86 research outputs found
One-loop Kaehler potential in 5D gauged supergravity with generic prepotential
We calculate one-loop contributions to the Kaehler potential in 4D effective
theory of 5D gauged supergravity (SUGRA) on S^1/Z_2 with a generic form of the
prepotential and arbitrary boundary terms. Our result is applicable to a wide
class of 5D SUGRA models. The derivation is systematically performed by means
of an N=1 superfield formalism based on the superconformal formulation of 5D
SUGRA. As an illustrative example, we provide an explicit expression of the
Kaehler potential in the case of 5D flat spacetime.Comment: 52 pages, typos correcte
Radion and Higgs masses in gauge-Higgs unification
We evaluate the radion and Higgs masses in the gauge-Higgs unification models
on the warped geometry, in which the modulus is stabilized by the Casimir
energy. We analyze the one-loop effective potential and clarify the dependences
of those masses on the Wilson line phase . The radion mass varies
1-30GeV for , while the Higgs mass is 150-200 GeV
and depends on only logarithmically. The radion couplings to the
standard model particles are sensitive to the warp factor, and are too small to
detect at colliders in the region where the five-dimensional description is
valid.Comment: 20 pages, 3 figures; text modified, references adde
Scherk-Schwarz twist in 5D conformal SUGRA
We reinterpret the Scherk-Schwarz (SS) boundary condition for SU(2)_R in a
compactified five-dimensional (5D) Poincare supergravity in terms of the
twisted SU(2)_U gauge fixing in 5D conformal supergravity. In such translation,
only the compensator hypermultiplet is relevant to the SS twist, and various
properties of the SS mechanism can be easily understood. Especially we show the
equivalence between the SS twist and boundary constant superpotentials at the
full supergravity level.Comment: 4 pages, no figure, talks given at SUSY 2006 (UC Irvine) and Summer
Institute 2006 (POSTECH), to appear in Proceedings of SUSY06, the 14th
International Conference on Supersymmetry and the Unification of Fundamental
Interactions, UC Irvine, California, 12-17 June 200
6D gauge-Higgs unification on T^2/Z_N with custodial symmetry
We investigate the gauge-Higgs unification models compactified on T^2/Z_N
that have the custodial symmetry. We select possible gauge groups, orbifolds
and representations of the matter fermions that are consistent with the
custodial symmetry, by means of the group theoretical analysis. The best
candidate we found is 6D SU(3)_C x U(4) gauge theory on T^2/Z_3 and the third
generation quarks are embedded into bulk fermions that are the symmetric
traceless rank-2 tensor of SO(6).Comment: 38 pages, 1 table, a reference adde
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