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35 papers · 1 filter
Bound states in the phase diagram of the extended Hubbard model
M. Bak
The papaer shows how the known, exact results for the two electron bound states can modify the ground state phase diagram of extended Hubbard model (EHM) for on-site attraction, in…
Maximal superintegrability of Benenti systems
M. Blaszak, A. Sergyeyev
For a class of Hamiltonian systems naturally arising in the modern theory of separation of variables, we establish their maximal superintegrability by explicitly constructing the a…
Atomic Squeezing under Collective Emission
V. I. Yukalov, E. P. Yukalova
Atomic squeezing is studied for the case of large systems of radiating atoms, when collective effects are well developed. All temporal stages are analyzed, starting with the quantu…
Spin-dependent transport through magnetic nanojunctions
Kamil Walczak, Gloria Platero
Coherent electronic transport through a molecular device is studied using non-equilibrium Green's function (NEGF) formalism. Such device is made of a carbon nanowire which is conne…
Zero-bias anomaly in cotunneling transport through quantum-dot spin valves
Ireneusz Weymann, Józef Barnaś, Jürgen König +2
We predict a new zero-bias anomaly in the differential conductance through a quantum dot coupled to two ferromagnetic leads with antiparallel magnetization. The anomaly differs in…
Cluster AgeS Experiment (CASE): SX Phe stars from the globular cluster Omega Centauri
A. Olech, W. A. Dziembowski, A. A. Pamyatnykh +4
We present an analysis and interpretation of oscillation spectra for all 69 SX Phoenicis stars discovered in the field of the cluster. For most of the stars we have reliable absolu…