Results 51 to 60 of about 1,452,975 (287)

The Importance of Boundary Conditions in Quantum Mechanics [PDF]

open access: yes, 2003
We discuss the role of boundary conditions in determining the physical content of the solutions of the Schrodinger equation. We study the standing-wave, the ``in,'' the ``out,'' and the purely outgoing boundary conditions. As well, we rephrase Feynman's $
A. F. J. Siegert   +16 more
core   +3 more sources

Phenomenological Quantum-Electrodynamics

open access: yesPhysical Review, 1948
The quantization of the pure radiation field in a uniformly moving refractive medium is carried through both in the Hamiltonian and in the symmetrical four-dimensional form. The total energy and momentum are diagonalized. For a medium velocity larger than $\frac{c}{n}$ there occur photons with negative energy.
Jauch, Joseph-Maria, Watson, K.M.
openaire   +1 more source

Run-away solutions in relativistic spin 1/2 quantum electrodynamics [PDF]

open access: yes, 1997
The existence of run-away solutions in classical and non-relativistic quantum electrodynamics is reviewed. It is shown that the less singular high energy behavior of relativistic spin 1/2 quantum electrodynamics precludes an analogous behavior in that ...
Dirac, F.E. Low, Landau, Moniz
core   +2 more sources

Cavity quantum electrodynamics of strongly correlated electron systems: A no-go theorem for photon condensation [PDF]

open access: yesPhysical review B, 2019
In spite of decades of work it has remained unclear whether or not superradiant quantum phases, referred to here as photon condensates, can occur in equilibrium.
G. M. Andolina   +4 more
semanticscholar   +1 more source

Offshell quantum electrodynamics

open access: yesJournal of Physics: Conference Series, 2013
More than twenty years have passed since the threads of the `proper time formalism' in covariant classical and quantum mechanics were brought together to construct a canonical formalism for the relativistic mechanics of many particles. Drawing on the work of Fock, Stueckelberg, Nambu, Schwinger, and Feynman, the formalism was raised from the status of ...
Land, M. C., Horwitz, L. P.
openaire   +2 more sources

Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics [PDF]

open access: yesNature, 2004
The interaction of matter and light is one of the fundamental processes occurring in nature, and its most elementary form is realized when a single atom interacts with a single photon.
A. Wallraff   +9 more
semanticscholar   +1 more source

Polaritonics: from microcavities to sub-wavelength confinement

open access: yesNanophotonics, 2019
Following the initial success of cavity quantum electrodynamics in atomic systems, strong coupling between light and matter excitations is now achieved in several solid-state set-ups.
Ballarini Dario, De Liberato Simone
doaj   +1 more source

Quantum electrodynamics with anisotropic scaling: Heisenberg-Euler action and Schwinger pair production in the bilayer graphene [PDF]

open access: yes, 2012
We discuss quantum electrodynamics emerging in the vacua with anisotropic scaling. Systems with anisotropic scaling were suggested by Horava in relation to the quantum theory of gravity.
A. A. Abrikosov   +27 more
core   +3 more sources

Waveguide bandgap engineering with an array of superconducting qubits

open access: yesnpj Quantum Materials, 2021
Waveguide quantum electrodynamics offers a wide range of possibilities to effectively engineer interactions between artificial atoms via a one-dimensional open waveguide.
Jan David Brehm   +5 more
doaj   +1 more source

On Quantum Corrections to Chern-Simons Spinor Electrodynamics [PDF]

open access: yes, 1997
We make a detailed investigation on the quantum corrections to Chern-Simons spinor electrodynamics. Starting from Chern-Simons spinor quantum electrodynamics with the Maxwell term $-1/(4\gamma){\int}d^3x F_{\mu\nu}F^{\mu\nu}$ and by calculating the ...
Chaichian, M.   +2 more
core   +2 more sources

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