Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Calabi-Yau compactifications of non-supersymmetric heterotic string
  theory   Phenomenological explorations of heterotic strings have conventionally
focused primarily on the E8xE8 theory. We consider smooth compactifications of
all three ten-dimensional heterotic theories to exhibit the many similarities
between the non-supersymmetric SO(16)xSO(16) theory and the related
supersymmetric E8xE8 and SO(32) theories. In particular, we exploit these
similarities to determine the bosonic and fermionic spectra of Calabi-Yau
compactifications with line bundles of the non-supersymmetric string. We use
elements of four-dimensional supersymmetric effective field theory to
characterize the non-supersymmetric action at leading order and determine the
Green-Schwarz induced axion-couplings. Using these methods we construct a
non-supersymmetric Standard Model(SM)-like theory. In addition, we show that it
is possible to obtain SM-like models from the standard embedding using at least
an order four Wilson line. Finally, we make a proposal of the states that live
on five branes in the SO(16)xSO(16) theory and find under certain assumptions
the surprising result that anomaly factorization only admits at most a single
brane solution.

35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
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The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: supr-con
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The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat