## Frontiera E Confini Della Fisica Di Molte ParticelleR. A. Broglia, John Robert Schrieffer, Società italiana di fisica Subjects at the forefront of many-particle research, like high-temperature superconductivity, the quantum Hall effect, heavy fermions, tunneling of quantal systems with many degrees of freedom, Monte Carlo calculations on a lattice etc., were presented. The meeting was well timed as it coincided with a very active period of research in the study of superconductivity and thus provided an excellent opportunity to assess some of the major developments that have taken place in the last years. |

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Page 140

Interference effects in heavy-ion

cases the nuclei involved in a heavy- ion collision have large charges and

Coulomb effects are very important. When the incident energy is low enough, the

nuclei ...

Interference effects in heavy-ion

**scattering**. 2'1. Coulomb**scattering**. - In manycases the nuclei involved in a heavy- ion collision have large charges and

Coulomb effects are very important. When the incident energy is low enough, the

nuclei ...

Page 142

1 is very similar to a Fresnel diffraction pattern in optics and a Fresnel diffraction

theory of nuclear

Frahn [3]. The theory predicts the cross-section ratio ajaR = J at the classical

grazing ...

1 is very similar to a Fresnel diffraction pattern in optics and a Fresnel diffraction

theory of nuclear

**scattering**was first developed by Blair [2] and extended byFrahn [3]. The theory predicts the cross-section ratio ajaR = J at the classical

grazing ...

Page 145

In order to obtain the

be parallel to the z-axis and suppose that the point of observation r is far from the

scatterer. One of the classical trajectories which contributes to the semi-classical

...

In order to obtain the

**scattering**amplitude, we choose the incident momentum tobe parallel to the z-axis and suppose that the point of observation r is far from the

scatterer. One of the classical trajectories which contributes to the semi-classical

...

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### Contents

insula | 1 |

EVB theory such as it is | 14 |

Formal theories of EVB and highT0 superconductivity | 20 |

Copyright | |

21 other sections not shown

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### Common terms and phrases

amplitude angular momentum approximation band barrier behavior calculated charge classical configuration correlation Coulomb coupling cross-section defined deformation degrees of freedom density described dipole discussed dynamics edited effect eigenstates electron equation of motion excitation energy exciton expectation value experimental factor Fermi energy Fermi liquid Fermi surface fermion finite fluctuations gauge given Green's function Gutzwiller Hamiltonian Hartree heavy-ion hole Hubbard model inertia interaction Landau lattice Laughlin Lett limit linear magnetic field mass matrix element mean-field Monte Carlo neutrons nuclear nucleon nucleus obtained orbital oscillator P. W. ANDERSON pairing parameter particle path integral phase Phys physics potential problem quadrupole quantity quantum quasi-particle R. A. BROGLIA relativistic renormalized resonance rotational frequency sect shown in fig simulation single-particle spin spinon superconductivity symmetry temperature term theory tion tonian transition tunnelling variable vector wave function yrast zero