82 citations · 655 across the 39 of their papers we have counts for
36 papers · 1 filter
Unified theory of oscillons and modes
F. Blaschke, T. Romanczukiewicz, K. Slawinska +1
We show that an oscillon can be understood as a localized discrete resonant (non-normalizable) mode. Specifically, oscillon in the vacuum arises from the threshold mode, which beca…
Oscillons and bubbles in -ball dynamics
D. Canillas Martínez, P. Dorey, T. Romańczukiewicz +3
We show that, in the thin-wall regime, -ball--anti--ball collisions reveal chaotic behaviour. This is explained by the resonant energy transfer mechanism triggered by the int…
Excited oscillons and charge-swapping
A. Alonso-Izquierdo, D. Canillas Martínez, T. Romańczukiewicz +2
We show that the charge-swapping phenomenon can be understood as a real valued oscillon carrying an excitation in imaginary direction in the target space. Furthermore, we introduce…
Q-ball polarization -- a smooth path to oscillons
F. Blaschke, T. Romanczukiewicz, K. Slawinska +1
We show that in the complex theory the oscillon, together with its spectral structure and the amplitude modulation, arises from the exited Q-ball carrying the bound and the q…
Oscillons from -balls through renormalization
F. Blaschke, T. Romańczukiewicz, K. Sławińska +1
Using a renormalization-inspired perturbation expansion we show that oscillons in a generic field theory in (1+1) dimensions arise as dressed -balls of a universal (up to the le…
Normal Modes of the Small-Amplitude Oscillon
Jarah Evslin, Tomasz Romanczukiewicz, Katarzyna Slawinska +1
Consider a classical (1+1)-dimensional oscillon of small amplitude . To all orders in , the oscillon solution is exactly periodic. We study small perturbations of such period…
Amplitude modulations and resonant decay of excited oscillons
F. Blaschke, T. Romańczukiewicz, K. Sławińska +1
We show that the decay of strongly excited oscillons in a single vacuum model reveals a chaotic, fractal-like pattern very much like one found in kink-antikink collision in the $ϕ^…
Oscillons in gapless theories
P. Dorey, T. Romanczukiewicz, Y. Shnir +1
We show that large scale oscillons, i.e., quasi-periodic, long living particle like solutions, may exist in massless theories, too. Their existence is explained using an effective…
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…
Quantum Oscillons May be Long-Lived
Jarah Evslin, Tomasz Romańczukiewicz, Andrzej Wereszczyński
Hertzberg has constructed a quantum oscillon that decays into pairs of relativistic mesons with a power much greater than the radiation from classical oscillon decay. This result i…
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…
Collisions of weakly-bound kinks in the Christ-Lee model
Patrick Dorey, Anastasia Gorina, Tomasz Romańczukiewicz +1
We investigate soliton collisions a one-parameter family of scalar field theories in 1+1 dimensions which was first discussed by Christ and Lee. The models have a sextic potential…
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…
Spectral Walls at One Loop
Jarah Evslin, Chris Halcrow, Tomasz Romanczukiewicz +1
A spectral wall is a surface in a moduli space of classically BPS solitons where an internal excitation crosses the continuum mass threshold. It has recently been shown that spectr…
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,…
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…