MODEL OF BINDING ALPHA-PARTICLES AND STRUCTURE OF THE LIGHT NUCLEI

The model of light nuclei built from alpha particles is considered from the point of view of quasimolecular structure. Some properties of nuclei like binding energy, rotational bands and even Bose-Einstein condensation have simple semiclassical explanation in the framework of this model.

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NEW INSIGHT ON THE CHAIN STATES AND BOSE-EINSTEIN CONDENSATE IN LIGHT NUCLEI

International Journal of Modern Physics E ◽

10.1142/s0218301308011252 ◽

2008 ◽

Vol 17 (10) ◽

pp. 2150-2154 ◽

Cited By ~ 1

Author(s):

S. YU. TORILOV ◽

K. A. GRIDNEV ◽

W. GREINER

Keyword(s):

Cluster Model ◽

Einstein Condensate ◽

Light Nuclei ◽

Einstein Condensation ◽

Pitaevskii Equation ◽

Deformed Nuclei ◽

Bose Einstein Condensation ◽

Bose Einstein Condensate ◽

Alpha Cluster ◽

Bose Einstein

The simple alpha-cluster model was used for the consideration of the chain states and Bose-Einstein condensation in the light self-conjugated nuclei. Obtained results were compared with predictions of the shell-model for the deformed nuclei, with calculations based on Gross-Pitaevskii equation and with recent experimental results.

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Is FeSe a superconductor in the Bose-Einstein condensation limit?

10.36471/jccm_november_2017_01 ◽

2017 ◽

Keyword(s):

Einstein Condensation ◽

Bose Einstein Condensation ◽

Bose Einstein

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Systems with Condensates and Pairing

10.1093/oso/9780198797241.003.0012 ◽

2018 ◽

Author(s):

Klaus Morawetz

Keyword(s):

Critical Parameters ◽

Einstein Condensation ◽

Cooper Pairs ◽

Pair Breaking ◽

Systematic Theory ◽

Bose Einstein Condensation ◽

T Matrix ◽

The Stability ◽

Bose Einstein

The Bose–Einstein condensation and appearance of superfluidity and superconductivity are introduced from basic phenomena. A systematic theory based on the asymmetric expansion of chapter 11 is shown to correct the T-matrix from unphysical multiple-scattering events. The resulting generalised Soven scheme provides the Beliaev equations for Boson’s and the Nambu–Gorkov equations for fermions without the usage of anomalous and non-conserving propagators. This systematic theory allows calculating the fluctuations above and below the critical parameters. Gap equations and Bogoliubov–DeGennes equations are derived from this theory. Interacting Bose systems with finite temperatures are discussed with successively better approximations ranging from Bogoliubov and Popov up to corrected T-matrices. For superconductivity, the asymmetric theory leading to the corrected T-matrix allows for establishing the stability of the condensate and decides correctly about the pair-breaking mechanisms in contrast to conventional approaches. The relation between the correlated density from nonlocal kinetic theory and the density of Cooper pairs is shown.

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