Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stability of the Regular Hayward Thin-Shell Wormholes   The aim of this paper is to construct regular Hayward thin-shell wormholes
and analyze their stability. We adopt Israel formalism to calculate surface
stresses of the shell and check the null and weak energy conditions for the
constructed wormholes. It is found that the stress-energy tensor components
violate the null and weak energy conditions leading to the presence of exotic
matter at the throat. We analyze the attractive and repulsive characteristics
of wormholes corresponding to $a^r>0$ and $a^r<0$, respectively. We also
explore stability conditions for the existence of traversable thin-shell
wormholes with arbitrarily small amount of fluids describing cosmic expansion.
We find that the spacetime has non-physical regions which give rise to event
horizon for $0<a_{0}<2.8$ and the wormhole becomes non-traversable producing a
black hole. The non-physical region in the wormhole configuration decreases
gradually and vanishes for the Hayward parameter $l=0.9$. It is concluded that
the Hayward and Van der Waals quintessence parameters increase the stability of
thin-shell wormholes.

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The categories of this paper are: q-bio
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The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
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The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
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The categories of this paper are: quant-ph
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-ex