搜索结果: 1-15 共查到“理学 Adiabatic”相关记录71条 . 查询时间(0.054 秒)
EVOLUTION OF ADIABATIC INVARIANTS IN STOCHASTIC AVERAGING
STOCHASTIC AVERAGING ADIABATIC INVARIANTS
2015/9/29
An averaging problem with Markov fast motion is
considered. The di usive limit is obtained for the evolution of adabatic invariants under the assumption that the averaged motion
is ergodic on almost...
Robust optimization of adiabatic tapers for coupling to slow-light photonic-crystal waveguides
Tapered structure coupling photonic crystal waveguides candles nano
2015/8/7
We investigate the design of taper structures for coupling to slow-light modes of various photonic-crystal waveguides while taking into account parameter uncertainties inherent in practical fabricatio...
Non-adiabatic KPP fronts with an arbitrary Lewis number
Non-adiabatic KPP arbitrary Lewis number
2015/7/14
We establish existence of travelling fronts in thermo-diffusive systems of the KPP type in a shear flow with an arbitrary Lewis number and a positive heat-loss at the boundary. We then prove that the ...
Making the best of mixed-field orientation of polar molecules: A recipe for achieving adiabatic dynamics in an electrostatic field combined with laser pulses
mixed-field orientation of polar molecules recipe adiabatic dynamics electrostatic field laser pulses Chemical Physics
2012/4/24
We have experimentally and theoretically investigated the mixed-field orientation of rotational-state-selected OCS molecules and we achieve strong degrees of alignment and orientation. The applied mod...
The plasma analog of an adiabatic lapse rate (or temperature variation with height) in atmospheric physics is obtained. A new source of plasma temperature gradient in a binary ion species mixture is f...
Non-adiabatic transitions in a massless scalar field
Non-adiabatic transitions massless scalar field Mathematical Physics
2012/4/17
We consider the dynamics of a massless scalar field with time-dependent sources in the adiabatic limit. This is an example of an adiabatic problem without spectral gap. The main goal of our paper is t...
Consistency of the adiabatic theorem and perturbation theory
adiabatic theorem perturbation theory Quantum Physics
2011/10/9
Abstract: We present an analysis of the adiabatic approximation to understand when it applies, in view of the recent criticisms and studies for the validity of the adiabatic theorem. We point out that...
Microscopic and non-adiabatic Schrödinger equation derived from the Generator Coordinate Method based on 0 and 2 quasiparticle HFB states
Generator Coordinate Method Schrö dinger equation
2011/7/20
A new approach called the Schr\"odinger Collective Intrinsic Model (SCIM) has been developed to achieve a microscopic description of the coupling between collective and intrinsic excitations.
Adiabatic nonlinear waves with trapped particles: Part II. Wave dispersion
adiabatic nonlinear waves trapped particles Wave dispersion
2011/10/8
Abstract: A general nonlinear dispersion relation is derived in a nondifferential form for a quasistationary sinusoidal Langmuir wave in collisionless plasma, allowing for an arbitrary distribution of...
Adiabatic nonlinear waves with trapped particles: Part I. General formalism
adiabatic nonlinear waves General formalism trapped particles Plasma Physics
2011/10/8
Abstract: A Lagrangian formalism is developed for a general nondissipative quasiperiodic nonlinear wave with trapped particles in collisionless plasma. The adiabatic time-averaged Lagrangian density L...
Adiabatic Theorem for Discrete Time Evolution
adiabatic theorem quantum map quantum circuit Quantum Physics
2011/10/8
Abstract: A proof of the adiabatic theorem for quantum systems whose time evolution proceeds along discrete time, e.g., quantum maps and quantum circuits, is shown.
Adiabatic nonlinear waves with trapped particles: Part I. General formalism
Adiabatic nonlinear waves trapped particles General formalism
2011/8/4
Abstract: A Lagrangian formalism is developed for a general nondissipative quasiperiodic nonlinear wave with trapped particles in collisionless plasma. The adiabatic time-averaged Lagrangian density L...
Adiabatic nonlinear waves with trapped particles: Part II. Wave dispersion
Adiabatic nonlinear waves trapped particles Wave dispersion
2011/8/4
Abstract: A general nonlinear dispersion relation is derived in a nondifferential form for a quasistationary sinusoidal Langmuir wave in collisionless plasma, allowing for an arbitrary distribution of...
Adiabatic nonlinear waves with trapped particles: Part III. Wave dynamics
Adiabatic nonlinear waves trapped particles Wave dynamics
2011/8/4
Abstract: The evolution of waves with trapped particles is described within the Lagrangian model developed in Paper I. One-dimensional nonlinear Langmuir waves with deeply trapped electrons are addres...
Storage and Adiabatic Cooling of Polar Molecules in a Microstructured Trap
adiabatic cooling cold molecules electrostatic trapping
2011/8/17
Abstract: We demonstrate loading, trapping and adiabatic cooling of polar molecules in a new type of electric trap. The trap consists of two microstructured capacitor plates with an additional perimet...