Warping, extra dimensions, and a slice of AdS{sub d}

Journal Article · Fri Jan 15 00:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.024006· OSTI ID:21409070

McDonald, Kristian L ^[1]

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1. Theory Group, TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T2A3 (Canada)

Inspired by the Randall-Sundrum framework we consider a number of phenomenologically relevant model-building questions on a slice of compactified AdS{sub d} for d>5. Such spaces are interesting as they enable one to realize the weak scale via warping. We perform the Kaluza-Klein (KK) reduction for gravitons and bulk vectors in these spaces, and for the case of AdS{sub 6} consider the KK spectrum of gauge scalars. We further obtain the KK towers for bulk fermions on a slice of AdS{sub 7} and AdS{sub 9} and show that the Randall-Sundrum approach to flavor generalizes to these spaces with the localization of chiral zero-mode fermions controlled by their bulk Dirac mass parameters. However, for the phenomenologically interesting case where the transverse radius is R{sup -1{approx}}TeV, we show that bulk standard model fields are not viable due to a resulting volume suppression of the gauge-coupling constants. A similar suppression occurs for the case of UV localization. Thus it seems that the standard model fields should be confined to the infrared brane in such spaces. Sterile fields and extended gauge sectors may propagate in the bulk, with the gauge-coupling volume suppression experienced by the latter motivating a weak coupling to standard model fields. We also discuss some issues regarding the effective 4D theory description in these spaces.

• OSTI ID: 21409070
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 2; Other Information: DOI: 10.1103/PhysRevD.81.024006; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTI DE SITTER SPACE
BRANES
CHIRALITY
COMPACTIFICATION
COUPLING
COUPLING CONSTANTS
FERMIONS
FLAVOR MODEL
GRAVITONS
KALUZA-KLEIN THEORY
MANY-DIMENSIONAL CALCULATIONS
MASS
SPECTRA
STANDARD MODEL
COMPOSITE MODELS
ELEMENTARY PARTICLES
FIELD THEORIES
GRAND UNIFIED THEORY
GRAVITATIONAL RADIATION
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATHEMATICAL SPACE
PARTICLE MODELS
PARTICLE PROPERTIES
POSTULATED PARTICLES
QUANTUM FIELD THEORY
QUARK MODEL
RADIATIONS
SPACE
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES