1,478 research outputs found
Park--Tarter Matrix for a Dyon--Dyon System
The problem of separation of variables in a dyon--dyon system is discussed. A
linear transformation is obtained between fundamental bases of this system.
Comparison of the dyon--dyon system with a 4D isotropic oscillator is carried
out.Comment: 9 pages, LaTeX fil
Quantum Systems with Hidden Symmetry. Interbasis Expansions
This monograph is the English version of the book "Quantum systems with
hidden symmetry. Interbasis expansions" published in 2006 by the publishing
house FIZMATLIT (Moscow) in Russian. When compiling this version of the book,
typos and inaccuracies noted since the release of the Russian edition have been
corrected
All-particle primary energy spectrum in the 3-200 PeV energy range
We present all-particle primary cosmic-ray energy spectrum in the 3-200 PeV
energy range obtained by a multi-parametric event-by-event evaluation of the
primary energy. The results are obtained on the basis of an expanded EAS data
set detected at mountain level (700 g/cm^2) by the GAMMA experiment. The energy
evaluation method has been developed using the EAS simulation with the SIBYLL
interaction model taking into account the response of GAMMA detectors and
reconstruction uncertainties of EAS parameters. Nearly unbiased (<5%) energy
estimations regardless of a primary nuclear mass with an accuracy of about
15-10% in the 3-200 PeV energy range respectively are attained. An irregularity
('bump') in the spectrum is observed at primary energies of ~74 PeV. This bump
exceeds a smooth power-law fit to the data by about 4 standard deviations. Not
rejecting stochastic nature of the bump completely, we examined the systematic
uncertainties of our methods and conclude that they cannot be responsible for
the observed feature.Comment: Accepted by J.Phys.G: Nucl.Part.Phy
4D singular oscillator and generalized MIC-Kepler system
It is shown that the generalized MIC-Kepler system and four-dimensional
singular oscillator are dual to each other and the duality transformation is
the generalized version of the Kustaanheimo-Stiefel transformation.Comment: 6 page
- …