Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravity, Geometry and the Quantum   After a brief introduction, basic ideas of the quantum Riemannian geometry
underlying loop quantum gravity are summarized. To illustrate physical
ramifications of quantum geometry, the framework is then applied to homogeneous
isotropic cosmology. Quantum geometry effects are shown to replace the big bang
by a big bounce. Thus, quantum physics does not stop at the big-bang
singularity. Rather there is a pre-big-bang branch joined to the current
post-big-bang branch by a `quantum bridge'. Furthermore, thanks to the
background independence of loop quantum gravity, evolution is deterministic
across the bridge.

11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph