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- W1483402609 abstract "In this paper we investigate the localization and mass spectra of various matter �elds with spin 0, 1 and 1=2 on a thick brane generated by pure 4D and 5D positive cosmological constants without bulk scalarelds. For spin 0 scalar and spin 1 vector �elds, the potentials of the Kaluza{Klein (KK) modes in the corresponding Schrodinger equations are modied Poschl{Teller potentials, which lead to the localization of the scalar and vector zero modes on the brane as well as to mass gaps in the mass spectra. For spin 1=2 fermions, we introduce the bulk mass term MF(z)� �� in the action and four dirent cases are investigated. Localization of the massless left{chiral fermion zero mode is feasible for just two cases of F(z). In therst one we obtain Schrodinger equations with modied Poschl{Teller potentials with the corresponding mass gaps for both left{ and right{chiral fermions, the number of massive KK bound states is finite (determined by the ratio M=b) and is the same for left{ and right{chiral modes. In the second case we get a family of solutions with an infinite number of bound states where the mass spectra for left{ and right{chiral KK fermion modes are discrete. A special case resembles the one{dimensional quantum harmonic oscillator problem. For both of these cases, the mass spectrum of right{chiral fermions is shifted with respect to the mass spectrum of the left{chiral ones." @default.
- W1483402609 created "2016-06-24" @default.
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- W1483402609 date "2011-03-12" @default.
- W1483402609 modified "2023-09-27" @default.
- W1483402609 title "Localization of bulk matter fields on a pure de Sitter thick braneworld" @default.
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