Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: All order effective action for charge diffusion from Schwinger-Keldysh
  holography   An effective action for diffusion of a conserved $U(1)$ charge is derived to
all orders in the derivative expansion within a holographic model dual to the
Schwinger-Keldysh closed time path. A systematic approach to solution of the 5D
Maxwell equations in a doubled Schwarzschild-AdS$_5$ black brane geometry is
developed. Constitutive relation for the stochastic charge current is shown to
have a term induced by thermal fluctuations (coloured noise). All transport
coefficient functions parameterising the effective action and constitutive
relations are computed analytically in the hydrodynamic expansion, and then
numerically for finite momenta.

37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics