Results 71 to 80 of about 3,473,869 (204)

Dynamic splitting of a Bose-Einstein Condensate

, 2000
We study the dynamic process of splitting a condensate by raising a potential barrier in the center of a harmonic trap. We use a two-mode model to describe the phase coherence between the two halves of the condensate.
A. Galindo, A. Sinatra, A. Sinatra, A. Smerzi, A. Smerzi, A.J. Leggett, A.J. Leggett, B.P. Anderson, C. Menotti, C.K. Law, D. Jaksch, E.M. Wright, F. Sols, G.J. Milburn, I. Zapata, J. I. Cirac, J. Javanainen, J. Javanainen, J. Javanainen, J. Javanainen, J. R. Anglin, K. Berg-Sørensen, K. Mølmer, M. Lewenstein, M.L. Chiofalo, P. Villain, P. Zoller, R.W. Spekkens, V.M. Perez-García, W. Ketterle   +29 more
core   +1 more source

Une identité impériale sans Empire? Le sens de la politique de décolonisation britannique

Revue LISA, 2007
Britain’s history as a nation and a great power cannot be dissociated from the concept of imperialism. The object of this article will be to study the way Britain managed to adapt her imperial identity to the post-colonial world that her own ...
Virginie Barrier-Roiron
doaj   +1 more source

The Euclidean resonance and quantum tunneling

, 2002
The extremely small probability of tunneling through an almost classical potential barrier may become not small under the action of the specially adapted non-stationary signal which selects the certain particle energy E_R.
Ivlev, B. I.
core   +1 more source

The opaque square

, 2013
The problem of finding small sets that block every line passing through a unit square was first considered by Mazurkiewicz in 1916. We call such a set {\em opaque} or a {\em barrier} for the square. The shortest known barrier has length $\sqrt{2}+ \frac{\
Dumitrescu, Adrian, Jiang, Minghui
core   +1 more source

Effect of edge transmission and elastic scattering on the resistance of magnetic barriers

, 2007
Strong magnetic barriers are defined in two-dimensional electron gases by magnetizing dysprosium ferromagnetic platelets on top of a Ga[Al]As heterostructure. A small resistance across the barrier is observed even deep inside the closed regime.
B. L. Gallagher, J. Hong, M. Cerchez, N. Schulz, S. Hugger, T. Heinzel   +5 more
core   +1 more source

Enhancement and suppression of tunneling by controlling symmetries of a potential barrier

, 2010
We present a class of 2D systems which shows a counterintuitive property that contradicts a semi classical intuition: A 2D quantum particle "prefers" tunneling through a barrier rather than traveling above it.
B. N. Zakhariev, Denys I. Bondar, H. Weyl, I. Amirkhanov, J. Ankerhold, M. Razavy, Misha Yu. Ivanov, S. Takagi, Wing-Ki Liu, Y. J. Lee, Y. M. Shirokov   +10 more
core   +1 more source

Microscopic self-consistent theory of Josephson junctions including dynamical electron correlations

, 2000
We formulate a fully self-consistent, microscopic model to study the retardation and correlation effects of the barrier within a Josephson junction. The junction is described by a series of planes, with electronic correlation included through a local ...
Aslamazov L G, Balashov D, Barrera A S, Brandt U, Brinkman A, Cannizares J S, de Gennes P G, Dolby P, Economou E N, Freericks J K, Freericks J K, Greene L H, Greene L H, Haberkorn W, Haydock R, Haydock R, Hettler M H, Holstein T, J K Freericks, Kulik I O, Kuprianov M Yu, Kuprianov M Yu, Kupriyanov M Yu, Kümmel R, Likharev K K, Likharev K K, Martin A M, Martin A M, McCumber D E, McCumber D E, Miller P, Mukhanov O A, Naveh Y, Nevirkovets I P, Ovchinnikov Yu N, P Miller, Sharvin Yu V, Sipr O, Zaitsev A V   +38 more
core   +1 more source

Paradoxes sur le public.

EspacesTemps.net, 2007
L’État contemporain ne se rapporte pas aux citoyens de manière individualisée et concrète, il les convoque plutôt comme une masse formelle et dépersonnalisée. Par une instrumentalisation de la culture et des arts, il en fait des consommateurs d’œuvres et
Thibaut Barrier
doaj  

Understanding fluctuating climate change risk perceptions through the lens of trust: a study of Great Barrier Reef region residents

npj Climate Action
Public perceptions of climate change risks are fundamental to public support for climate action. From a decade of surveying residents in the Great Barrier Reef region (2013–2023; n = 9920), we found that climate risk perceptions have fluctuated markedly,
Elizabeth V. Hobman, Matthew I. Curnock, Michelle Dyer, Cindy Huchery, Petina L. Pert, Emilee Chamberland, Aditi Mankad   +6 more
doaj   +1 more source

Application of a new MDCKII-MDR1 cell model to measure the extent of drug distribution in vitro at equilibrium for prediction of in vivo unbound brain-to-plasma drug distribution

Fluids and Barriers of the CNS
Intro: Reliable estimates of drug uptake from blood to brain parenchyma are crucial in CNS drug discovery and development. While in vivo Kp,uu,brain estimates are the gold standard for investigating brain drug disposition, animal usage is a limitation to
Kristine Langthaler, Christopher R. Jones, Lasse Saaby, Christoffer Bundgaard, Birger Brodin   +4 more
doaj   +1 more source