Effect of Short Range Correlations in Charged Pion Photoproduction from 16O

1975 ◽  
Vol 53 (13) ◽  
pp. 1292-1298 ◽  
Author(s):  
K. Srinivasa Rao ◽  
V. Devanathan
Keyword(s):  
Wave Function ◽  
Correlation Function ◽  
Short Range ◽  
Unitary Operator ◽  
Charged Pion ◽  
Pion Photoproduction ◽  
Nuclear Wave Function ◽  
Positive Pion ◽  
Short Range Correlations

Short range correlations in nuclei are introduced into the nuclear wave function using a unitary operator whose form was originally suggested by Villars. Their effect on positive pion photoproduction from 16O is found to be small for the correlation function we have assumed.

The Use of Coherent States in the Theory of Quantum Crystals

1972 ◽  
Vol 50 (16) ◽  
pp. 1815-1825 ◽  
Author(s):  
J. Noolandi ◽  
J. Van Kranendonk
Keyword(s):  
Correlation Function ◽  
Coherent State ◽  
Liquid Helium ◽  
Recent Work ◽  
Single Particle ◽  
Coherent States ◽  
Short Range ◽  
Particle Distributions ◽  
Quantum Crystals ◽  
Short Range Correlations

The coherent state formalism is applied to the calculation of the phonon frequencies in quantum crystals. The normal mode frequencies are determined using an expansion in powers of the displacements of the centers of the single-particle distributions rather than of the particles. The known results of the RPA and of Meissner's inversion of the displacement–displacement correlation function are derived in a simple way, and the connection with Feynman's method for liquid helium is discussed. The method of constant short-range correlations is introduced and compared with the recent work of Koehler and Werthamer.

scholarly journals Short Range Correlations and Wave Function Factorization in Light and Finite Nuclei

2010 ◽  
Vol 50 (1-4) ◽  
pp. 243-246 ◽  
Author(s):  
C. Ciofi degli Atti ◽  
L. P. Kaptari ◽  
H. Morita ◽  
S. Scopetta
Keyword(s):  
Wave Function ◽  
Short Range ◽  
Finite Nuclei ◽  
Short Range Correlations

Three-body problem of two electron atoms. II

1980 ◽  
Vol 58 (6) ◽  
pp. 760-762 ◽  
Author(s):  
S. G. Lie ◽  
Y. Nogami
Keyword(s):  
Wave Function ◽  
Correlation Function ◽  
Electron Correlation ◽  
Ground State ◽  
Short Range ◽  
Body Problem ◽  
Ground State Wave Function ◽  
Three Body Problem ◽  
State Wave ◽  
Three Body

With the ansatz that the ground state wave function for a helium-like atom is of the form of [Formula: see text], the optimal correlation function [Formula: see text] is determined. Here x and y are the distances of the electrons from the nucleus, while z is that between the electrons. The parameters α and β are determined by minimizing the energy of the system. The method is particularly useful for calculating quantities which are sensitive to the short-range electron–electron correlation.

SHORT RANGE CORRELATIONS IN RELATIVISTIC NUCLEAR MODELS

2007 ◽  
Vol 21 (13n14) ◽  
pp. 2407-2419
Author(s):  
PRAFULLA K. PANDA ◽  
C. PROVIDÊNCIA ◽  
J. DA PROVIDÊNCIA
Keyword(s):  
Equation Of State ◽  
Nuclear Matter ◽  
Relativistic Theory ◽  
Short Range ◽  
Unitary Operator ◽  
Operator Method ◽  
Pion Exchange ◽  
Hartree Fock ◽  
Nuclear Models ◽  
Short Range Correlations

Short range correlations are introduced using the unitary operator method in a relativistic theory of nuclear matter based on the Hartree-Fock approximation. Pion exchange, including the tensor contribution, is taken into account. It is found that both the tensor contribution of pion exchange and short range correlations soften the equation of state. The neutron matter equation of state is also discussed.

Distribution and Correlation of the Coding Sequence Lengths in Bacterial Genomes

2008 ◽  
Vol 59 (11) ◽  
Author(s):  
Vasile V. Morariu
Keyword(s):  
Correlation Analysis ◽  
Exponential Function ◽  
Short Range ◽  
Statistical Physics ◽  
Bacterial Genomes ◽  
Coding Sequence ◽  
Correlation Properties ◽  
Short Range Correlations ◽  
Fluctuating System

The length of coding sequence (CDS) series in bacterial genomes were regarded as a fluctuating system and characterized by the methods of statistical physics. The distribution and the correlation properties of CDS for 47 genomes were investigated. The distribution was found to be approximated by an exponential function while the correlation analysis revealed short range correlations.

scholarly journals 0νββ-decay nuclear matrix elements with self-consistent short-range correlations

2009 ◽  
Vol 79 (5) ◽  
Author(s):  
Fedor Šimkovic ◽  
Amand Faessler ◽  
Herbert Müther ◽  
Vadim Rodin ◽  
Markus Stauf
Keyword(s):  
Nuclear Matrix ◽  
Short Range ◽  
Matrix Elements ◽  
Self Consistent ◽  
Short Range Correlations
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