Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-Hermitian dislocation modes: Stability and melting across
  exceptional points   The traditional bulk-boundary correspondence assuring robust gapless modes at
the edges and surfaces of insulating and nodal topological materials gets
masked in non-Hermitian (NH) systems by the skin effect, manifesting an
accumulation of a macroscopic number of states near such interfaces. Here we
show that dislocation lattice defects are immune to the skin effect and as such
they support robust topological modes in the bulk of a NH system, specifically
when the underlying Hermitian phase features band inversion at a finite
momentum. However, the dislocation modes gradually lose their support at their
core when the system approaches an exceptional point, and finally melt into the
boundary of the system across the NH band gap closing. We explicitly
demonstrate these findings for a two-dimensional NH Chern insulator, thereby
establishing that dislocation lattice defects can be instrumental to
experimentally probe pristine NH topology.

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The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th