Chiral fermions in a spacetime with multiple warping

Koley, Ratna; Mitra, Joydip; SenGupta, Soumitra

doi:10.1103/physrevd.78.045005

Cited by 22 publications

(25 citation statements)

References 47 publications

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“…Fermions on branes have been studied in a number of articles such as in Refs. [44,45,46,47,48,49,50,51,52,53,54]. In this section let us investigate whether spin 1/2 fermions can be localized on the thick brane given in previous section.…”

Section: Fermion Localization and Resonances On The De Sitter Thmentioning

confidence: 99%

Fermion localization and resonances on a de Sitter thick brane

et al. 2009

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In arXiv:0901.3543, the simplest Yukawa coupling ηΨφχΨ was considered for a two-scalargenerated Bloch brane model. Fermionic resonances for both chiralities were obtained, and their appearance is related to branes with internal structure. Inspired on this result, we investigate the localization and resonance spectrum of fermions on a one-scalar-generated dS thick brane with a class of scalar-fermion couplings ηΨφ k Ψ with positive odd integer k. A set of massive fermionic resonances for both chiralities are obtained when provided large couple constant η. We find that the masses and life-times of left and right chiral resonances are almost the same, which demonstrates that it is possible to compose massive Dirac fermions from the left and right chiral resonances.The resonance with lower mass has longer life-time. For a same set of parameters, the number of resonances increases with k and the life-time of the lower level resonance for larger k is much longer than the one for smaller k.

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Section: Fermion Localization and Resonances On The De Sitter Thmentioning

confidence: 99%

Fermion localization and resonances on a de Sitter thick brane

et al. 2009

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“…Some of these are formulated by placing the standard model fields inside the bulk. For these models the localization property of a bulk fermion field on the brane [48][49][50][51][52][53][54][55] has been a subject of great interest to explore the chiral nature of massless fermions and also the hierarchical masses of fermions among different generations [54]. In this context, it is observed that the overlap of the bulk fermion wave function on our visible brane plays a crucial role in determining the effective radion-fermion coupling, which in turn determines the phenomenology of the radion with brane matter fields.…”

Section: Introductionmentioning

confidence: 99%

Fermion localization in higher curvature and scalar–tensor theories of gravity

Mitra¹,

Paul

SenGupta

2017

Eur. Phys. J. C

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It is well known that, in a braneworld model, the localization of fermions on a lower dimensional submanifold (say a TeV 3-brane) is governed by the gravity in the bulk, which also determines the corresponding phenomenology on the brane. Here we consider a five dimensional warped spacetime where the bulk geometry is governed by higher curvature like F(R) gravity. In such a scenario, we explore the role of higher curvature terms on the localization of bulk fermions which in turn determines the effective radion-fermion coupling on the brane. Our result reveals that, for appropriate choices of the higher curvature parameter, the profiles of the massless chiral modes of the fermions may get localized near the TeV brane, while those for massive Kaluza-Klein (KK) fermions localize towards the Planck brane. We also explore these features in the dual scalar-tensor model by appropriate transformations. The localization property turns out to be identical in the two models. This rules out the possibility of any signature of massive KK fermions in TeV scale collider experiments due to higher curvature gravity effects.

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“…Study of fermion and gauge fields localization on topological defects have been extensively studied with co-dimension one [20][21][22][23][24][25][26][27] and two [28][29][30][31][32][33][34][35][36][37]. Many years ago, particle localization on a domain wall in higher dimensional space time was already addressed [38,39].…”

Section: Introductionmentioning

confidence: 99%

Localizing modes of massive fermions and a U(1) gauge field in the inflating baby-Skyrmion branes

Delsate

Sawado

2012

Phys. Rev. D

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We consider the six dimensional brane world model, where the brane is described by a localized solution to the baby-Skyrme model extending in the extradimensions. The branes have a cosmological constant modeled by inflating four dimensional slices and we further consider a bulk cosmological constant. We focus on the topological number three solutions and discuss the localization mechanism of the fermions on the above 3-branes. We discuss interpretation of the model in term of quark third generation mass and in terms of the inflation history. We argue that the model can describe various epochs of the early universe by suitably choosing the parameters. We further discuss the localization properties of gauge fields on the brane and argue that this is achieved only for specific values of the electromagnetic coupling, providing a quantization to the electric charge.

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Chiral fermions in a spacetime with multiple warping

Cited by 22 publications

References 47 publications

Fermion localization and resonances on a de Sitter thick brane

Fermion localization and resonances on a de Sitter thick brane

Fermion localization in higher curvature and scalar–tensor theories of gravity

Localizing modes of massive fermions and a U(1) gauge field in the inflating baby-Skyrmion branes

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