## 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 17

Pictorially, if we have a state made up of a superposition of all possible pair

bondings of local spins ^=2 mmimn) ... , »tIJ *1 ... This still does not

unnecessary pairs so only costs half the energy of

charge ...

Pictorially, if we have a state made up of a superposition of all possible pair

bondings of local spins ^=2 mmimn) ... , »tIJ *1 ... This still does not

**break up**anyunnecessary pairs so only costs half the energy of

**breaking up**a pair, and nocharge ...

Page 187

Pethick and Pines [39] have stressed the role of the spin-orbit coupling in

breaking the conservation of total magnetic moment. At the present time, however

, I believe it is not clear how to

part ...

Pethick and Pines [39] have stressed the role of the spin-orbit coupling in

breaking the conservation of total magnetic moment. At the present time, however

, I believe it is not clear how to

**break up**x int° a Pauli (or Landau quasi-particle)part ...

Page 381

We again

parameter Av = B/L we can separate the two-body interaction from the kinetic

energy (44) exp [- Ath] = exp [- Ark] exp [- At W]. Here K represents the first term in

eq.

We again

**break up**exp [- BH] into a product of L factors, so that using the smallparameter Av = B/L we can separate the two-body interaction from the kinetic

energy (44) exp [- Ath] = exp [- Ark] exp [- At W]. Here K represents the first term in

eq.

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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