Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum Aspects of Nonlocal Approach to the Cosmological Constant
  Problem   We have recently presented a manifestly local and general coordinate
invariant formulation of a nonlocal approach to the cosmological constant
problem which has been proposed by Carroll and Remmen. In this article, based
on our formulation, we investigate some quantum aspects of this approach to the
cosmological constant problem. In particular, we explicitly evaluate quantum
effects to the effective cosmological constant from matter fields at one-loop
level, and show that the effective cosmological constant receives radiative
corrections and is not stable against quantum corrections so that it must be
fine-tuned at every stage in the loop expansion. Next, we will propose a new
scale-invariant model of a nonlocal approach to the cosmological constant
problem, and show explicitly that in this new model the effective cosmological
constant is indeed stable against radiative corrections.

11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph