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pro vyhledávání: '"Coddens, G"'
Autor:
Coddens, G.
We point out a loophole in the derivation of the Bell inequalities in the form proposed by Clauser, Horne, Shimony and Holt (CHSH). In this derivation it is assumed that statistical independence is a necessary consequence of locality, but this is not
Externí odkaz:
http://arxiv.org/abs/1309.6057
Autor:
Coddens, G.
Recently, Engel et al. discussed phonon broadening as observed in 3D quasicrystals on the basis of calculations on the Fibonacci chain. We show that the paper contains several statements and assumptions that are contradicted by factual truth.
Co
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Externí odkaz:
http://arxiv.org/abs/0705.1620
Autor:
Coddens, G.
Recently de Boissieu et al. proposed an explanation for the broadening of acoustic modes observed in quasicrystals (QC). It is the transcription of a well-known model used for glasses. We raise two fundamental objections against applying it to QC. Af
Externí odkaz:
http://arxiv.org/abs/cond-mat/0506600
Autor:
Coddens, G.
Recently Francoual et al. claimed to have observed the dynamics of long-wavelength phason fluctuations in i-AlPdMn quasicrystals. We will show that the data reported call for a more detailed development of the elasticity theory of Jaric and Nelsson i
Externí odkaz:
http://arxiv.org/abs/cond-mat/0401353
Autor:
Coddens, G.
We strongly disagree with a number of statements by Dolin{\v{s}}ek et al. about phason dynamics in quasicrystals (QCs).
Comment: 3 pages, 0 figures
Comment: 3 pages, 0 figures
Externí odkaz:
http://arxiv.org/abs/cond-mat/0312344
Autor:
Coddens, G.
We previously derived a theorem about the {\em coherent} quasielastic neutron-scattering signal from a $d$-dimensional lattice of $N$ molecules that are undergoing rotational jump diffusion (around an $n$-fold axis), assuming that there are no correl
Externí odkaz:
http://arxiv.org/abs/cond-mat/0212050
Autor:
Coddens, G.
We disagree with a number of statements by Dolinsek et al. about the specificity of phason dynamics in quasicrystals (QCs).
Comment: 2 pages, 0 figures, submitted to Physical Review B
Comment: 2 pages, 0 figures, submitted to Physical Review B
Externí odkaz:
http://arxiv.org/abs/cond-mat/0212023
The density correlation function F(q,t) of the two similar substituted aromatic liquids, Toluene and m-Toluidine, is studied by coherent neutron spin-echo and time-of-flight scattering for wave vectors q around the maximum q_max of the total static s
Externí odkaz:
http://arxiv.org/abs/cond-mat/0103599
We have measured the dynamic structure factor of liquid 4He in Vycor using neutron inelastic scattering. Well-defined phonon-roton (p-r) excitations are observed in the superfluid phase for all wave vectors 0.3 < Q < 2.15. The p-r energies and lifeti
Externí odkaz:
http://arxiv.org/abs/cond-mat/9911289
Autor:
Roepke, M., Holland-Moritz, E., Buechner, B., Berg, H., Lechner, R. E., Longeville, S., Fitter, J., Kahn, R., Coddens, G., Ferrand, M.
We have performed inelastic magnetic neutron scattering experiments on La(2-x-y)Sr(x)Nd(y)CuO(4) in order to study the Nd 4f-spin dynamics at low energies. In all samples we find at high temperatures a quasielastic line (Lorentzian) with a line width
Externí odkaz:
http://arxiv.org/abs/cond-mat/9908319