Zobrazeno 1 - 10
of 94
pro vyhledávání: '"MOCANU, GABRIELA"'
We investigate the creation of dark matter particles as a result of the decay of the scalar field in the framework of warm inflationary models, by using the irreversible thermodynamics of open systems with matter creation/annihilation. We consider th
Externí odkaz:
http://arxiv.org/abs/2303.02464
Autor:
Mocanu, Gabriela Raluca
The mean square displacement and instantaneous diffusion coefficient for different configurations of charged particles in stochastic motion are calculated by numerically solving the associated equations of motion. The method is suitable for obtaining
Externí odkaz:
http://arxiv.org/abs/1906.10402
We give closed forms for several families of Heun functions related to classical entropies. By comparing two expressions of the same Heun function, we get several combinatorial identities generalizing some classical ones.
Comment: Submitted to A
Comment: Submitted to A
Externí odkaz:
http://arxiv.org/abs/1801.05054
We consider a family of probability distributions depending on a real parameter and including the binomial, Poisson and negative binomial distributions. The corresponding index of coincidence satisfies a Heun differential equation and is a logarithmi
Externí odkaz:
http://arxiv.org/abs/1801.05003
We consider the indices of coincidence for the binomial, Poisson, and negative binomial distributions. They are related in a simple manner to the R\'{e}nyi entropy and Tsallis entropy. We investigate some families of Heun functions containing these i
Externí odkaz:
http://arxiv.org/abs/1801.05004
Autor:
Harko, Tiberiu, Mocanu, Gabriela
Publikováno v:
Eur. Phys. J. C (2016) 76:160
The study of the Brownian motion of a charged particle in electric and magnetic fields fields has many important applications in plasma and heavy ions physics, as well as in astrophysics. In the present paper we consider the electromagnetic radiation
Externí odkaz:
http://arxiv.org/abs/1603.01750
Publikováno v:
JCAP 11 (2015) 027
The possibility that dark matter may be in the form of a Bose-Einstein Condensate (BEC) has been extensively explored at galactic scale. In particular, good fits for the galactic rotations curves have been obtained, and upper limits for the dark matt
Externí odkaz:
http://arxiv.org/abs/1510.06275
Publikováno v:
MNRAS 453, 2982:2991 (2015)
We investigate the transition to Self Organized Criticality in a two-dimensional model of a flux tube with a background flow. The magnetic induction equation, represented by a partial differential equation with a stochastic source term, is discretize
Externí odkaz:
http://arxiv.org/abs/1508.02305
Publikováno v:
Astrophys Space Sci (2015) 357:84
A simplified one dimensional grid is used to model the evolution of magnetized plasma flow. We implement diffusion laws similar to those so-far used to model magnetic reconnection with Cellular Automata. As a novelty, we also explicitly superimpose a
Externí odkaz:
http://arxiv.org/abs/1503.01980
Publikováno v:
Eur. Phys. J. C (2014) 74:2900
We consider a description of the stochastic oscillations of the general relativistic accretion disks around compact astrophysical objects interacting with their external medium based on a generalized Langevin equation with colored noise, which accoun
Externí odkaz:
http://arxiv.org/abs/1405.2824