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24 papers · 1 filter
Fragmentation of Expanding Shells in Spiral and Irregular Galaxies
S. Ehlerova, J. Palous, Ch. Theis +1
Conditions for the fragmentation of expanding shells due to gravitational instability are discussed. The self-similar analytical solution is compared with the results of 3-dimensio…
Random matrix approach to `nonuniversal' conductance
Petr Seba, Karol Zyczkowski, Jakub Zakrzewski
Recent experiments on the conductance of high quality quantum wires have revealed an unexpected feature: the quantization step of the conductance is apparently system dependent. We…
Photo-production of psi' Mesons at HERA
C. Adloff
Quasi-elastic (z >0.95) photo-production of psi' mesons has been observed at HERA for photon-proton centre-of-mass energies in the range 40 to 160 GeV. The psi' mesons were identif…
Boson mappings and four-particle correlations in algebraic neutron-proton pairing models
J. Dobes, S. Pittel
Neutron-proton pairing correlations are studied within the context of two solvable models, one based on the algebra SO(5) and the other on the algebra SO(8). Boson-mapping techniqu…
Search for Disoriented Chiral Condensates in 158 AGeV Pb+Pb Collisions
The WA98 Collaboration, M. M. Aggarwal et al
The restoration of chiral symmetry and its subsequent breaking through a phase transition has been predicted to create regions of Disoriented Chiral Condensates (DCC). This phenome…
Probability current tornado loops in three-dimensional scattering
Pavel Exner, Petr Seba
We consider scattering of a three-dimensional particle on a finite family of delta potentials. For some parameter values the scattering wavenctions exhibit nodal lines in the form…