11,819 research outputs found
Gauged Clockwork Theory
We consider the gauged clockwork theory with a product of multiple
gauge groups and discuss the continuum limit of the theory to a massless gauged
with linear dilaton background in five dimensions. The localization of
the lightest state of gauge fields on a site in the theory space naturally
leads to exponentially small effective couplings of external matter fields
localized away from the site. We discuss the implications of our general
discussion with some examples, such as mediators of dark matter interactions,
flavor-changing -meson decays as well as D-term SUSY breaking.Comment: 22 pages, 2 figures, Expanded discussion on dark matter mediator, To
be published in Physics Letters
Softness of Supersymmetry Breaking on the Orbifold
We consider supersymmetry breaking due to a Scherk-Schwarz twist or localized
mass terms in 6d supersymmetric gauge theory compactified on the
orbifold . We show that the Scherk-Schwarz breaking in 6d is
equivalent to the localized breaking with mass terms along the lines in extra
dimensions. In the presence of the considered supersymmetry breaking, we find
that there arises a finite one-loop mass correction to a brane scalar due to
the KK modes of bulk gauge fields.Comment: JHEP style file of 16 pages, no figures, published versio
Gravity Mediation in 6d Brane-World Supergravity
We consider the gravity-mediated SUSY breaking within the effective theory of
six-dimensional brane-world supergravity. We construct the supersymmetric
bulk-brane action by Noether method and find the nontrivial moduli coupling of
the brane F- and D-terms. We find that the low energy Kahler potential is not
of sequestered form, so gravity mediation may occur at tree level. In moduli
stabilization with anomaly effects included, the scalar soft mass squared can
be positive at tree level and it can be comparable to the anomaly mediation.Comment: 4 pages, To appear in the proceeding of PASCOS 2005, Gyeongju, Korea,
May 30-June 4, 200
Gauge Coupling Unification in a 6D SO(10) Orbifold GUT
We consider the gauge coupling running in a six-dimensional SO(10) orbifold
GUT model. The bulk gauge symmetry is broken down to the standard model gauge
group with an extra U(1)_X by orbifold boundary conditions and the extra U(1)_X
is further broken through the U(1)_{B-L} breaking with bulk hyper multiplets.
We obtain the corrections of Kaluza-Klein massive modes to the running of the
gauge couplings and discuss their implication to the successful gauge coupling
unification.Comment: 10 pages, 2 figures, version to appear in Physics Letters
Flattening the inflaton potential beyond minimal gravity
We review the status of the Starobinsky-like models for inflation beyond
minimal gravity and discuss the unitarity problem due to the presence of a
large non-minimal gravity coupling. We show that the induced gravity models
allow for a self-consistent description of inflation and discuss the
implications of the inflaton couplings to the Higgs field in the Standard
Model.Comment: 5 pages, Prepared for the proceedings of the 13th International
Conference on Gravitation, 3-7 July 201
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