Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2005-07-05
Physics
High Energy Physics
High Energy Physics - Theory
7 pages pdf file. Talk at PASCOS 2005 Symposium. Gyeongju, Korea. May 30 - June 4, 2005
Scientific paper
10.1063/1.2149702
Use of the AdS/CFT correspondence to arrive at phenomenological gauge field theories is discussed, focusing on the orbifolded case without supersymmetry. An abelian orbifold with the finite group Z_p can give rise to a G = U(N)^p gauge group with chiral fermions and complex scalars in different bi-fundamental representations of G. The naturalness issue is discussed, particularly the absence of quadratic divergences in the scalar propagator at one loop. This requires that the scalars all be in bi-fundamentals with no adjoints, coincident with the necessary and sufficient condition for presence of chiral fermions. Speculations are made concerning new gauge and matter particles expected soon to be pursued experimentally at the LHC.
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