Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraints on Neutrino Mixing   We explore the implications of imposing the constraint that two neutrino
flavors (which for definiteness we take to be the mu and tau neutrinos) are
similarly coupled to the mass basis in addition to the unitarity constraints.
We allow three active and an arbitrary number of sterile neutrinos. We show
that in this scheme one of the mass eigenstates decouples from the problem,
reducing the dimension of the flavor space by one.

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The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
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The categories of this paper are: eess
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The categories of this paper are: comp-gas
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat