%0 Journal Article
%T Braneworlds in f(Q) gravity
%A Silva, J. E. G.
%A Maluf, R. V.
%A Olmo, G. J.
%A Almeida, C. A. S.
%J Physical Review D
%D 2022
%V 106
%N 2
%I Amer Physical Soc
%@ 2470-0010
%G English
%F Silva_etal2022
%O WOS:000880673200004
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5410), last updated on Fri, 25 Nov 2022 08:32:27 +0000
%X We propose a braneworld scenario in a modified symmetric teleparallel gravitational theory, where the dynamics for the gravitational field is encoded in the nonmetricity tensor rather than in the curvature. Assuming a single real scalar field with a sine-Gordon self-interaction, the generalized quadratic nonmetricity invariant Q controls the brane width while keeping the shape of the energy density. By considering power corrections of the invariant Q in the gravitational Lagrangian, the sine-Gordon potential is modified exhibiting new barriers and false vacuum. As a result, the domain wall brane obtains an inner structure, and it undergoes a splitting process. In addition, we also propose a nonminimal coupling between a bulk fermion field and the nonmetricity invariant Q. Such geometric coupling leads to a massless chiral fermion bound to the 3-brane and a stable tower of nonlocalized massive states.
%R 10.1103/PhysRevD.106.024033
%U https://arxiv.org/abs/2203.05720
%U https://doi.org/10.1103/PhysRevD.106.024033
%P 024033-15pp