Graviton Kaluza-Klein modes in nonflat branes with stabilized modulus

Tanmoy Paul and Soumitra SenGupta
Phys. Rev. D 93, 085035 – Published 27 April 2016

Abstract

We consider a generalized two brane Randall-Sundrum model where the branes are endowed with nonzero cosmological constant. In this scenario, we re-examine the modulus stabilization mechanism and the nature of Kaluza-Klein (KK) graviton modes. Our result reveals that while the KK mode graviton masses may change significantly with the brane cosmological constant, the Goldberger-Wise stabilization mechanism, which assumes a negligible backreaction on the background metric, continues to hold even when the branes have a large cosmological constant. The possibility of having a global minimum for the modulus is also discussed. Our results also include an analysis for the radion mass in this nonflat brane scenario.

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  • Received 28 January 2016

DOI:https://doi.org/10.1103/PhysRevD.93.085035

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Tanmoy Paul* and Soumitra SenGupta

  • Department of Theoretical Physics, Indian Association for the Cultivation of Science, 2A and 2B Raja S.C. Mullick Road, Kolkata 700 032, India

  • *tpap@iacs.res.in
  • tpssg@iacs.res.in

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Issue

Vol. 93, Iss. 8 — 15 April 2016

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