Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observable Consequences of a Scalar Boson Coupled only to Neutrinos   We have examined the consequences of assuming the existence of a light scalar
boson, weakly coupled to neutrinos, and not coupled to any other light
fermions. For a range of parameters, we find that this hypothesis leads to the
development of neutrino clusters which form in the early Universe and which
provide gravitational fluctuations on scales small compared to a parsec (i.e.,
the scale of solar systems). The existence of such clustering produces an
effect which would appear as a negative mass squared for the electron neutrino
in Tritium beta decay, without conflicting with other experiments. The neutrino
masses arising in unified gauge theories would then be very much larger than
the masses extracted from experiments within the solar system.

30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom