and electronics, cavity perturbation theory describes methods for derivation of perturbation formulae for performance changes of a cavity resonator. These...

(QED), in particular for developing a relativistically invariant perturbation theory, and for renormalizing QED to one loop order. Schwinger was a physics...

the local density of electromagnetic states, Purcell effect, cavity perturbation theory, strong interaction with quantum emitters, superradiance. In computational...

slightly owing to solar-induced perturbations to the ionosphere (which compress the upper wall of the closed cavity)[citation needed] amongst other factors...

encapsulating the cavity can drastically impact the performance of the resonant circuit. This phenomenon can be explained using cavity perturbation theory. If a resonator...

problem by considering the work conducted by Keith Brueckner on perturbation theory. Working with Jeffrey Goldstone, he produced a solution for the case...

different future paths or trajectories. Thus, an arbitrarily small change or perturbation of the current trajectory may lead to significantly different future...

Coupled mode theory (CMT) is a perturbational approach for analyzing the coupling of vibrational systems (mechanical, optical, electrical, etc.) in space...

electro-magnetic theory behind a microwave resonant cavity thruster. A demonstration version of the drive was built and tested with different cavity shapes and...

from the UFP to MA phase is signaled by the cavity solution becoming unstable to disordered perturbations. When σ K = 0 {\displaystyle \sigma _{K}=0}...

wavelength of the modes was known from the geometry of the cavity and from electromagnetic theory, knowledge of the associated frequencies enabled a calculation...

stimulated transition rate can be calculated using time-dependent perturbation theory; however, the result can be summarized using Fermi's golden rule:...

time dependent perturbation theory in quantum mechanics. Calculation of A also requires second quantization since semi-classical theory cannot explain...

revealed that such computations were reliable only at a first order of perturbation theory, a problem already pointed out by Robert Oppenheimer. At higher orders...

the cavity (the flow in the cavity being subsonic). Small symmetric disturbances in the jet stream are amplified as they proceed toward the cavity (similar...

revealed that such computations were reliable only at a first order of perturbation theory, a problem already pointed out by Robert Oppenheimer. At higher orders...

(HF), Post-HF and density functional theory (DFT)) the implicit solvent models represent the solvent as a perturbation to the solute Hamiltonian. In general...

former quantum interference is important. On the other hand, in the perturbation-induced quantum scarring, some of the high-energy eigenstates of a locally...

to the formation of small vapor-filled cavities in the liquid. When subjected to higher pressure, these cavities, called "bubbles" or "voids", collapse...

surface of the cavity, which would cause mechanical perturbations. An antenna is needed in the setup to couple RF power to the cavity fields and, in turn...

photons, must obey Bose–Einstein statistics. Dirac's second-order perturbation theory can involve virtual photons, transient intermediate states of the...

equilibrium) if it is capable of returning to its equilibrium state after a perturbation (a capacity known as resilience) or does not experience unexpected large...

virtual energy potential of positive and negative energy. In quantum perturbation theory, it is sometimes said that the contribution of one-loop and multi-loop...

167(2248), 26–30. Tulin, M. P. (1963). Supercavitating flows - small perturbation theory. Laurel, Md, Hydronautics Inc. Niam J W (Dec 2014), Numerical Simulation...

using these formulas. Solar radiation pressure is a source of orbital perturbations. It significantly affects the orbits and trajectories of small bodies...

has undergone its renaissance period, sparked by the discoveries of perturbation-induced scars and many-body scars (see below). The existence of scarred...

tip on a fixed region. The soliton propagation carries the mechanical perturbation with little loss in energy across the material, which enables domain...

anaesthetic effect is exerted through some perturbation of the lipid bilayer. Several types of bilayer perturbations were proposed to cause anaesthetic effect...

not used in covariant perturbation theory, which has become standard for the treatment of relativistic quantum field theories such as quantum electrodynamics...

modification to a problem that can be solved exactly, a method known as perturbation theory. One simple way to compare classical to quantum mechanics is to consider...