Evolution of the optical properties of alkali-metal microclusters towards the bulk: The matrix random-phase-approximation description

1993 ◽  
Vol 47 (15) ◽  
pp. 9849-9861 ◽  
Author(s):  
C. Yannouleas ◽  
E. Vigezzi ◽  
R. A. Broglia
Keyword(s):  
Optical Properties ◽  
Alkali Metal ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
The Matrix

Investigation of isospin forbidden 0+ → 0+ Fermi beta decays with Pyatov method

Open Physics ◽  
2014 ◽  
Vol 12 (11) ◽  
Author(s):  
Abdullah Çalık
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Theoretical Data ◽  
Phase Approximation ◽  
Matrix Elements ◽  
Quasi Particle ◽  
The Matrix ◽  
Pairing Interactions ◽  
Isotopic Invariance ◽  
Beta Decays

AbstractIn the present work, the matrix elements, isospin impurities and log ft values of the isospin forbidden 0+ → 0+ beta decays have been investigated. The calculated results have been compared with available experimental and another theoretical data. The isotopic invariance of the Hamiltonian has been restored by Pyatov method. Within the quasi-particle random phase approximation (QRPA), the computations have been performed both in presence and absence of the pairing interactions.

scholarly journals Role of vertex corrections in the matrix formulation of the random phase approximation for the multiorbital Hubbard model

2016 ◽  
Vol 94 (21) ◽  
Author(s):  
Michaela Altmeyer ◽  
Daniel Guterding ◽  
P. J. Hirschfeld ◽  
Thomas A. Maier ◽  
Roser Valentí ◽  
...  
Keyword(s):  
Hubbard Model ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
Matrix Formulation ◽  
Vertex Corrections ◽  
The Matrix

Interpretation of Preferential Adsorption Using Random Phase Approximation Theory

1995 ◽  
Vol 60 (10) ◽  
pp. 1641-1652 ◽  
Author(s):  
Henri C. Benoît ◽  
Claude Strazielle
Keyword(s):  
Approximation Theory ◽  
Random Phase Approximation ◽  
Virial Coefficient ◽  
Random Phase ◽  
Second Virial Coefficient ◽  
Solvent Mixture ◽  
Gyration Radius ◽  
Thermodynamic Quantities ◽  
Phase Approximation ◽  
Preferential Adsorption

It has been shown that in light scattering experiments with polymers replacement of a solvent by a solvent mixture causes problems due to preferential adsorption of one of the solvents. The present paper extends this theory to be applicable to any angle of observation and any concentration by using the random phase approximation theory proposed by de Gennes. The corresponding formulas provide expressions for molecular weight, gyration radius, and the second virial coefficient, which enables measurements of these quantities provided enough information on molecular and thermodynamic quantities is available.

Neutrino reactions onC12by the quasiparticle random-phase approximation (QRPA)

2010 ◽  
Vol 81 (2) ◽  
Author(s):  
Myung-Ki Cheoun ◽  
Eunja Ha ◽  
Su Youn Lee ◽  
K. S. Kim ◽  
W. Y. So ◽  
...  
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
Quasiparticle Random Phase Approximation
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