Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Is the cosmological constant an eigenvalue?   We propose to reinterpret Einstein's field equations as a nonlinear
eigenvalue problem, where the cosmological constant $\Lambda$ plays the role of
the (smallest) eigenvalue. This interpretation is fully worked out for a simple
model of scalar gravity. The essential ingredient for the feasibility of this
approach is that the classical field equations be nonlinear, i.e., that the
gravitational field is itself a source of gravity. The cosmological
consequences and implications of this approach are developed and discussed.

31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math