Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Is the Cosmological Constant Non-Zero?   There is a discussion of the temperature anisotropy of the cosmic background
radiation and of how the first Doppler peak depends on the different
contributions to the vacuum energy density. An analytic calculation agrees well
with numerical studies and shows that the l-value of the peak depends almost
entirely on the geometry of the geodesics since recombination, and not
sensitively on the details of the photon-baryon accoustic waves prior to the
last scattering. This, and supernovae observations, suggest the cosmological
constant is not zero.

36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an