Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Squeezed Neutrino Oscillations in Quantum Field Theory   By resorting to recent results on fermion mixing which show that the Fock
space of definite flavor states is unitarily inequivalent to the Fock space of
definite mass states, we discuss the phenomenological implications on the
neutrino oscillation formula. For finite momentum the oscillation amplitude is
depressed, or "squeezed", by a momentum dependent factor. In the relativistic
limit the conventional oscillation formula is recovered.

11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex