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Eigenvalue correlations and the distribution of ground state angular momenta for random many-body quantum systems

 

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Opened Access Eigenvalue correlations and the distribution of ground state angular momenta for random many-body quantum systems
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Author: Barea, J.
Bijker, R.
Frank, A.
Department: Universidad de Sevilla. Departamento de Ingeniería Química y Ambiental
Date: 2009
Published in: Physical Review C - Nuclear Physics, 79 (5), 054302-1-054302-5.
Document type: Article
Abstract: The observed preponderance of ground states with angular momentum L=0 in many-body quantum systems with random two-body interactions is analyzed in terms of correlation coefficients (covariances) among different eigenstates. It is shown that the geometric analysis of Chau can be interpreted in terms of correlations (covariances) between energy eigenvalues, thus providing an entirely statistical explanation of the distribution of ground state angular momenta of randomly interacting quantum systems that, in principle, is valid for both fermionic and bosonic systems. The method is illustrated for the interacting boson model.
Cite: Barea, J., Bijker, R. y Frank, A. (2009). Eigenvalue correlations and the distribution of ground state angular momenta for random many-body quantum systems. Physical Review C - Nuclear Physics, 79 (5), 054302-1-054302-5.
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URI: http://hdl.handle.net/11441/58506

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