Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Topological non-symmorphic crystalline insulators   In this work, we identify a new class of Z2 topological insulator protected
by non-symmorphic crystalline symmetry, dubbed a "topological non-symmorphic
crystalline insulator". We construct a concrete tight-binding model with the
non-symmorphic space group pmg and confirm the topological nature of this model
by calculating topological surface states and defining a Z2 topological
invariant. Based on the projective representation theory, we extend our
discussion to other non-symmorphic space groups that allows to host topological
non-symmorphic crystalline insulators.

23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph