25,522 research outputs found
Chiral dynamics of kaon-nucleon interactions, revisited
The anti-kaon nucleon system close to threshold is analyzed in view of the
new accurate DEAR kaonic hydrogen data. The calculations are performed using
chiral SU(3) effective field theory in combination with non-perturbative
schemes based on coupled channels. Several variants of such approaches are
compared with experimental data and the differences in the results are
discussed. Coulomb and isospin breaking effects turn out to be important and
are both taken into account. The pole structure of the Lambda(1405) resonance
close to the anti-kaon nucleon threshold is critically examined.Comment: 30 pages, 14 figures, 11 table
‘Going implicit’: using implicit measures in organizations
Implicit tests are increasingly being used and discussed in the field of Industrial-Organizational psychology. Despite their growing popularity, little is known about the types of implicit tests that exist, how they operationalize constructs, and how to improve their usefulness to predict relevant organizational behavior. We provide a timely contribution to practitioners and scholars who are considering adopting implicit measures in their organizations. By drawing on dual-processing theory, we reviewed the most prevalent implicit tests (Implicit Association Test, Picture Story Exercise, and Conditional Reasoning Test), and evaluated each against the following criteria: how they work, application areas, psychometric properties, perceptions of fairness, and faking potential. Based on prior empirical evidence, we provide ideas to improve these measures, how they may be applied in practice, and which avenues deserve future research. Together, these recommendations may enhance the value of implicit measures in organizations
Attosecond Streaking in the Water Window: A New Regime of Attosecond Pulse Characterization
We report on the first streaking measurement of water-window attosecond
pulses generated via high harmonic generation, driven by sub-2-cycle,
CEP-stable, 1850 nm laser pulses. Both the central photon energy and the energy
bandwidth far exceed what has been demonstrated thus far, warranting the
investigation of the attosecond streaking technique for the soft X-ray regime
and the limits of the FROGCRAB retrieval algorithm under such conditions. We
also discuss the problem of attochirp compensation and issues regarding much
lower photo-ionization cross sections compared with the XUV in addition to the
fact that several shells of target gases are accessed simultaneously. Based on
our investigation, we caution that the vastly different conditions in the soft
X-ray regime warrant a diligent examination of the fidelity of the measurement
and the retrieval procedure.Comment: 14 Pages, 12 figure
The Critical Role of Public Charging Infrastructure
Editors: Peter Fox-Penner, PhD, Z. Justin Ren, PhD, David O. JermainA decade after the launch of the contemporary global electric vehicle (EV) market, most cities face a major challenge preparing for rising EV demand. Some cities, and the leaders who shape them, are meeting and even leading demand for EV infrastructure. This book aggregates deep, groundbreaking research in the areas of urban EV deployment for city managers, private developers, urban planners, and utilities who want to understand and lead change
Theory of electron-plasmon coupling in semiconductors
The ability to manipulate plasmons is driving new developments in
electronics, optics, sensing, energy, and medicine. Despite the massive
momentum of experimental research in this direction, a predictive
quantum-mechanical framework for describing electron-plasmon interactions in
real materials is still missing. Here, starting from a many-body Green's
function approach, we develop an ab initio approach for investigating
electron-plasmon coupling in solids. As a first demonstration of this
methodology, we show that electron-plasmon scattering is the primary mechanism
for the cooling of hot carriers in doped silicon, it is key to explain measured
electron mobilities at high doping, and it leads to a quantum zero-point
renormalization of the band gap in agreement with experiment
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