Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extended Lambda-Maxwell duality and related large class of dyonic and
  neutral exactly solvable 4D Einstein-Maxwell-dilaton models discovered   We report the discovered class of exact static solutions of several 4D
Einstein-Maxwell-dilaton systems: string-induced, Liouville, trigonometric,
polynomial, etc., for three basic topologies (spherical, hyperbolical and flat)
being uniformly treated. In addition to the usual electric-magnetic duality
this class obeys a certain extended duality between Maxwell-dilaton coupling
and dilaton mass. Though major solutions we obtain are dyonic, the class also
comprises interesting neutral models.
  As a by-product, we significantly succeded in resolving of the two important
problems, one of which has been standing more than a decade (system with the
string-inspired exponential Maxwell-dilaton coupling and non-vanishing dilaton
mass) and another one - gravity coupled to massive neutral scalar field:
generalized Liouville, Sin(h), Cos(h) - is about fifty years old.
  Finally, we demonstrate the full separability of the static EMD system and
publicize the simple procedure of how to generate new integrability classes.

24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: eess
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: q-fin
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The categories of this paper are: stat
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The categories of this paper are: comp-gas
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The categories of this paper are: q-bio