Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Background Independent Field Quantization with Sequences of
  Gravity-Coupled Approximants   We outline, test, and apply a new scheme for nonpertubative analyses of
quantized field systems in contact with dynamical gravity. While gravity is
treated classically in the present paper, the approach lends itself for a
generalization to full Quantum Gravity. We advocate the point of view that
quantum field theories should be regularized by sequences of quasi-physical
systems comprising a well defined number of the field's degrees of freedom. In
dependence on this number, each system backreacts autonomously and
self-consistently on the gravitational field. In this approach, the limit which
removes the regularization automatically generates the physically correct
spacetime geometry, i.e., the metric the quantum states of the field prefer to
"live" in. We apply the scheme to a Gaussian scalar field on maximally
symmetric spacetimes, thereby confronting it with the standard approaches. As
an application, the results are used to elucidate the cosmological constant
problem allegedly arising from the vacuum fluctuations of quantum matter
fields. An explicit calculation shows that the problem disappears if the
pertinent continuum limit is performed in the improved way advocated here. A
further application concerns the thermodynamics of de Sitter space where the
approach offers a natural interpretation of the micro-states that are counted
by the Bekenstein-Hawking entropy.

34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math