Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transverse flow induced by inhomogeneous magnetic fields in the Bjorken
  expansion   We investigate the magnetohydrodynamics in the presence of an external
magnetic field following the power-law decay in proper time and having spatial
inhomogeneity characterized by a Gaussian distribution in one of transverse
coordinates under the Bjorken expansion. The leading-order solution is obtained
in the weak-field approximation, where both energy density and fluid velocity
are modified. It is found that the spatial gradient of the magnetic field
results in transverse flow, where the flow direction depends on the decay
exponents of the magnetic field. We suggest that such a magnetic-field-induced
effect might influence anisotropic flow in heavy ion collisions.

33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys