Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Fermion Mass Hirerachies in MSSM-like Quiver Models with Stringy
  Corrections   Using instanton effects, we discuss the problem of fermion mass hierarchies
in an MSSM-like Type IIA orientifolded model with U(3)xSp(1)xU(1)xU(1) gauge
symmetry obtained from intersecting D6-branes. In the corresponding four-stack
quiver, the different scales of the generated superpotential couplings offer a
partial solution to fermion mass hierarchies. Using the known data with
neutrino masses m_{v_{\tau}}\lesssim 2 eV, we give the magnitudes of the
relevant scales.

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The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph