Artigo
D-oscillons in the standard model extension
Registro en:
Physical Review D, v. 91, n. 12, p. 1-8, 2015.
1550-7998
10.1103/PhysRevD.91.125021
WOS:000356405900006
6314084638411003
Autor
Correa, R. A. C.
Rocha, Roldão da
Souza Dutra, A. de [UNESP]
Resumen
In this work we investigate the consequences of the Lorentz symmetry violation on extremely long-lived, time-dependent, and spatially localized field configurations, named oscillons. This is accomplished for two interacting scalar field theories in (D + 1) dimensions in the context of the so-called standard model extension. We show that D-dimensional scalar field lumps can present a typical size R-min << R-KK, where R-KK is the extent of extra dimensions in Kaluza-Klein theories. The size R-min is shown to strongly depend upon the terms that control the LV of the theory. This implies either contraction or dilation of the average radius R-min, and a new rule for its composition, likewise. Moreover, we show that the spatial dimensions for existence of oscillating lumps have an upper limit, opening new possibilities to probe the existence of D-dimensional oscillons at TeV energy scale. In addition, in a cosmological scenario with Lorentz symmetry breaking, we show that in the early Universe with an extremely high energy density and a strong LV, the typical size R-min was highly dilated. As the Universe had expanded and cooled down, it then passed through a phase transition toward a Lorentz symmetry, wherein R-min tends to be compact. UFABC Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Univ Fed ABC, CCNH, BR-09210580 Sao Paulo, Brazil Univ Fed ABC, CMCC, BR-09210580 Sao Paulo, Brazil SISSA, Int Sch Adv Studies, I-34136 Trieste, Italy Univ Estadual Paulista, UNESP, BR-12516410 Sao Paulo, Brazil Univ Estadual Paulista, Faculdade de Engenharia de Guaratinguetá, Departamento de Física e Química, Guaratinguetá, Brazil CNPq: 303027/2012-6 CNPq: 473326/2013-2 CNPq: 451682/2015-7