4 papers
Explicitly on-shell currents in relativistic mean field models
Alexis Nikolakopoulos, Ryan Plestid
Relativistic mean field models are a useful tool for modeling semi-leptonic scattering and photo production on nuclei. When using free-nucleon currents, it is often claimed that th…
Partial-wave unitarity and long-range interactions
Ryan Plestid, Pablo QuÃlez Lasanta
Theories with massless particles contain -channel (forward scattering) singularities that cause standard fixed order expressions for partial-wave amplitudes to be ill-defined. T…
Vertex corrections and wavefunction renormalization for atoms, nuclei, and other heavy composite particles
Ryan Plestid, Mark B. Wise
We study QED corrections to operator matrix elements involving heavy composite particles (e.g., heavy-mesons, nuclei, and atoms). We define a new notion of reducible and irreducibl…
Manifest Gauge Invariance for Structure Dependent Radiative Corrections to Processes Involving Atoms and Nuclei
Ryan Plestid, Mark B. Wise
Radiative corrections to reactions involving atoms or nuclei can become sensitive to the structure of the bound state. Generically, one encounters correlation functions of multiple…