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Showing 1 to 6 of 6 for “"Vacuum polarization"”.
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Renormalization of cavity field theories
… for the quadratically divergent one loop vacuum polarization. In this thesis we firstly develop a set of Fourier transforms, appropriate to a discussion of renormalization in a cavity. Using these, we renormalize the cavity propagators to one loop for scalar, Dirac, and gauge fields. We …
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Perturbative Check of the Action and Energy Lattice Sum Rules
… presented, and the transversality of the gluonic vacuum polarization on the lattice is proven. The crucial part of the action sum rule is an identity whose explicit check using perturbation theory provides methods and results which are useful for checking the energy sum rule. Additionally, the …
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Radiative Corrections to and Connections Among Theories With Lorentz Violation and Time-Varying Couplings
… violations in quantum electrodynamics. The vacuum polarization diagram and fermion self-energy are studied in order to study the consequences of a time-varying &alpha on photon and fermion propagation. </p> <p> In the weak sector, light curves of type Ia supernovae---which decay at a rate …
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Nuclear charge distribution of ¹⁸¹Ta
… of the electrostatic interaction, corrected for vacuum polarization, is used in the Dirac equation. Then the electric quadrupole interaction term is diagonalized in the basis formed by the Dirac solutions and the nuclear wave functions. This prescription assumes a nuclear rotational model to be …