Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2239
Title: Higher curvature quantum gravity and large extra dimensions
Authors: Demir, Durmuş Ali
Tanyıldızı, Şükrü Hanif
Keywords: Einstein gravity
Arkani-Hamed–Dvali–Dimopoulos (ADD)
Phenomenological theory (Physics)
Large extra dimensions
Issue Date: Feb-2006
Publisher: Elsevier Ltd.
Source: Demir, D. A., and Tanyıldızı, Ş. H. (2006). Higher curvature quantum gravity and large extra dimensions. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 633(2-3), 368-374. doi:10.1016/j.physletb.2005.12.014
Abstract: We discuss effective interactions among brane matter induced by modifications of higher dimensional Einstein gravity via the replacement of Einstein-Hilbert term with a generic function f(R) of the curvature scalar R. After deriving the graviton propagator, we analyze impact of virtual graviton exchanges on particle interactions, and conclude that f(R) gravity effects are best probed by high-energy processes involving massive gauge bosons, heavy fermions or the Higgs boson. We perform a comparative analysis of the predictions of f(R) gravity and of Arkani-Hamed-Dvali-Dimopoulos (ADD) scenario, and find that the former competes with the latter when f″(0) is positive and comparable to the fundamental scale of gravity in higher dimensions. In addition, we briefly discuss graviton emission from the brane as well as its decays into brane-localized matter, and find that they hardly compete with the ADD expectations. Possible existence of higher-curvature gravitational interactions in large extra spatial dimensions opens up various signatures to be confronted with existing and future collider experiments.
URI: http://doi.org/10.1016/j.physletb.2005.12.014
http://hdl.handle.net/11147/2239
ISSN: 0370-2693
0370-2693
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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