Results 41 to 50 of about 14,310 (235)

Long-range gravitational-like interaction in a neutral atomic cold gas

, 2013
A quasi-resonant laser induces a long-range attractive force within a cloud of cold atoms. We take advantage of this force to build in the laboratory a system of particles with a one-dimensional gravitational-like interaction, at a fluid level of ...
A. Olivetti, B. Marcos, D. Lynden-Bell, D. Wilkowski, G. Camm, J. Barré, J. Binney, M. Chalony, P. H. Chavanis, V. Antonov, W. Thirring, Y. Elskens   +11 more
core   +1 more source

Spiking Neurons Learning Phase Delays [PDF]

, 2005
Time differences between the two ears are an important cue for animals to azimuthally locate a sound source. The first binaural brainstem nucleus, in mammals the medial superior olive, is generally believed to perform the necessary computations.
B. Grothe, B. Grothe, B. Grothe, Christian Leibold, G. Svirskis, J. Leo van Hemmen, P. D. Roberts, P. H. Smith, P. X. Joris, T. C. T. Yin, V. C. Kotak, W. Kistler   +11 more
core   +1 more source

Fractional diffusion with Neumann boundary conditions: the logistic equation

, 2012
Motivated by experimental studies on the anomalous diffusion of biological populations, we introduce a nonlocal differential operator which can be interpreted as the spectral square root of the Laplacian in bounded domains with Neumann homogeneous ...
Montefusco, Eugenio, Pellacci, Benedetta, Verzini, Gianmaria   +2 more
core   +2 more sources

A position-momentum EPR state of distantly-separated trapped atoms [PDF]

, 1999
We propose a scheme for preparing an EPR state in position and momentum of a pair of distantly-separated trapped atoms. The scheme utilizes the entangled light fields output from a nondegenerate optical parametric amplifier.
A. Aspect, A. Einstein, A. Furusawa, A. Peres, A. S. Parkins, A. S. Parkins, C. H. Bennett, C. H. Bennett, C. J. Hood, C. Monroe, C. W. Gardiner, C. W. Gardiner, D. Bohm, D. F. Walls, D. J. Wineland, D. Leibfried, G. Rempe, H. J. Carmichael, H. J. Kimble, H. J. Kimble, H. Zeng, J. F. Clauser, J. G. Rarity, J. I. Cirac, J. I. Cirac, J. S. Bell, J. S. Bell, J. Ye, K. Banaszek, K. Banaszek, L. Vaidman, L. Vaidman, M. D. Reid, M. D. Reid, M. D. Reid, O. Cohen, P. D. Drummond, P. Münstermann, Q. A. Turchette, Q. A. Turchette, S. A. Gardiner, S. J. van Enk, S. J. van Enk, S. J. van Enk, S. J. van Enk, S. L. Braunstein, S. Lloyd, T. Pellizzari, T. Pellizzari, Y. H. Shih, Z. Y. Ou, Z. Y. Ou, Z. Y. Ou   +52 more
core   +2 more sources

Strange Heat Flux in (An)Harmonic Networks

, 2003
We study the heat transport in systems of coupled oscillators driven out of equilibrium by Gaussian heat baths. We illustrate with a few examples that such systems can exhibit ``strange'' transport phenomena. In particular, {\em circulation} of heat flux
Eckmann, Jean-Pierre, Zabey, Emmanuel
core   +2 more sources

Imaging of High‐Risk Neuroblastoma: Recommendations From SIOPEN Radiology and Nuclear Medicine Specialty Committees

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Neuroblastoma is the most common extracranial solid tumor in early childhood. Its clinical behavior is highly variable, ranging from spontaneous regression to fatal outcome despite intensive treatment. The International Society of Pediatric Oncology Europe Neuroblastoma Group (SIOPEN) Radiology and Nuclear Medicine Specialty Committees ...
Annemieke Littooij, Catia Olianti, Herve Brisse, Pier Luigi Di Paolo, Maria Garganese, Tejas Kapadia, Jurgen Schaefer, Hugh Wallace, Simon Wan, Bart de Keizer, Irmina Sefic Pasic, Julian Rogasch   +11 more
wiley   +1 more source

Gradient and Lipschitz estimates for tug-of-war type games

, 2020
We define a random step size tug-of-war game, and show that the gradient of a value function exists almost everywhere. We also prove that the gradients of value functions are uniformly bounded and converge weakly to the gradient of the corresponding $p ...
Attouchi, Amal, Luiro, Hannes, Parviainen, Mikko   +2 more
core   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Avoiding bias in reconstructing the largest observable scales from partial-sky data

, 2011
Obscuration due to Galactic emission complicates the extraction of information from cosmological surveys, and requires some combination of the (typically imperfect) modeling and subtraction of foregrounds, or the removal of part of the sky.
Andrew Pontzen, Hiranya V. Peiris, N. Wiener, Stephen M. Feeney   +3 more
core   +1 more source

$O(N)$ fluctuations and lattice distortions in 1-dimensional systems [PDF]

, 2018
Statistical mechanics harmonizes mechanical and thermodynamical quantities, via the notion of local thermodynamic equilibrium (LTE). In absence of external drivings, LTE becomes equilibrium tout court, and states are characterized by several ...
Bellissard, Benenti, Bianca, Bonaldi, Cao, Casas-Vázquez, Chang, Chen, Chen, Chibbaro, Cohen, Colangeli, Conti, Conti, Conti, Criado-Sancho, Das, Davie, De Gregorio, De Groot, Delfini, Delfini, Dhar, Dhar, Evans, Falasco, Falcioni, Gallavotti, Gao, Giberti, Giberti, Hickman, Huang, Hurtado, Jepps, Jepps, Jou, Jou, Kaburaki, Kondepudi, Kreuzer, Landau, Lepri, Lepri, Lepri, Lepri, Lepri, Lepri, Lepri, Liu, Mai, Mejía-Monasterio, Mendl, Mishin, Morriss, Narayan, Onorato, Ortiz de, Peierls, Puglisi, Rieder, Rondoni, Rondoni, Salari, Seifert, Spohn, Spohn, van Beijeren, Wang, Xu, Zemansky, Zhong   +71 more
core   +2 more sources