Symmetries in Nuclear Structure : An Occasion to Celebrate the 60th Birthday of Francesco Iachello - Proceedings of the Highly Specialized Seminar.
Title:
Symmetries in Nuclear Structure : An Occasion to Celebrate the 60th Birthday of Francesco Iachello - Proceedings of the Highly Specialized Seminar.
Author:
Vitturi, Andrea.
ISBN:
9789812702760
Personal Author:
Physical Description:
1 online resource (495 pages)
Series:
The Science and Culture Series - Physics
Contents:
CONTENTS -- Preface -- Symmetry: the search for order in nature -- 1 Symmetry -- 2 Symmetry in Physics -- Additional quantum numbers dynamical symmetries and degeneracies -- Partial dynamical symmetry as an intermediate symmetry structure -- 1 Introduction -- 2 SU(3) PDS (type I) -- 3 O(6) PDS (type I) -- 4 O(5) PDS (type II) -- 5 O(6) PDS (type II) -- 6 O(6) PDS (type III) -- 7 Summary and Conclusions -- Vector coherent state theory: a powerful tool for solving algebraic problems in physics -- 1 Introduction -- 2 Scalar coherent state representations -- 3 Vector coherent state representations -- 4 VCS representations of su(3) in an su(2) basis -- 5 Representation of su(3) in an so(3) basis -- 6 Representations of so(5) in an so(3) basis -- 7 Discussion -- Symmetries in strongly deformed nuclei -- 1 Introduction -- 2 Model space and interaction -- 3 Representative results -- 4 Conclusions -- Shape coexistence and its symmetries -- 1 Introduction: the early work -- 2 Quadrupole force dominance -- 3 Shape coexistence and its symmetries -- 4 Outlook -- Shape-invariance and many-body physics -- 1 Introduction -- 2 Many-Body Hamiltonians -- 3 Connection to Gaudin Algebras -- Some new perspectives on pairing in nuclei -- 1 Introduction -- 2 Richardson's solution of the Pairing Model -- 3 An electrostatic analogy for Pairing Models -- 4 A new pictorial representation of nuclear superconductivity -- 5 A new mechanism for sd dominance in the IBM -- 6 Summary -- Pairing and quartetting in the Interacting Boson Model -- 1 A symmetry triangle for the shell model -- 2 Symmetry structure of superconducting solutions -- 3 Quartetting -- 4 A boson mapping of the SO(8) model -- 5 A mapping from the shell model to IBM-4 -- 6 Summary and outlook -- Challenges from symmetry on the drip lines -- 1 Introduction -- 2 The Neutron Drip Line.
3 The Proton Drip Line -- 4 Mirror Nuclei at High Spin -- 5 Conclusions -- High accuracy atomic mass measurements. Application to neutron-rich zirconium isotopes -- 1 Physics of accurate mass measurements -- 2 Ion traps in mass measurements of radioactive isotopes -- 3 JYFLTRAP - Universal approach to mass measurements -- 4 First results on neutron-rich Zr isotopes -- 5 Future directions -- 6 Acknowledgements -- Nuclear supersymmetry: new tests and extensions -- 1 Introduction -- 2 New experiments -- 3 Susy without dynamical symmetry -- 4 Generic susy -- 5 Dedication -- Everything you always wanted to know about SUSY but were afraid to ask -- 1 Introduction -- 2 The U/(6/12)v O U(6/4)TT supersymmetry -- 3 One-nucleon transfer reactions -- 4 Summary and outlook -- Supersymmetry and identical bands -- 1 Introduction -- 2 Pseudo-spin -- 3 Supersymmetry with identical bands : A schematic model -- 4 Comparison of schematic model to data -- 5 Super-symmetry of identical bands in 171-172Yb supported by lifetime data -- Searching for boson-fermion symmetries in neutron-rich nuclei -- 1 Introduction -- 2 Experimental Methods -- 3 Systematics of N = 51 Isotones and Future Prospects -- Supersymmetry in nuclear clusterization -- 1 a-cluster Bands in Nuclei with Mass Number A = 16 to 20 -- 2 The U(4
4 Extending the shell model theory to higher temperatures -- 5 Conclusion -- Integrability and quantum phase transitions in Interacting Boson Models -- Phase transitional behavior in spherical-deformed transitions regions -- 1 Introduction -- 2 Symmetries and Nuclear Structural Evolution -- 3 Conclusions -- Critical point nuclei in the Interacting Boson Model -- 1 Introduction -- 2 Phase/shape transition in low energy nuclear spectra -- 3 The evolution of nuclear observables in the phase/shape transition region -- 4 Mapping the symmetry triangle -- 5 Conclusion -- Critical points in nuclei and Interacting Boson Model intrinsic states -- 1 Introduction -- 2 Critical Points in the Geometric Collective Model -- 3 Wave Function Ansatz for the y-Unstable Limit of the Interacting Boson Model -- 4 Intrinsic State of the y-Unstable Wavefunction Ansatz -- 5 y-unstable Wave function Ansatz at the Critical Point -- 6 Comparison with E(5) and Experiment -- 7 Large N Limit -- 8 Summary and Future Outlook -- The critical point symmetry E(5) and the IBM -- 1 Introduction -- 2 The E(5) symmetry -- 3 Energy surfaces in IBM -- 4 An exactly solvable model -- 5 Conclusions -- Finite well solutions for the E(5) and X(5) Hamiltonians -- 1 Introduction -- 2 Finite well: y-soft case -- 3 Finite well: y-stabilized case -- 4 Conclusions -- Analytical solutions of Bohr collective Hamiltonian with y-instability -- 1 Introduction -- Phase transitions and critical points in the Interacting Boson Model -- 1 Introduction -- 2 IBM general description -- 3 Energy surfaces and phase transitions -- 4 Conclusions -- Test of the empirical realization of the X(5) symmetry in 150Nd and 104Mo -- 1 Introduction -- 2 Experimental Details -- 3 Results and Discussion -- The rich structures of a very simple Hamiltonian -- 1 Introduction.
2 A very simple hamiltonian -- 3 Nuclear shapes and Landau theory -- 4 Phase transitions in more complex systems -- 5 Conclusion -- The excited 0+ states in 162Yb and the critical point phase/shape transition -- 1 Introduction -- 2 The Search for X(5) Nuclei: The P Factor -- 3 Off-beam y-ray spectroscopy of 162Yb -- 4 Conclusions -- Test of the critical point symmetry X(5) in N=90 nuclei and A=180 Os isotopes -- 1 Introduction -- 2 Experimental Details -- 3 Critical Point Symmetry X(5) -- 4 New X(5) regions -- 5 Summary -- Phase transitions in the octupole degree of freedom -- 1 Introduction -- 2 Octupole excitations in nuclei with stable quadrupole deformation -- 3 A general theoretical frame for simultaneous axial quadrupole and octupole excitations -- Prompt particle decay in nuclei: present status and future perspectives -- 1 Introduction -- 2 Present Status of Prompt Particle Decay -- 3 Future Perspectives of Prompt Particle Decay -- 4 Summary -- Quadrupole moments and deformations of "shears" states in the Z= 82 Pb nuclei -- 1 Introduction -- 2 Spectroscopic quadrupole moments of the "blades of the shears" -- 3 Spectroscopic quadrupole moments of the "shears states" -- 4 Summary -- Structure of bands in neutron-rich even palladium isotopes -- 1 Introduction -- 2 Results and discussion -- 3 Conclusions -- Octupole two-phonon states in deformed nuclei -- 1 Introduction -- 2 Experiments -- 3 Analysis of the data -- 4 Comparison of 0+ states with IBA calculations -- IBFM2 study of odd-A Cs and Xe isotopes and beta decay in Xe-Cs -- 1 Introduction -- 2 Calculation in the Odd-A Xe and Cs Isotopes -- 3 Discussions -- 4 Conclusions -- Algebraic description of high angular momentum states in nuclei -- 1 The Interacting Boson Model plus Broken Pairs -- 2 High-spin structure in 104Cd.
3 High-spin dipole bands in transitional nuclei -- 4 High-spin states in 101Ag -- Search for seniority isomers: lifetime measurements in 93Tc and 95Ru -- 1 Introduction -- 2 The experiment -- 3 Transition strengths -- Magnetic moments from the Mediterranean to Mt. Fuji -- 1 Introduction -- 2 Experimental Procedures -- 3 General results obtained with the inverse kinematics/Coulomb excitation/ transient field technique -- 4 44Ca midshell between 40Ca and 48Ca -- Probing nuclear structure by real photons: systematics of low-lying dipole modes in heavy nuclei -- 1 Motivation -- 2 Experimental Techniques -- 3 M1 Scissors Mode Excitations -- 4 E1 Excitations -- 5 Concluding Remarks and Outloook -- Electric dipole excitations close to the particle threshold -- 1 Introduction -- 2 Experimental method -- 3 Two phonon quadrupole-octupole excitations -- 4 E1 strength close to the particle threshold -- 5 Summary and Outlook -- Mixed-symmetry multiphonon structures and first evidence for F-vector E1 transitions -- 1 Introduction -- Spin-isospin excitations pairing and shape coexistence -- 1 Introduction -- 2 Theoretical approach -- 3 The role of J=l pairing and residual interactions -- 4 The role of T=l pairing and BCS correlations -- 5 The role of deformation and shape coexistence -- Dipole symmetry near threshold -- 1 Molecular Dipole Symmetry -- 2 The AGB Cluster Sum Rule -- 3 Conclusions -- Measurement of the spin entanglement of two-proton system -- 1 Introduction -- 2 Experiment by Lamehi-Rachti and Mittig -- 3 Our Experiment -- 4 Remarks and Future Prospects -- SU(6)-breaking symmetry and the ratio of proton momentum distributions -- 1 Introduction -- 2 Ratio of proton momentum fractions carried by valence quarks -- 3 Parton distributions from quark models.
The hypercentral constituent quark model and its symmetry.
Abstract:
The Highly Specialized Seminar on "Symmetries in Nuclear Structure", held in Erice, Italy, in March 2003, celebrated the career and the remarkable achievements of Francesco Iachello, on the occasion of his 60th birthday. Since the development of the interacting boson model in the early 1970s, the ideas of Iachello have provided a variety of frameworks for understanding collective behaviour in nuclear structure, founded on the concepts of dynamical symmetries and spectrum-generating algebras. The original ideas, which were developed for the description of atomic nuclei, have now been successfully extended to cover spectroscopic behaviour in other fields, such as molecular or hadronic spectra. More recently, the suggestion by Iachello of critical point symmetries to treat nuclei in shape/phase transitional regions has opened an exciting new front for both theoreticians and experimentalists. The talks presented at the meeting covered many of the most active forefront areas of nuclear structure as well as other fields where ideas of symmetries are being explored. Topics in nuclear structure included extensive discussions on dynamical symmetries, critical point symmetries, phase transitions, statistical properties of nuclei, supersymmetry, mixed symmetry states, shears bands, pairing and clustering in nuclei, shape coexistence, exotic nuclei, dipole modes, and astrophysics, among others. In addition, important sessions focused on talks by European laboratory directors (or their representatives) outlining prospects for nuclear structure, and the application of symmetry ideas to molecular phenomena. Finally, a special lecture by Nobel laureate Alex Mueller, on s and d wave symmetry in superconductors, presented a unique insight into an allied field. The proceedings have been selected for coverage in:. Index to Scientific & Technical Proceedings® (ISTP®
/ ISI Proceedings). Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings). CC Proceedings - Engineering & Physical Sciences. Contents: Shape Coexistence and Its Symmetries (K Heyde & R Fossion); Some New Perspectives on Pairing in Nuclei (S Pittel & J Dukelsky); Challenges from Symmetry on the Drip Lines (D D Warner); Supersymmetry and Identical Bands (P von Brentano); Critical Point Nuclei in the Interacting Boson Model (N V Zamfir et al.); The Rich Structures of a Very Simple Hamiltonian (J Jolie); Phase Transitions in the Octupole Degree of Freedom (P G Bizzeti); Magnetic Moments from the Mediterranean to Mt Fuji (N Benczer-Koller et al.); Electric Dipole Excitations Close to the Particle Threshold (A Zilges); Spin-Isospin Excitations, Pairing and Shape Coexistence (E M de Guerra et al.); Shape-Phase and Order-to-Chaos Transitions in Nuclei (G Maino); Algebraic Description of n-Alkane Molecules (S Oss); Poem (R F Casten); and other papers. Readership: Researchers and graduate students in nuclear and theoretical physics.
Local Note:
Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2017. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.
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