Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Well-Tempered Cosmological Constant: Fugue in B$^\flat$   Zero point fluctuations of quantum fields should generate a large
cosmological constant energy density in any spacetime. How then can we have
anything other than de Sitter space without fine tuning? Well tempering --
dynamical cancellation of the cosmological constant using degeneracy within the
field equations -- can replace a large cosmological constant with a much lower
energy state. Here we give an explicit mechanism to obtain a Minkowski
solution, replacing the cosmological constant with zero, and testing its
attractor nature and persistence through a vacuum phase transition. We derive
the general conditions that Horndeski scalar-tensor gravity must possess, and
evolve in a fugue of functions, to deliver nothing and make the universe be
flat.

30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio