Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entanglement in the quantum phases of an unfrustrated Rydberg atom array   We report on the ground state phase diagram of interacting Rydberg atoms in
the unfrustrated square lattice array. Using new tensor network algorithms, we
scale to large systems in two dimensions while including all long-range
interactions, revealing the phases in the bulk and their analogs in accessible
finite arrays. We find a greatly altered phase diagram from earlier numerical
and experimental studies, and in particular, we uncover an emergent entangled
quantum nematic phase that appears in the absence of frustration. Broadly our
results yield a conceptual guide for future experiments, while our techniques
provide a blueprint for converging numerical studies in other lattices.

28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex