Modulus stabilization in a non-flat warped braneworld scenario

Banerjee, Indrani (0000 0001 2188 427Xgrid.452759.8, Department of Astrophysics and Cosmology, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake City, 700106, Kolkata, India) ; SenGupta, Soumitra (0000 0001 1093 3582grid.417929.0, Department of Theoretical Physics, Indian Association for the Cultivation of Science, 2A and 2B Raja S C Mullick Road, 700032, Kolkata, India)

03 May 2017

Abstract: The stability of the modular field in a warped brane world scenario has been a subject of interest for a long time. Goldberger and Wise (GW) proposed a mechanism to achieve this by invoking a massive scalar field in the bulk space-time neglecting the back-reaction. In this work, we examine the possibility of stabilizing the modulus without bringing about any external scalar field. We show that instead of flat 3-branes as considered in Randall–Sundrum (RS) warped braneworld model, if one considers a more generalized version of warped geometry with de Sitter 3-brane, then the brane vacuum energy automatically leads to a modulus potential with a metastable minimum. Our result further reveals that in this scenario the gauge hierarchy problem can also be resolved for an appropriate choice of the brane’s cosmological constant.

Published in: EPJC 77 (2017) 277
Published by: Springer/Società Italiana di Fisica
DOI: 10.1140/epjc/s10052-017-4857-y
License: CC-BY-3.0

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