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10 papers · 1 filter
Continuous Variables (2,3) Threshold Quantum Secret Sharing Schemes
A. M. Lance, T. Symul, W. P. Bowen +3
We present two experimental schemes to perform continuous variable (2,3) threshold quantum secret sharing on the quadratures amplitudes of bright light beams. Both schemes require…
Einstein-Maxwell fields generated from the gamma-metric and their limits
L. Richterek, J. Novotny, J. Horsky
Two solutions of the coupled Einstein-Maxwell field equations are found by means of the Horsky-Mitskievitch generating conjecture. The vacuum limit of those obtained classes of spa…
Approximate tight-binding sum rule for the superconductivity related change of c-axis kinetic energy in multilayer cuprate superconductors
Dominik Munzar, Todd Holden, Christian Bernhard
We present an extension of the c-axis tight-binding sum rule discussed by Chakravarty, Kee, and Abrahams [Phys. Rev. Lett. 82, 2366 (1999)] that applies to multilayer high-Tc cupra…
Poisson-Lie T-plurality
Rikard von Unge
We extend the path-integral formalism for Poisson-Lie T-duality to include the case of Drinfeld doubles which can be decomposed into bi-algebras in more than one way. We give the c…
Detection of an optical transient following the 13 March 2000 short/hard gamma-ray burst
A. J. Castro-Tirado, J. M. Castro Cerón, J. Gorosabel +21
We imaged the error box of a gamma-ray burst of the short (0.5 s), hard type (GRB 000313), with the BOOTES-1 experiment in southern Spain, starting 4 min after the gamma-ray event,…
Josephson plasma resonance and phonon anomalies in trilayer Bi_2Sr_2Ca_2Cu_3O_10 superconductor
A. V Boris, D. Munzar, N. N. Kovaleva +8
The far-infrared (FIR) c axis conductivity of a Bi2223 crystal has been measured by ellipsometry. Below T a strong absorption band develops near 500 cm , corresponding t…