls exist in antikink-kink collisions in the model. In this model, they are triggered by the so-called which do not exist…
Relativistic Moduli Space for Kink Collisions
C. Adam, N. S. Manton, K. Oles +2
The moduli space approximation to kink dynamics permits a relativistic generalization if the Derrick scaling parameter is used as a collective coordinate. We develop a perturbative…
Sphalerons and resonance phenomenon in kink-antikink collisions
C. Adam, D. Ciurla, K. Oles +2
We show that in some kink-antikink (KAK) collisions sphalerons, i.e., unstable static solutions - rather than the asymptotic free soliton states - can be the source of the internal…
Collective coordinate model of kink-antikink collisions in theory
N. S. Manton, K. Oles, T. Romanczukiewicz +1
The fractal velocity pattern in symmetric kink-antikink collisions in theory is shown to emerge from a dynamical model with two effective moduli, the kink-antikink separation…
Spectral walls in multifield kink dynamics
C. Adam, K. Oles, T. Romanczukiewicz +2
We show that spectral walls are common phenomena in the dynamics of kinks in (1+1) dimensions. They occur in models based on two or more scalar fields with a nonempty Bogomol'nyi-P…
Incompressible topological solitons
C. Adam, C. Naya, K. Oles +3
We discover a new class of topological solitons. These solitons can exist in a space of infinite volume like, e.g., , but they cannot be placed in any finite volume,…
The Dielectric Skyrme model
C. Adam, K. Oles, A. Wereszczynski
We consider a version of the Skyrme model where both the kinetic term and the Skyrme term are multiplied by field-dependent coupling functions. For suitable choices, this "dielectr…
Background fields and self-dual Skyrmions
C. Naya, K. Oles
We show that a suitable background field can bring a non-BPS topological soliton into its BPS, self-dual, counterpart. As an example we consider Skyrmions in the minimal Skyrme mod…
Kink-antikink collisions in a weakly interacting model
C. Adam, K. Oles, T. Romanczukiewicz +1
We study kink-antikink scattering in a one-parameter variant of the theory where the model parameter controls the static intersoliton force. We interpolate between the limit…
Kink-antikink scattering in the model without static intersoliton forces
C. Adam, K. Oles, T. Romanczukiewicz +1
Kink-antikink scattering in the model is investigated in the limit when the static inter-soliton force vanishes. We observe the formation of spectral walls and, further, iden…
Solvable self-dual impurity models
C. Adam, K. Oles, J. M. Queiruga +2
We find a family of (half) self-dual impurity models such that the self-dual (BPS) sector is exactly solvable, for any spatial distribution of the impurity, both in the topological…
Spectral Walls in Soliton Collisions
C. Adam, K. Oles, T. Romanczukiewicz +1
During defect-antidefect scattering, bound modes frequently disappear into the continuous spectrum before the defects themselves collide. This leads to a structural, nonperturbativ…
Domain walls that do not get stuck on impurities
C. Adam, K. Oles, T. Romanczukiewicz +1
We present a field theoretical model which allows for domain walls that do not get stuck on impurities. For this purpose, we consider a generalized chiral magnet domain wall action…