Browsing Exact and Earth Sciences by Author "Jacob, Gerhard"
Now showing items 1-6 of 6
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Charge commutator for any momentum
Dillenburg, Darcy; Jacob, Gerhard; Maris, Theodor August Johannes; Stech, Berthold (1969) [Journal article]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
Maris, Theodor August Johannes; Dillenburg, Darcy; Jacob, Gerhard; Liberman, Bernardo (1972) [Journal article]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
Jacob, Gerhard; Maris, Theodor August Johannes (1960) [Journal article] -
Probing the spin-orbit coupling of nuclear protons
Jacob, Gerhard; Maris, Theodor August Johannes; Schneider, Claudio; Teodoro, Maria Ribeiro (1973) [Journal article]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
Maris, Theodor August Johannes; Dillenburg, Darcy; Jacob, Gerhard (1970) [Journal article]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
Maris, Theodor August Johannes; Jacob, Gerhard (1966) [Journal article]