Results 1  10
of
1,142
Correlated electronion dynamics in metallic systems
, 2008
"... Abstract In this paper we briefly discuss the problem of simulating nonadiabatic processes in systems that are usefully modelled using molecular dynamics. In particular we address the problems associated with metals, and describe two methods that can be applied: the Ehrenfest approximation and cor ..."
Abstract
 Add to MetaCart
and correlated electronion dynamics (CEID). The Ehrenfest approximation is used to successfully describe the friction force experienced by an energetic particle passing through a crystal, but is unable to describe the heating of a wire by an electric current. CEID restores the proper heating. Non
9 SCIENTIFIC HIGHLIGHT OF THE MONTH Correlated ElectronIon Dynamics
"... Correlated ElectronIon Dynamics (CEID) is an extension of molecular dynamics that allows us to introduce in a correct manner the exchange of energy between electrons and ions. The formalism is based on a systematic approximation (Small Amplitude Moment Expansion SAME). This formalism is introduce ..."
Abstract
 Add to MetaCart
Correlated ElectronIon Dynamics (CEID) is an extension of molecular dynamics that allows us to introduce in a correct manner the exchange of energy between electrons and ions. The formalism is based on a systematic approximation (Small Amplitude Moment Expansion SAME). This formalism
Analog of Rabi oscillations in resonant electronion systems
"... Quantum coherence between electron and ion dynamics, observed in organic semiconductors by means of ultrafast spectroscopy, is the object of recent theoretical and computational studies. To simulate this kind of quantum coherent dynamics, we have introduced in a previous article (J. Chem. Phys. 127 ..."
Abstract
 Add to MetaCart
. 127, 214104 (2007)) an improved computational scheme based on Correlated ElectronIon Dynamics (CEID). In this article, we provide a generalization of that scheme to model several ionic degrees of freedom and manybody electronic states. To illustrate the capability of this extended CEID, we study a
MODELING CRABBING DYNAMICS IN AN ELECTRONION COLLIDER
"... A local crabbing scheme requires π/2 (mod π) horizontal betatron phase advances from an interaction point to the crab cavities on each side of it. However, realistic phase advances generated by sets of quadrupoles or Final Focusing Blocks (FFB), between the crab cavities located in the expanded bea ..."
Abstract
 Add to MetaCart
beam regions and the IP differ slightly from π/2. To understand the effect of crabbing on the beam dynamics in this case, a simple model of the optics of the Medium Energy ElectronIon Collider (MEIC), including local crabbing, was developed using linear matrices and studied over multiple turns (1000
RIKEN Review No. 29 (June, 2000): Focused on Largescale Calculation of Electronic States Timedependent density functional molecular dynamics
"... We present a scheme to simulate the coupled electronion dynamics within the density functional theory. In our scheme, letting the electrons and ions follow the timedependent KohnSham equation and the Newton equation, respectively, ultrafast dynamics induced by electronic excitation is investigate ..."
Abstract
 Add to MetaCart
We present a scheme to simulate the coupled electronion dynamics within the density functional theory. In our scheme, letting the electrons and ions follow the timedependent KohnSham equation and the Newton equation, respectively, ultrafast dynamics induced by electronic excitation
THE COUPLED ELECTRONION MONTE CARLO METHOD
, 2005
"... Twenty years ago Car and Parrinello introduced an efficient method to perform Molecular Dynamics simulation for classical nuclei with forces computed on the “fly ” by a Density Functional Theory (DFT) based electronic calculation[1]. Because the method allowed study of the statistical mechanics of c ..."
Abstract

Cited by 2 (1 self)
 Add to MetaCart
Twenty years ago Car and Parrinello introduced an efficient method to perform Molecular Dynamics simulation for classical nuclei with forces computed on the “fly ” by a Density Functional Theory (DFT) based electronic calculation[1]. Because the method allowed study of the statistical mechanics
Spectroscopy Using Stimulated ElectronIon Recombination
, 2000
"... Introduction The spectroscopy of multiply ionized systems is a fruitful field of research in atomic physics with accelerators, having considerable impact on the understanding of inneratomic dynamics under conditions where relativistic and radiative corrections to the energy levels become important. ..."
Abstract
 Add to MetaCart
Introduction The spectroscopy of multiply ionized systems is a fruitful field of research in atomic physics with accelerators, having considerable impact on the understanding of inneratomic dynamics under conditions where relativistic and radiative corrections to the energy levels become important
Stochastic quantum molecular dynamics for finite and extended systems
"... We present a detailed account of the technical aspects of stochastic quantum molecular dynamics, an approach introduced recently by the authors [H. Appel and M. Di Ventra, Phys. Rev. B 80 212303 (2009)] to describe coupled electronion dynamics in open quantum systems. As example applications of th ..."
Abstract
 Add to MetaCart
We present a detailed account of the technical aspects of stochastic quantum molecular dynamics, an approach introduced recently by the authors [H. Appel and M. Di Ventra, Phys. Rev. B 80 212303 (2009)] to describe coupled electronion dynamics in open quantum systems. As example applications
Relativistic theory for localized electrostatic excitations in degenerate electronion plasmas
, 2014
"... A selfconsistent relativistic twofluid model is proposed for electronion plasma dynamics. A onedimensional geometry is adopted. Electrons are treated as a relativistically degenerate fluid, governed by an appropriate equation of state. The ion fluid is also allowed to be relativistic, but is co ..."
Abstract
 Add to MetaCart
A selfconsistent relativistic twofluid model is proposed for electronion plasma dynamics. A onedimensional geometry is adopted. Electrons are treated as a relativistically degenerate fluid, governed by an appropriate equation of state. The ion fluid is also allowed to be relativistic
EFFECTS OF CRAB CAVITIES ’ MULTIPOLE CONTENT IN AN ELECTRONION COLLIDER
"... The impact on the beam dynamics of the Medium Energy ElectronIon Colider (MEIC) due to the multipole content of the 750 MHz crab cavity was studied using thin multipole elements for 6D phase space particle tracking in ELEGANT. Target values of the sextupole component for the cavity’s field expansio ..."
Abstract
 Add to MetaCart
The impact on the beam dynamics of the Medium Energy ElectronIon Colider (MEIC) due to the multipole content of the 750 MHz crab cavity was studied using thin multipole elements for 6D phase space particle tracking in ELEGANT. Target values of the sextupole component for the cavity’s field
Results 1  10
of
1,142