arXiv subjects

A. Varga

Publications and source records attributed to A. Varga.

2 recordsLinked to original sources

arXiv2014

Construction of quantum states by special superpositions of coherent states

We consider the optimal approximation of certain quantum states of a harmonic oscillator with the superposition of a finite number of coherent states in phase space placed either on an ellipse or on a certain lattice. These scenarios are currently experimentally feasible. The parameters of the ellipse and the lattice and the coefficients of the constituent coherent states are optimized numerically, via a genetic algorithm, in order to obtain the best approximation. It is found that for certain quantum states the obtained approximation is better than the ones known from the literature thus far.

quant-ph↗

arXiv2005

Search for Sources of Primary Cosmic Rays at Energies Above 0.1 Pev at Tien Shan

Analysis of the experimental data of joint Russian - Hungarian research was carried out at Tien Shan station on the search of sources of primary cosmic rays (PCR) at energies 0.1-1.0 PeV. Maps of extensive air shower arrival directions were presented where the standard deviation of mean event numbers in equatorial co-ordinates exceeded a definite value. The excess of EAS number was observed from an Galaxy object - the SN remnant and some other directions. The young pulsar PSR 0656+14 located near the centre of this object.

astro-ph↗