Antiproton-deuteron annihilation at low energies

Recent experimental studies of the antiproton-deuteron system at low energies have shown that the imaginary part of the antiproton-deuteron scattering length is smaller than the antiproton-proton one. Two- and three-body systems with strong annihilation are investigated and a mechanism explaining this unexpected relation between the imaginary parts of the scattering lengths is proposed.Comment: 6 pages, 3 figures, to be published in The European Physical Journal

Quantum Black Holes from Quantum Collapse

The Schwarzschild black hole can be viewed as the special case of the marginally bound Lema\^\i tre-Tolman-Bondi models of dust collapse which corresponds to a constant mass function. We have presented a midi-superspace quantization of this model for an arbitrary mass-function in a separate publication. In this communication we show that our solution leads both to Bekenstein's area spectrum for black holes as well as to the black hole entropy, which, in this context, is naturally interpreted as the loss of information of the original matter distribution within the collapsing dust cloud.Comment: LaTeX file, 6 pages, 1 figure, Paper re-written into sections, some references added, some elaborations, conclusions unchanged, to appear in Physical Review

Supervised Classifier Combination trough Generalized Additive Multi-Model

J. Kittler, F. Roli (Eds.), Lecture Notes in Computer Scienc

Supervised Classifier Combination through Generalized Additive Multi-Model

J. Kittler, F. Roli (Eds.), Lecture Notes in Computer Scienc