Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nature does not play dice at the Planck scale   We start from classical general relativity coupled to matter fields. Each
configuration variable and its conjugate momentum, as also space-time points,
are raised to the status of matrices [equivalently operators]. These matrices
obey a deterministic Lagrangian dynamics at the Planck scale. By
coarse-graining this matrix dynamics over time intervals much larger than
Planck time, one derives quantum theory as a low energy emergent approximation.
If a sufficiently large number of degrees of freedom get entangled, spontaneous
localisation takes place, leading to the emergence of classical space-time
geometry and a classical universe. In our theory, dark energy is shown to be a
large-scale quantum gravitational phenomenon. Quantum indeterminism is not
fundamental, but results from our not probing physics at the Planck scale.

1
The categories of this paper are: cs
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th