Zobrazeno 1 - 10
of 56
pro vyhledávání: '"K. Z. Nobrega"'
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 12, Pp 1-22 (2020)
Abstract We study kink-antikink collisions in a particular case of the double sine-Gordon model depending on only one parameter r. The scattering process of large kink-antikink shows the changing of the topological sector. For some parameter interval
Externí odkaz:
https://doaj.org/article/ec05d00f5e6c4428886c2595a7735797
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 10, Pp 1-30 (2019)
Abstract We study the non-integrable 𝜙6 model on the half-line. The model has two topological sectors. We chose solutions from just one topological sector to fix the initial con ditions. The scalar field satisfies a Neumann boundary condition
Externí odkaz:
https://doaj.org/article/28c8ad141d6549f09945d3833a8b93ca
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 10, Pp 1-17 (2018)
Abstract In this work we consider kink-antikink and antikink-kink collisions in a modified ϕ 4 model with a false vacuum characterized by a dimensionless parameter ϵ. The usual ϕ 4 model is recovered for ϵ = 0. We investigate the ϵ ≪ 1 regime
Externí odkaz:
https://doaj.org/article/5260a338054246248ba5429b12184e12
Publikováno v:
IEEE Transactions on Electron Devices. 69:5787-5791
Publikováno v:
Physics Letters B, Vol 822, Iss, Pp 136707-(2021)
Physics Letters
Physics Letters
In this work we consider the scalar field model with a false vacuum proposed by Avelar et al. (2008) [27]. The model depends on a parameter s>0. The model has unstable nontopological lump solutions with a bell shape for small s, acquiring a flat plat
Publikováno v:
Microwave and Optical Technology Letters. 62:1423-1430
Publikováno v:
Physics Letters B, Vol 775, Iss, Pp 290-296 (2017)
Physics Letters B
Physics Letters B
In this work we investigate a Z 2 symmetric model of one scalar field ϕ in ( 1 , 1 ) dimension. The model is characterized by a continuous transition from a potential V ( ϕ ) with two vacua to the vacuumless case. The model has kink and antikink so
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 84:16-21
Ideal graphene is a gapless semiconductor consisting of a single layer of carbon atoms regularly arranged in a honeycomb lattice having infinite spatial extent in the ( x , y )-plane, in which electrons behave as Dirac massless fermions. Even neglect
Publikováno v:
Physica B: Condensed Matter. 495:89-93
Usually, charge and spin transport properties in tunnel junctions are studied in the DC bias regime and/or in the adiabatic regime of time-varying magnetic fields. In this letter, the temporal dynamics of charge and spin currents in a tunnel junction
Publikováno v:
Physics Letters
Physics Letters B, Vol 803, Iss, Pp-(2020)
Physics Letters B, Vol 803, Iss, Pp-(2020)
In this work we examine kink-antikink collisions in two distinct hyperbolic models. The models depend on a deformation parameter, which controls two main characteristics of the potential with two degenerate minima: the height of the barrier and the v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c773b2eaed9645390c813e50f7d4c921