Transformation Function in Quantum Electrodynamics

Continuous Wave Function Collapse in Quantum-Electrodynamics?

Time-continuous wavefunction collapse mechanisms not restricted to markovian approximation have been found only a few years ago, and have left many issues open. The results apply formally to the standard relativistic quantum-electrodynamics. I present a generalized Schrödinger equation driven by a certain complex stochastic £eld. The equation reproduces the exact dynamics of the interacting fer...

Calculation of Kolmogorov Entropy in Cavity Quantum Electrodynamics

In this paper Kolomogorov entropy of a simulated cavity quantum electrodynamics in a multi-partite system consisting of eight quantum dots in interaction with one cavity mode has been estimated. It has been shown that the Kolmogorov Entropy monotonically increases with the increasing coupling strength, which is a sufficient condition for chaotic behavior under ultrastrong coupling regime. The a...

Gauge invariance of the β-function in nonrelativistic quantum electrodynamics

Recently there has been much interest in gauge theories applied to condensed matter physics. I show that for a system of nonrelativistic electrons coupled to a U(1) gauge field in the presence of a Fermi surface, the β-function to one-loop order is, for a particular family of gauge-choices, independent of the gauge-choice.

Quantum Electrodynamics in Graphene

Quantum quincunx in cavity quantum electrodynamics

We introduce the quantum quincunx, which physically demonstrates the quantum walk and is analogous to Galton’s quincunx for demonstrating the random walk. In contradistinction to the theoretical studies of quantum walks over orthogonal lattice states, we introduce quantum walks over nonorthogonal lattice states (specifically, coherent states on a circle) to demonstrate that the key features of ...