Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Wheeler-Dewitt Metric and the Attractivity of Gravity   We investigate the class of ultralocal metrics on the configuration space of
canonical gravity. It is described by a parameter $\alpha$, where $\alpha=0.5$
corresponds to general relativity.
  For $\alpha$ less than a critical value the signature is positive definite,
while for all other values it is indefinite. We show that in the positive
definite case gravity becomes repulsive. From the primordial helium abundance
we find that $\alpha$ must lie between $0.4$ and $0.55$.

9
The categories of this paper are: nlin
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th