Navegação Ciências Exatas e da Terra por Autor "Jacob, Gerhard"
Resultados 1-6 de 6
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Charge commutator for any momentum
(1969) [Artigo de periódico]The nucleon matrix elements of the charge commutation relations are considered for arbitrary momentum. The resulting expression is exact. The high-momentum limit reduces to the Alder-Weisberger sum rule. For zero momentum ... -
Degrees of symmetry in quantum field theories
(1972) [Artigo de periódico]A hierarchy of possible symmetries in quantum field theory is defined, which reaches from a purely mathematical invariance to the conventional physical invariance, including the commonly discussed type of spontaneously ... -
Investigation of medium and heavy nuclei by quasi-free-proton scattering
(1960) [Artigo de periódico] -
Probing the spin-orbit coupling of nuclear protons
(1973) [Artigo de periódico]The strong absorption in quasi-free scattering opens a possibility of measuring the spin-orbit coupling of nuclear protons. Cross sections for polarized incoming protons are expected to exhibit pronounced asymmetries, with ... -
Renormalization and gauge invariance in quantum electrodynamics
(1970) [Artigo de periódico]The connection between the field theory and the perturbation expansion of quantum electrodynamics is studied. As a starting point the usual Lagrangian is taken but with bare electron mass and the renormalization constant ... -
Spontaneously broken symmetries and current conservation
(1966) [Artigo de periódico]
