نتایج جستجو برای: quantum electrodynamics

تعداد نتایج: 299022  

Journal: :Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 2016

Journal: :Progress of Theoretical Physics 1974

Journal: :Reviews in Mathematical Physics 2023

We define symmetries in non-relativistic quantum electrodynamics, which have the physical interpretation of rotation, parity and time reversal symmetry. collect transformation properties related to these Fock space representation as well Schr\"odinger representation. As an application, we generalize improve theorems about Kramer's degeneracy electrodynamics.

Journal: :Physical review 2023

We report on a systematic study the entanglement between helicity degrees of freedom generated at tree level in quantum electrodynamics two-particle scattering processes. determine necessary and sufficient dynamical conditions for outgoing particles to be entangled with one another, expose hitherto unknown generation maximal or nearly through Bhabha Compton scattering. Our work is an early step...

Journal: :European Physical Journal Plus 2023

Abstract We demonstrate the existence of quantum hair in electrodynamics and gravity using effective action techniques. In case we use Euler–Heisenberg action, while unique action. give a general formulation these effects which applies to both theories discuss analogies differences between them. Furthermore, present QED analog black hole evaporation. Spontaneous pair production external field b...

Journal: :Symmetry 2021

In this paper, we consider some second-order effective Hamiltonians describing the interaction of quantum electromagnetic field with atoms or molecules in nonrelativistic limit. Our procedure is valid only for off-energy-shell processes, specifically virtual processes such as those relevant ground-state energy shifts and dispersion van der Waals Casimir-Polder interactions, while on-energy-shel...

2008
Richard Shurtleff

Modifications of a free quantum field calculation using translation-related concepts and general translation representations yield quantum fields for massive particles that as a consequence follow the classical trajectories of electrodynamics and geometrodynamics. The work allows an explanation for the unexpectedly high energy of cosmic rays. The explanation can be tested at the Large Hadron Co...

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