Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New analytic models of traversable wormholes   The analytic solution of the general relativity equations for spherically
symmetric wormholes are given. We investigate the special case of a
"traversable" wormhole i.e., one allowing the signal to pass through it. The
energy-momentum tensor of wormhole matter is represented as a superposition of
a spherically symmetric magnetic field and dust matter with negative matter
density. The dynamics of the model are investigated. We discuss both the
solution of the equation with a Lambda-term and without it. Superposing enough
dust matter, a magnetic field, and a Lambda-term can produce a static solution,
which turns out to be a spherical Multiverse model with an infinite number of
wormholes connected spherical universes. Corresponding solution can be static
and dynamic.

4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th