Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dark Energy from Inspiraling in Field Space   We find an exact solution of the equations of motion of a two-field
cosmological model, which realizes multi-field dark energy. The latter is
characterized by field-space trajectories with turning rates that are always
large. We study a class of two-field models and show that it is possible to
have such trajectories, giving accelerated space-time expansion, even when the
scalar potential preserves the rotational invariance of the field-space metric.
For the case of Poincar\'e-disk field space, we derive the form of the scalar
potential compatible with such background solutions and, furthermore, we find
the exact solutions analytically. Their field-space trajectories are spirals
inward, toward the center of the Poincar\'e disk. Interestingly, the functional
form of the relevant scalar potential is compatible with a certain hidden
symmetry, although the latter is broken by the presence of a constant term.

10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat