Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comments on Thermometer Effect -- Origin of the Mixed Alkali Effect in
  Glass Relaxation by Y.Yu et al. [Phys.Rev.Lett. 119, 095501 (2017)]   Comments on paper 'Thermometer Effect: Origin of the Mixed Alkali Effect in
Glass Relaxation' by Y.Yu et al. published by Physical Review Letters

18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph