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Constant Curvature 3-branes in 5-D f(R) Bulk. (arXiv:2310.16309v1 [hep-th])

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Braneworld models remain the most promising candidates to address several
important questions in low-energy particle phenomenology and cosmology. The
role of the moduli field(s) and its stabilization is an integral part of this
question. In this work, we show that a 5-dimensional warped braneworld model
with higher curvature gravity in bulk admits de-Sitter and anti de-Sitter
solutions on the branes. The remarkable feature of having a positive vacuum
energy on the visible brane is the presence of a metastable minimum and a
global minimum for the modulus potential. While the metastable minimum leads to
a consistent cosmological model of a bouncing universe, the concomitant
existence of the global minimum provides a vacuum for the modulus to roll down
to stability. Further, this model is shown to be consistent with the swampland
conjecture to qualify as a viable candidate in the low energy description of
string landscape

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