Condensons and bicondensons in one-dimensional systems
Journal Title: Semiconductor Physics, Quantum Electronics and Optoelectronics - Year 2018, Vol 21, Issue 3
Abstract
The paper is devoted to simulation of continual strong coupling condensons and bicondensons states in one-dimensional systems by using the Gaussian basis with exponentially correlated multipliers. To determine the accuracy of variational calculations, it has been shown that using the variational function consisting of a sum of 5 Gaussians reproduces the exact value of energy and wave function of the one-dimensional condenson with the accuracy of 7 and 5 significant digits, correspondingly. Analytical expressions for the effective functional of the one-dimensional bicondenson have been obtained. Variational calculations of singlet condenson ground state energy were carried out with simultaneous accounting of single-center correlations and correlations caused by a direct dependence of the bicondenson wave function on the distance between electrons. The graphical dependence of the bicondenson energy on the Coulomb repulsion parameter V C has been represented. The region of existence of bicondenson was determined as a function of electron-electron repulsion parameter V C ≤ V C * ≈ 5 . 4 . The one-center bicondenson model has been considered, and distribution of the two-electron probability density (squared wave function of bicondenson) in the region 2 ≤ V C has two maxima, the distance between which for V C = 2 is R m = 1.8567. This distribution of the probability density is associated with the low dimensionality of the system under consideration.
Authors and Affiliations
N. I. Kashirina
Keywords
Related Articles
- EP ID EP416024
- DOI 10.15407/spqeo21.03.231
- Views 82
- Downloads 0
Enhancing sensitivity of SPR sensors by using nanostructured Au chips coated with functional plasma polymer nanofilms
The sensitivity of surface plasmon resonance (SPR) sensors operating in the Kretschmann configuration was investigated using Au SPR chips with a nano-grating surface functionalized via deposition of a-C:H:O plasma polyme...
Protective applications of vacuum-deposited perfluoropolymer films
The paper summarizes in brief applications of perfluoropolymer thin films deposited from the gas phase by several different methods, for protection of various materials and devices both at the research stage and already...
Electrical and dielectrical properties of composites based on (Ag1–xCux)7GeS5I mixed crystals
Polymer composites were prepared from (Ag 1–x Cu x ) 7 GeS 5 I mixed crystals grown using Bridgman–Stockbarger method. The impedance measurements were performed at room temperature in the frequency range 10 –3 –2·10 6 Hz...
Influence of Li-TCNQ impurities on dielectric properties of planar-oriented nematic liquid crystal
The dielectric properties of planar-oriented nematic liquid crystal E25M with Li-TCNQ impurities have been investigated within the frequency range 10 –1 ...10 6 Hz and temperatures 298...343 K. The concentration of impur...
The role of magnetic component of a strong light field in electrostrictive effect
Electrostriction forces during laser ablation have been studied both theoretically and experimentally. The components of electroctrostriction force for inhomogeneous electromagnetic field near a substrate were proposed t...