Condensed Matter Physics, 2006, vol. 9, No. 3(47), p. 459-471, English
DOI:10.5488/CMP.9.3.459
Title:
On the response of a system with bound states of particles to the
perturbation by the external electromagnetic field
Author(s):
 
| Yu.V.Slyusarenko
(Akhiezer Institute for Theoretical Physics, NSC KIPT,
1 Akademicheskaya str., 61108 Kharkiv, Ukraine)
,
|
 
| A.G.Sotnikov
(Akhiezer Institute for Theoretical Physics, NSC KIPT,
1 Akademicheskaya str., 61108 Kharkiv, Ukraine)
|
The response of the system, consisting of two types of
opposite-charged fermions and their bound states
(hydrogen-like atoms), to the perturbation by the external
electromagnetic field in low particle kinetic energies region
is studied. Investigations are based on using a new
formulation of the second quantization method that includes a
capability of forming the particle bound states [1].
Expressions for Green functions
that describe the system response to the external
electromagnetic field and take into account the presence of
particle bound states (atoms) are found. Macroscopic parameters
of the system, such as conductivity, permittivity and
magnetic permeability in terms of these Green
functions are found. As an example, the perturbation of the ideal
hydrogen-like plasma by the external electromagnetic field in
low temperature region is considered. Expressions for the
values are found that describe the ideal gas of hydrogen-like atoms
Bose-condensate response to the external
electromagnetic field.
Key words:
Green functions, bound states, response of systems,
low-temperature hydrogen-like plasma, conductivity, magnetic
permeability
PACS:
05.30.d, 05.30.Jp, 03.75.Mn, 03.75.Hh
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