Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fat Gravitons, the Cosmological Constant and Sub-millimeter Tests   We revisit the proposal that the resolution of the Cosmological Constant
Problem involves a sub-millimeter breakdown of the point-particle approximation
for gravitons. No fundamental description of such a breakdown, which
simultaneously preserves the point-particle nature of matter particles, is yet
known. However, basic aspects of the self-consistency of the idea, such as
preservation of the macroscopic Equivalence Principle while satisfying quantum
naturalness of the cosmological constant, are addressed in this paper within a
Soft Graviton Effective Theory. It builds on Weinberg's analysis of soft
graviton couplings and standard heavy particle effective theory, and minimally
encompasses the experimental regime of soft gravity coupled to hard matter. A
qualitatively distinct signature for short-distance tests of gravity is
discussed, bounded by naturalness to appear above approximately 20 microns.

14
The categories of this paper are: math-ph
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
18
The categories of this paper are: econ
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th