Zobrazeno 1 - 9
of 9
pro vyhledávání: '"João G. F. Campos"'
Autor:
João G. F. Campos, Azadeh Mohammadi
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 2, Pp 1-13 (2024)
Abstract We construct initial configurations for the scattering between kinks with long-range tails. For this purpose, we exploit kink solutions in the presence of Bogomol’nyi-Prasad-Sommerfield (BPS)-preserving impurities. This approach offers a h
Externí odkaz:
https://doaj.org/article/3ef23143e68640f592566a2e0ce24ed3
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-25 (2023)
Abstract We investigate kink-antikink collisions in a model characterized by two scalar fields in the presence of geometric constrictions. The model includes an auxiliary function that modifies the kinematics associated with one of the two fields. An
Externí odkaz:
https://doaj.org/article/30670f0d4afd443cbd7fc9b2b9f2c19b
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 5, Pp 1-20 (2023)
Abstract We studied kink-antikink collisions in (1+1)-dimensional spacetime for all Z 2 symmetric ϕ 8 models with four degenerate minima. Such a polynomial model has only one free parameter, allowing us to conduct an exhaustive analysis. We performe
Externí odkaz:
https://doaj.org/article/08b67ae44df7496a852cc57aec6af83f
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 12, Pp 1-20 (2022)
Abstract We investigate generalizations of the ϕ 4 and sine-Gordon models, including interactions with Dirac Fermions. We observe new resonance phenomena by taking the fermion back-reaction into account. First, we show that the vibrational mode resp
Externí odkaz:
https://doaj.org/article/1495090373d64db6af898f97ee53a473
Autor:
João G. F. Campos, Azadeh Mohammadi
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 9, Pp 1-20 (2021)
Abstract We study the collision of a kink and an antikink in the double sine-Gordon model with and without the excited vibrational mode. In the latter case, we find that there is a limited range of the parameters where the resonance windows exist, de
Externí odkaz:
https://doaj.org/article/6a4f9fcf3b904740baed4b37f3c2e74f
Autor:
João G. F. Campos, Azadeh Mohammadi
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 9, Pp 1-19 (2021)
Abstract The system consisting of a fermion in the background of a wobbling kink is studied in this paper. To investigate the impact of the wobbling on the fermion-kink interaction, we employ the time-dependent perturbation theory formalism in quantu
Externí odkaz:
https://doaj.org/article/f7487d3c4eab4607a8b9b34f1a86c39f
Autor:
João G. F. Campos, Azadeh Mohammadi
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 5, Pp 1-15 (2020)
Abstract We study excitations and collisions of kinks in a scalar field theory where the potential has two minima with $$Z_2$$ Z2 symmetry. The field potential is designed to create a square well potential in the stability equation of the kink excita
Externí odkaz:
https://doaj.org/article/11b63025e7544eceaf19b4512a28f36c
Autor:
Azadeh Mohammadi, João G. F. Campos
Publikováno v:
Physics Letters
Physics Letters B, Vol 818, Iss, Pp 136361-(2021)
Physics Letters B, Vol 818, Iss, Pp 136361-(2021)
We explore a class of $\phi^{4n}$ models with kink and antikink solutions that have long-range tails on both sides, specializing to the cases with $n=2$ and $n=3$. A recently developed method of an accelerating kink ansatz is used to estimate the for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0572a3d420162626a0fd3660e624c3ab
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Autor:
João G. F. Campos, Azadeh Mohammadi
Publikováno v:
Physical Review
We study a fermion field coupled to a scalar via a Yukawa term. The scalar field is the $\phi^4$ model with an impurity that preserves half of the BPS property. We analyze the spectrum of the defects of the model and collisions between them both clos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91b295857599b174a8e55b2f42e0a1b5
http://repo.scoap3.org/api
http://repo.scoap3.org/api