Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Radiative Effects on the Chiral Square   We consider general field theories in six dimensions, with two of the
dimensions compactified on a T_{2}/Z_{4} orbifold. Six-dimensional Weyl
fermions propagating on this background give rise to a chiral zero-mode, which
makes them interesting for phenomenological applications. The compact
two-dimensional space is flat and has three conical singularities. We consider
the one-loop structure of these theories, and show that the presence of
logarithmic divergences requires the introduction of counterterms precisely at
these three singular points. We also show that the corresponding localized
operators are rotationally symmetric in the plane of the two extra dimensions,
as expected from the geometry about the singularities. We derive the
propagators for spin-0, spin-1/2 and spin-1 fields in momentum space, in such a
way that the appropriate boundary conditions are satisfied. This allows us to
efficiently calculate loop diagrams in any given model. We give general
expressions for the mass splittings among Kaluza-Klein modes within a given
level. Our results can also be used to obtain interesting KK-parity preserving
interactions among Kaluza-Klein modes. We pay special attention to the
components of six-dimensional gauge fields that transform as scalars under the
four-dimensional Lorentz group. These states provide a characteristic signature
for these scenarios. In particular, we find that they can easily be the
lightest particles in the Kaluza-Klein spectrum.

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The categories of this paper are: q-alg
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The categories of this paper are: mtrl-th
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The categories of this paper are: ao-sci
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The categories of this paper are: funct-an
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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: nlin
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The categories of this paper are: nucl-ex
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The categories of this paper are: chem-ph
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The categories of this paper are: stat
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The categories of this paper are: econ
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The categories of this paper are: adap-org
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ex
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-th