Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic reconnection: from MHD to QED   The paper examines the prospects of using laser plasmas for studying novel
regimes of the magnetic field line reconnection and charged particle
acceleration. Basic features of plasma dynamics in the three-dimensional
configurations relevant to the formation of current sheets in a plasma are
addressed by analyzing exact self-similar solutions of the
magneto-hydrodynamics and electron magneto-hydrodynamics equations. Then the
magnetic field annihilation in the ultrarelativistic limit is considered, when
the opposite polarity magnetic field is generated in collisionless plasma by
multiple laser pulses, in the regime with a dominant contribution of the
displacement current exciting a strong large-scale electric field. This field
leads to the conversion of the magnetic energy into the kinetic energy of
accelerated particles inside a thin current sheet. Charged particle
acceleration during magnetic field reconnection is discussed when radiation
friction and quantum electrodynamics effects become dominant.

28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
1
The categories of this paper are: cs