Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Backreaction to wormhole by classical scalar field: Will classical
  scalar field destroy wormhole?   There are two effects of extra matter fields on the Lorentzian traversable
wormhole. The ``primary effect'' says that the extra matter can afford to be a
part of source or whole source of the wormhole when the wormhole is being
formed. Thus the matter does not affect the stability of wormhole and the
wormhole is still safe. If the extra matter is extotic, it can be the whole
part of the source of the wormhole.
  The ``auxiliary effect'' is that the extra matter plays the role of the
additional matter to the stably-existed wormhole by the other exotic matter.
This additional matter will change the geometry of wormhole enough to prevent
from forming the wormhole by backreaction. In the minimally coupled massless
scalar field case, the self-consistent solution was found. The backreaction of
the scalar field can dominate the exotic matter part so that it will hinder the
formation of the wormhole.

1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex