22,515 research outputs found
Comments on a paper by B.Schulz about Bell's inequalities
Schulz claims to have constructed an actively local stochastic theory which
violates Bell's inequality. This is false
Deviations of Fischer-Tropsch products from an Anderson-Schulz-Flory distribution
Negative deviations from an Anderson-Schulz-Flory distribution have been observed for the product of the Fischer-Tropsch synthesis. The catalyst was a complex-derived iron-calcium catalyst promoted with cesium sulphate, therefore, neither carrier acidity nor shape selectivity can explain the deviations. This is the first time that chemical modifications of the catalyst are observed to result in negative ASF deviations
Spin-liquid model of the sharp resistivity drop in
We use the phenomenological model proposed in our previous paper [Phys. Rev.
Lett. {\bf 98}, 237001 (2007)] to analyse the magnetic field dependence of the
onset temperature for two-dimensional fluctuating superconductivity . We demonstrate that the slope of progressively goes down as
increases, such that the upper critical field progressively increases as
decreases. The quantitative agreement with the recent measurements of
in is achieved for the same parameter
value as was derived in our previous publication from the analysis of the
electron self energy.Comment: 4 pages, 2 figure
On the metal-insulator transition in the two-chain model of correlated fermions
The doping-induced metal-insulator transition in two-chain systems of
correlated fermions is studied using a solvable limit of the t-J model and the
fact that various strong- and weak-coupling limits of the two-chain model are
in the same phase, i.e. have the same low-energy properties. It is shown that
the Luttinger-liquid parameter K_\rho takes the universal value unity as the
insulating state (half-filling) is approached, implying dominant d-type
superconducting fluctuations, independently of the interaction strength. The
crossover to insulating behavior of correlations as the transition is
approached is discussed.Comment: 7 pages, 1 figur
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