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Browsing by Author "Frank, A."
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A local anharmonic treatment of vibrations of methane [Article]
Arias Carrasco, José Miguel; Pérez Bernal, Francisco; Frank, A.; Lemus Casillas, Renato; Bijker, R. (1997) 
A symmetry adapted approach to molecular spectroscopy: the anharmonic oscillator symmetry model [Article]
Bijker, R.; Arias Carrasco, José Miguel; Pérez Bernal, Francisco; Frank, A.; Lemus Casillas, Renato (1996) 
A SymmetryAdapted Algebraic Approach to Molecular Spectroscopy [Article]
Pérez Bernal, Francisco; Arias Carrasco, José Miguel; Frank, A.; Lemus, R.; Bijker, R. (Scielo, 1996)We apply a symmetryadapted algebraic model to the vibrational excitations in D_3h and T_d molecules. A systematic procedure is used to establish the relation between the algebraic and configuration space formulations. In ...

Algebraic description of stretching and bending modes in nonlinear triatomicmolecules [Article]
Arias Carrasco, José Miguel; Pérez Bernal, Francisco; Lemus Casillas, Renato; Frank, A. (1995) 
Consistent baryon mapping of quark systems [Article]
Pittel, Stuart; Arias Carrasco, José Miguel; Dukelsky, Jorge; Frank, A. (American Physical Society, 1994)We present a new and consistent mapping of colorless threequark clusters onto colorless triplet fermions (baryons) and test it in the context of a threecolor extension of the Lipkin model. For systems with two triplets ...

Eigenvalue correlations and the distribution of ground state angular momenta for random manybody quantum systems [Article]
Barea, J.; Bijker, R.; Frank, A. (The American Physical Society, 2009)The observed preponderance of ground states with angular momentum L=0 in manybody quantum systems with random twobody interactions is analyzed in terms of correlation coefficients (covariances) among different eigenstates. ...

Evaluation of impurity densities from charge exchange recombination spectroscopy measurements at ASDEX Upgrade [Article]
McDermott, R. M.; Dux, R.; Pütterich, T.; Geiger, B.; Kappatou, A.; Lebschy, A.; Bruhn, C.; Cavedon, M.; Frank, A.; Harder, N. den; Viezzer, Eleonora (Institute of Physics Publishing, 20180726)At ASDEX upgrade (AUG) a new framework for the evaluation of impurity densities based on measurements from charge exchange recombination spectroscopy (CXRS) diagnostics has been developed. The charge exchange impurity ...

Image reconstruction techniques applied to nuclear mass models [Article]
Morales, Irving O.; Isacker, P. Van; Velázquez, V.; Barea, J.; MendozaTemis, J.; López Vieyra, J. C.; Hirsch, J. G.; Frank, A. (The American Physical Society, 2010)A new procedure is presented that combines wellknown nuclear models with image reconstruction techniques. A colorcoded image is built by taking the differences between measured masses and the predictions given by the ...

New supersymmetric quartet of nuclei in the A ∼ 190 mass region [Article]
Barea, J.; Bijker, R.; Frank, A.; Graw, G.; Hertenberger, R.; Wirth, H. F.; Christen, S.; Jolie, J.; Tonev, D.; Balodis, M. (The American Physical Society, 2009)We present evidence for a new supersymmetric quartet in the A~190 region of the nuclear mass table. New experimental information on transfer and neutron capture reactions to the oddodd nucleus 194Ir strongly suggests the ...

On the relation between algebraic and configuration space calculations of molecular vibrations [Article]
Pérez Bernal, Francisco; Bijker, R.; Frank, A.; Lemus, R.; Arias Carrasco, José Miguel (Elsevier, 199603)The relation between algebraic and traditional calculations of molecular vibrations is investigated. An explicit connection between interactions in configuration space and the corresponding algebraic interactions is established.

Phase transitions and critical points in the rareearth region [Article]
García Ramos, José Enrique; Arias Carrasco, José Miguel; Barea, J.; Frank, A. (American Physical Society, 20030801)A systematic study of isotope chains in the rareearth region is presented. For chains 60 144 2 154Nd, 62 146 2 160Sm, 64 148 2 162Gd, and 66 150 2 166 Dy, energy levels, E2 transition rates, and twoneutron separation ...

Probing additional dimensions in the universe with neutron experiments [Article]
Frank, A.; Van Isacker, Piet; Gómez Camacho, Joaquín José (Elsevier, 2004)We carry out a simple analysis of (n+3)dimensional gravity in the context of recent work on 'large' supplementary dimensions and deduce a formula for the expected compactification radius for the n additional dimensions ...

Search for E(5) symmetry in nuclei: The Ru isotopes [Article]
Frank, A.; Alonso Alonso, Clara Eugenia; Arias Carrasco, José Miguel (American Physical Society, 20020101)We carry out an interacting boson model study of the Ru isotopes using a U(5)SO(6) transitional Hamiltonian with fixed parameters, where the variation is due only to the change in boson number N. Transitional behavior ...

Singleparticle transfer and nuclear supersymmetry [Article]
Barea, J.; Bijker, R.; Frank, A.; Loyola, G. (American Physical Society, 20011201)Transfer reactions constitute a stringent test for nuclear supersymmetry, a theory that simultaneously describes neighboring nuclei with bosonic and fermionic character. We construct and analytically evaluate ...

U(5)O(6) transition in the interacting boson model and the E(5) critical point symmetry [Article]
Arias Carrasco, José Miguel; Alonso Alonso, Clara Eugenia; Vitturi, Andrea; García Ramos, José Enrique; Dukelsky, Jorge; Frank, A. (American Physical Society, 20031001)The relation of the recently proposed E(5) critical point symmetry with the interacting boson model is investigated. The largeN limit of the interacting boson model at the critical point in the transition ...