Zobrazeno 1 - 10
of 1 067
pro vyhledávání: '"A. Wereszczynski"'
Publikováno v:
Physics Letters B, Vol 847, Iss , Pp 138300- (2023)
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 discrete vibrational mode (shape mode). We show that dynamics of such an oscil
Externí odkaz:
https://doaj.org/article/4eb92115479b41469c06d859ef7ea91a
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 1, Pp 1-19 (2023)
Abstract We show that a spectral wall, i.e., an obstacle in the dynamics of a bosonic soliton, which arises due to the transition of a normal mode into the continuum spectrum, exists after coupling the original bosonic model to fermions. This spectra
Externí odkaz:
https://doaj.org/article/b6e3ce00c7124ba38a890e02d6f8d2bd
Publikováno v:
Physics Letters B, Vol 838, Iss , Pp 137728- (2023)
We show that constrained CP1 instantons, combined with the Relativistic Moduli Space approach, can accurately describe kink-antikink collisions in the ϕ4 model.
Externí odkaz:
https://doaj.org/article/59d6add31e724797b541143fa443727c
Publikováno v:
Physics Letters B, Vol 836, Iss , Pp 137611- (2023)
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 boundary is not a failure of the moduli space approach but has a physical me
Externí odkaz:
https://doaj.org/article/3d6647f71e40479eab89e6e901c311ea
Using a renormalization-inspired perturbation expansion we show that oscillons in a generic field theory in (1+1)-dimensions arise as dressed Q-balls of a universal (up to the leading nonlinear order) complex field theory. This theory reveals a close
Externí odkaz:
http://arxiv.org/abs/2410.24109
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 8, Pp 1-26 (2021)
Abstract 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-Prasad-Sommerfield (BPS) sector, hosting two zero modes, whe
Externí odkaz:
https://doaj.org/article/1f46d49d38d14f3cab461d18ce4b37ce
Consider a classical (1+1)-dimensional oscillon of small amplitude $\epsilon$. To all orders in $\epsilon$, the oscillon solution is exactly periodic. We study small perturbations of such periodic configurations. These perturbations are themselves pe
Externí odkaz:
http://arxiv.org/abs/2409.15661
Autor:
Alonso-Izquierdo, A., Martinez, D. Canillas, Sanchez, C. Garzon, Leon, M. A. Gonzalez, Wereszczynski, A.
The defect-type solutions of a deformed $O(2N+1)$ linear sigma model with a real and $N$ complex fields in $(1+1)$-dimensional Minkowski spacetime are studied. All the solutions are analytically found for the $N=2$ case. Two types of solitons have be
Externí odkaz:
http://arxiv.org/abs/2407.13225
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 7, Pp 1-27 (2019)
Abstract We find supersymmetric extensions of the half-BPS soliton-impurity models in (1+1) dimensions which preserve half of the N $$ \mathcal{N} $$ = 1 supersymmetry. This is related to the fact that in the bosonic sector (i.e., the half-BPS solito
Externí odkaz:
https://doaj.org/article/5425df451bd24e0bb78dd3e16044382e
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 7, Pp 1-25 (2019)
Abstract 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 topologically trivial case and for kink (or antikink) configurations. Th
Externí odkaz:
https://doaj.org/article/cee3b45273a24ff787c3964fa7068849