Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A note on the stability of Morris-Thorne wormholes   Two critical issues in the study of Morris-Thorne wormholes concerns the
stability of such structures, as well as their compatibility with quantum field
theory. This note discusses an important subset characterized by zero tidal
forces. It is shown that such wormholes (1) are in stable equilibrium using a
criterion based on the Tolman-Oppenheimer-Volkoff (TOV) equation and (2) are
not in direct conflict with quantum field theory.

37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin