Results 41 to 50 of about 738,063 (344)

Laser Cooling of two trapped ions: Sideband cooling beyond the Lamb-Dicke limit [PDF]

, 1998
We study laser cooling of two ions that are trapped in a harmonic potential and interact by Coulomb repulsion. Sideband cooling in the Lamb-Dicke regime is shown to work analogously to sideband cooling of a single ion.
A. Steane, A. W. Vogt, B. E. King, C. Cohen-Tannoudij, C. Monroe, C. W. Gardiner, D. F. V. James, D. Stevens, F. Diedrich, F. Diedrich, G. Birkl, G. Morigi, G. Morigi, G. Morigi, H. C. Naegerl, H. Perrin, I. Marzoli, I. Waki, J. Dalibard, J. Eschner, J. I. Cirac, J. I. Cirac, J. I. Cirac, J. Javanainen, J. N. Tan, J. Yin, M. Drewsen, M. G. Raizen, P. Zoller, Q. A. Turchette, R. G. Brewer, R. G. DeVoe, R. J. Hughes, S. Chu, S. E. Hamann, S. Stenholm, V. V. Dodonov, W. Alt, W. D. Phillips, W. M. Itano, Y. Castin   +40 more
core   +2 more sources

Accelerating Luminescence in Nanostructures: Exploring the Physical Limits and Impact of Ultrafast Emission in Nanoscale Materials

Advanced Photonics Research, EarlyView.
This review highlights recent advances in accelerating luminescence in nanostructures through cooperative emission, resonator coupling, and nonlocal light–matter interactions. By unifying concepts such as excitonic superradiance, superfluorescence, and the plasmonic Purcell effect, it reveals physical limits of ultrafast emission and their potential ...
Masaaki Ashida, Koichi Okamoto, Takuya Matsuda, Hajime Ishihara   +3 more
wiley   +1 more source

Lamb Shift for static atoms outside a Schwarzschild black hole

, 2010
We study, by separately calculating the contributions of vacuum fluctuations and radiation reaction to the atomic energy level shift, the Lamb shift of a static two-level atom interacting with real massless scalar fields in the Boulware, Unruh and Hartle-
Yu, Hongwei, Zhou, Wenting
core   +1 more source

Mapping Charge Interactions in Intrinsically Disordered Proteins

Advanced Science, EarlyView.
This study presents analytical models to predict intrachain distances in intrinsically disordered proteins (IDPs), accounting for charge patterning, salt concentration, and electrostatic effects. Validated against single‐molecule FRET data, a minimal‐parameter polymer model is identified that captures key interactions and chain dimensions. These models
Michael Phillips, Andrea Holla, Magdalena Wojtas, Aritra Chowdhury, Andrea Sottini, Sebastian L. B. König, Natalie Mutter, Nick Lamb, Jonathan Huihui, Monika Lopko, Andrea Soranno, Daniel Nettels, Andrzej Ożyhar, Benjamin Schuler, Kingshuk Ghosh   +14 more
wiley   +1 more source

The BSE Crisis and the Price of Red Meat in the UK [PDF]

, 2003
This paper presents estimates of price functions for beef, lamb and pork for the UK economy which allow for the effects of the 1996 BSE crisis. Our estimates illustrate the importance of allowing for the joint endogeneity of prices in these markets.
Leeming, J., Turner, P.
core   +1 more source

Did the Indian Green Revolution Change the Farm Size–Productivity Relationship?

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT We examine the relationship between farm size and productivity during India's Green Revolution, a period of rapid technological transformation. Using a unique panel of over 5000 Indian farm households that spans the Green Revolution (1971–1999), we show that the classic (linear) inverse farm size–productivity relationship gradually evolved ...
Rabail Chandio, Leah E. M. Bevis
wiley   +1 more source

Ruminations Regarding Characteristics of Quintessential Adult Communicative Play

Behavioral Sciences
Greene and Pruim’s (2023) theory of adult communicative play (TACP) was developed as an effort to address considerations of: (a) pattern and novelty, (b) interpersonal connection, and (c) enjoyment as they pertain to adult conversational activities by ...
John O. Greene
doaj   +1 more source

Near-wall Lamb vector and its temporal–spatial evolution in the viscous sublayer of wall-bounded flows

AIP Advances, 2022
This paper gives the relation between the Lamb vector and fundamental surface quantities in the vicinity of a no-slip flat wall using the Taylor-series expansion solution of the Navier–Stokes equations for incompressible viscous flow.
Tao Chen, Tianshu Liu
doaj   +1 more source

The impact of the Russia–Ukraine war on stock prices, profits and perceptions in the food supply chain

Agribusiness, EarlyView.
Abstract The Russian invasion of Ukraine in February 2022 had profound consequences for the global economy. As both countries are major commodity exporters, the food value chain was also affected. This study investigates the impact of the invasion on stock prices, profitability and sentiments of agribusinesses along the food supply chain by using an ...
Julia Höhler, Ivo Harmens, Alfons Oude Lansink   +2 more
wiley   +1 more source

Sixth-Order Vacuum-Polarization Contribution to the Lamb Shift of the Muonic Hydrogen

, 1999
The sixth-order electron-loop vacuum-polarization contribution to the $2P_{1/2} - 2S_{1/2}$ Lamb shift of the muonic hydrogen ($\mu^{-} p^+$ bound state) has been evaluated numerically. Our result is 0.007608(1) meV.
C. Caso, D. B. Leinweber, D. Taqqu, G. G. Simon, G. Källén, G. P. Lepage, K. G. Chetyrkin, K. Pachucki, K. Pachucki, K. Pachucki, L. N. Hand, M. Nio, P. A. Baikov, P. Cvitanović, T. Drapers, T. Kinoshita, T. Kinoshita, T. Kinoshita, Th. Udem   +18 more
core   +1 more source