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6 papers · 1 filter
Quantum de Rham complex with differential
N. Bazunova, A. Borowiec, R. Kerner
In this work, we construct the de Rham complex with differential operator d satisfying the Q-Leibniz rule, where Q is a complex number, and the condition on an associative…
Peculiarities of the spectrum of strongly correlated electrons
A. Sherman, M. Schreiber
Hole and spin Green's functions of the two-dimensional t-J model of the Cu-O planes are calculated in an approximation which retains the rotation symmetry in the paramagnetic state…
Is KPD 1930+2752 a good SN Ia progenitor?
E. Ergma, A. V. Fedorova, L. R. Yungelson
We investigate the evolution of a binary system which initially has an orbital period of 2^h 17^m and contains a 0.5 M_sun helium star with a white dwarf companion of 0.97 M_sun, s…
What can we learn from the surface chemical composition of the optical companions of Soft X-ray transients?
Ene Ergma, Marek J. Sarna
Several evolutionary sequences with low--mass secondaries (=1.25, 1.5 and 1.7) and black hole accretors (=5 and 10) are calculated. The angular…
"Dynamical" non-minimal higher-spin interaction and gyromagnetic ratio g=2
I. Ots, R. Saar, R. -K. Loide +1
The field-dependent invariant representation (the "dynamical" representation) of the Poincaré algebra is considered as a dynamical principle in order to get the corresponding "dyna…
Origin and possible birthplace of the extreme runaway star HIP 60350
P. Tenjes, J. Einasto, H. M. Maitzen +1
Using the recently determined spatial velocity components of the extreme runaway star HIP 60350 and a gravitation potential model of the Galaxy, we integrate the orbit of HIP 60350…