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Page 40

This lecture is intended to give an elementary account of the theory of the

neutrino and of Fermi-

physical principles underlying this theory and on the questions related to the

physical ...

This lecture is intended to give an elementary account of the theory of the

neutrino and of Fermi-

**Dirac**particles in general. I shall lay some stress on thephysical principles underlying this theory and on the questions related to the

physical ...

Page 41

The first Fermi-

The field which describes this particle does not transform as an irreducible

representation of the Lorentz group. Since, however,

before ...

The first Fermi-

**Dirac**particle which was recognized as such was the electron.The field which describes this particle does not transform as an irreducible

representation of the Lorentz group. Since, however,

**Dirac's**theory was createdbefore ...

Page 46

It can now be easily verified on the basis of the commutation relations (19) that it

is possible to obtain a set of y, starting from

F=-^{l + iy't). The representation which satisfies the reality condition (22) has ...

It can now be easily verified on the basis of the commutation relations (19) that it

is possible to obtain a set of y, starting from

**Dirac's**choice and putting in (20) (23)F=-^{l + iy't). The representation which satisfies the reality condition (22) has ...

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### Contents

Generalità | 1 |

Parte prima Problemi teorici | 9 |

Parte quart a Mesoni | 11 |

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### Common terms and phrases

3-decay 3-space 3-surface amplitude angular momentum antiparticles c-number charge conjugation classical co-ordinate coefficients commutation component configuration conservation coupling constants curvature curved decay defined density Dirac discussed eigenvalues Einstein's electric electromagnetic field electron elementary particles emission emitted energy experimental expressed Fermi fermions field equations formulation geometrodynamics geometry geon gravitational radiation gravitational wave initial value data interazioni intrinsic invariant isotopic spin J. A. Wheeler lepton Lorentz Lorentz group magnetic field Majorana mass matrix elements metric modes momenta muon neutrino neutrino field neutron nuclear nuclei nucleons Nuovo Cimento observed operators pairs parity Pauli phase factors photons Phys physics pion polarization possible problem purely geometrical quantity quantum electrodynamics quantum numbers radiation ratio relation relativity rotation scattering singularity solution space space-like space-time strong interactions symmetry tensor theorem theory topology transformation vector wave functions weak interactions wormhole y-rays zero