On the Role of the Subsidiary Condition in Quantum Electrodynamics

1950 ◽  
Vol 78 (2) ◽  
pp. 149-156 ◽  
Author(s):  
F. Coester ◽  
J. M. Jauch
Keyword(s):  
Quantum Electrodynamics ◽  
Subsidiary Condition

scholarly journals Non-Markovian features in semiconductor quantum optics: quantifying the role of phonons in experiment and theory

Nanophotonics ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 655-683 ◽  
Author(s):  
Alexander Carmele ◽  
Stephan Reitzenstein
Keyword(s):  
Quantum Electrodynamics ◽  
Theoretical Models ◽  
Cavity Quantum Electrodynamics ◽  
Heisenberg Equation ◽  
Linear Absorption ◽  
Electron Phonon Interaction ◽  
Two Photon ◽  
Quantum State Preparation ◽  
Path Integral Method

AbstractWe discuss phonon-induced non-Markovian and Markovian features in QD-based quantum nanooptics. We cover lineshapes in linear absorption experiments, phonon-induced incoherence in the Heitler regime, and memory correlations in two-photon coherences. To qualitatively and quantitatively understand the underlying physics, we present several theoretical models that capture the non-Markovian properties of the electron–phonon interaction accurately in different regimes. Examples are the Heisenberg equation of motion approach, the polaron master equation, and Liouville propagator techniques in the independent boson limit and beyond via the path integral method. Phenomenological modeling overestimates typically the dephasing due to the finite memory kernel of phonons and we give instructive examples of phonon-mediated coherence such as phonon-dressed anticrossings in Mollow physics, robust quantum state preparation, cavity feeding, and the stabilization of the collapse and revival phenomenon in the strong coupling limit of cavity quantum electrodynamics.

Subsidiary Condition in Quantum Electrodynamics

1968 ◽  
Vol 171 (5) ◽  
pp. 1749-1761 ◽  
Author(s):  
Kurt Haller ◽  
Leon F. Landovitz
Keyword(s):  
Quantum Electrodynamics ◽  
Subsidiary Condition

On the mass-independent renormalization scheme

1981 ◽  
Vol 59 (10) ◽  
pp. 1327-1333 ◽  
Author(s):  
Gerry McKeon
Keyword(s):  
Perturbation Theory ◽  
Quantum Electrodynamics ◽  
Renormalization Scheme ◽  
Second Order ◽  
Point Of View ◽  
Dimension Function ◽  
Order Coefficient ◽  
Mass Dimension ◽  
Made In

A calculation of the second order coefficient of the anomalous mass dimension function γm of Weinberg is made in quantum electrodynamics using the techniques of Sen and Sundaresan. The role of this quantity in perturbation theory is discussed from the point of view of the "Principle of Minimal Sensitivity" criterion of Stevenson.

scholarly journals The coherence of light is fundamentally tied to the quantum coherence of the emitting particle

2021 ◽  
Vol 7 (18) ◽  
pp. eabf8096
Author(s):  
Aviv Karnieli ◽  
Nicholas Rivera ◽  
Ady Arie ◽  
Ido Kaminer
Keyword(s):  
Wave Function ◽  
Quantum Electrodynamics ◽  
Quantum Coherence ◽  
Light Emission ◽  
Quantum Correlations ◽  
High Energy ◽  
High Energy Particle ◽  
Particle Wave Function ◽  
Detection Schemes

Coherent emission of light by free charged particles is believed to be successfully captured by classical electromagnetism in all experimental settings. However, recent advances triggered fundamental questions regarding the role of the particle wave function in these processes. Here, we find that even in seemingly classical experimental regimes, light emission is fundamentally tied to the quantum coherence and correlations of the emitting particle. We use quantum electrodynamics to show how the particle’s momentum uncertainty determines the optical coherence of the emitted light. We find that the temporal duration of Cherenkov radiation, envisioned for almost a century as a shock wave of light, is limited by underlying entanglement between the particle and light. Our findings enable new capabilities in electron microscopy for measuring quantum correlations of shaped electrons. Last, we propose new Cherenkov detection schemes, whereby measuring spectral photon autocorrelations can unveil the wave function structure of any charged high-energy particle.

Dimensional regularization and the path-integral approach to photon mass in the Schwinger model

1989 ◽  
Vol 67 (5) ◽  
pp. 515-518
Author(s):  
T. F. Treml
Keyword(s):  
Path Integral ◽  
Quantum Electrodynamics ◽  
Dimensional Regularization ◽  
Integral Approach ◽  
Coordinate Space ◽  
Photon Mass ◽  
Two Dimensional ◽  
Schwinger Model ◽  
Path Integral Approach

The derivation of the photon mass in the Schwinger model (two-dimensional quantum electrodynamics) is studied in a path-integral approach that employs a coordinate-space form of dimensional regularization. The role of the antisymmetric epsilon pseudotensor in dimensional regularization is briefly discussed. It is shown that the correct photon mass may easily be recovered by a dimensionally regularized calculation in which the epsilon pseudotensor is taken to be a purely two-dimensional quantity.

On the subsidiary condition in quantum electrodynamics

1975 ◽  
Vol 91 (3) ◽  
pp. 425-431 ◽  
Author(s):  
Dieter Maison ◽  
Daniel Zwanziger
Keyword(s):  
Quantum Electrodynamics ◽  
Subsidiary Condition
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