Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Aftershocks following crash of currency exchange rate: The case of
  RUB/USD in 2014   The dynamical behavior of the currency exchange rate after its large-scale
catastrophe is discussed through a case study of the rate of Russian rubles to
US dollars after its crash in 2014. It is shown that, similarly to the case of
the stock market crash, the relaxation is characterized by a power law, which
is in analogy with the Omori-Utsu law for earthquake aftershocks. The
waiting-time distribution is found to also obey a power law. Furthermore, the
event-event correlation is discussed, and the aging phenomenon and scaling
property are observed. Comments are made on (non-)Markovianity of the
aftershock process and on a possible relevance of glassy dynamics to the market
system after the crash.

11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc