Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum Imploding Scalar Fields   The d'Alembertian $\Box\phi=0$ has solution $\phi=f(v)/r$, where $f$ is a
function of a null coordinate $v$, and this allows creation of a divergent
singularity out of nothing. In scalar-Einstein theory a similar situation
arises both for the scalar field and also for curvature invariants such as the
Ricci scalar. Here what happens in canonical quantum gravity is investigated.
Two minispace Hamiltonian systems are set up: extrapolation and approximation
of these indicates that the quantum mechanical wavefunction can be finite at
the origin.

12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
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The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat