Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coexistence of Multifold and Multidimensional Topological Phonons in
  KMgBO$_{3}$   Topological interpretations of phonons facilitate a new platform for novel
concepts in phonon physics. Though there are ubiquitous set of reports on
topological electronic excitations, the same for phonons are extremely limited.
Here, we propose a new candidate material, KMgBO 3 , which showcase the
co-existence of several multifold and multidimensional topological phonon
excitations, which are protected by spatial and non-spatial symmetries. This
includes zero dimensional double, triple and quadratic Weyl phonon nodes, one
dimensional nodal line/loop and two dimensional doubly degenerate nodal surface
states. Nodal line/loop emerges from the spin- 12 phonon nodes, while the two
dimensional doubly degenerate nodal surface arises from a combination of two
fold screw rotational and time reversal symmetries. Application of strain
breaks the C 3 rotational symmetry, which annihilates the spin-1 double Weyl
nodes, but preserves other topological features. Interestingly, strain helps to
create two extra single Weyl nodes, which in turn preserve the total chirality.
Alloying also breaks certain symmetries, destroying most of the topological
phonon features in the present case. Thus, KMgBO 3 is a promising candidate
which hosts various Weyl points, large Fermi arcs with a very clean phonon
spectra and tunable topological phonon excitations, and hence certainly worth
for future theoretical/experimental investigation of topological phononics.

6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int