Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transition between random and periodic electron currents on a DNA chain   By resorting to a model inspired to the standard Davydov and
Holstein-Fr\"ohlich models, in the present paper we study the motion of an
electron along a chain of heavy particles modelling a sequence of nucleotides
proper to a DNA fragment. Starting with a model Hamiltonian written in second
quantization, we use the Time Dependent Variational Principle to work out the
dynamical equations of the system. It is found that under the action of an
external source of energy transferred to the electron, and according to the
excitation site, the electron current can display either a broad frequency
spectrum or a sharply peaked frequency spectrum. This sequence-dependent charge
transfer phenomenology is suggestive of a potentially rich variety of
electrodynamic interactions of DNA molecules under the action of electron
excitation. This could imply the activation of interactions between DNA and
transcription factors, or between DNA and external electromagnetic fields.

12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex