4,739 research outputs found
U(1)_R mediation from the flux compactification in six dimensions
We consider a supersymmetric completion of codimension-two branes with
nonzero tension in a 6D gauged supergravity. As a consequence, we obtain the
football solution with 4D Minkowski space as a new supersymmetric background
that preserves 4D N=1 SUSY. In the presence of brane multiplets, we derive the
4D effective supergravity action for the football background and show that the
remaining modulus can be stabilized by a bulk non-perturbative correction with
brane uplifting potentials at a zero vacuum energy. We find that the U(1)_R
mediation can be a dominant source of SUSY breaking for a brane scalar with
nonzero R charge.Comment: 3 pages, no figures, to appear in the proceedings of the 16th
International Conference on Supersymmetry and the Unification of Fundamental
Interactions (SUSY-2008), Seoul, Korea, 16-21 June, 200
Meson Mass at Large Baryon Chemical Potential in Dense QCD
We reexamine the quark mass induced term in chiral Lagrangian in color-flavor
locking phase in dense QCD, and show that the meson mass term is determined by
three independent invariants under chiral-axial symmetry, and a meson mass is
given in terms of the quark mass, gap, and the chemical potential by
. Thus mesons
become massless as .Comment: 7 pages, no figures; made antiparticle gap explicit; to appear Phys.
Lett.
Mechanical Behaviors of Wire-woven Metals Composed of Two Different Thickness of Wires
AbstractWire-weaving is virtually only a practical method to fabricate multi-layered truss type cellular metals, except for stacking multiple single layered structures. To date, the wire-woven metals have been fabricated of wires of a uniform thickness. In this work, variations of wire-woven metals fabricated of two different thickness wires in out-of-plane and in-plane directions are introduced. The mechanical properties subjected to compressive or shear loading are investigated
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