Zobrazeno 1 - 10
of 426
pro vyhledávání: '"Savchuk, O."'
We study linear perturbations against static spherically symmetric background configurations of General Relativity with a real scalar field (SF), which is minimally coupled with gravity; it is non-linear due to the presence of the self-action potenti
Externí odkaz:
http://arxiv.org/abs/2307.04295
Autor:
Stashko, O. S., Savchuk, O. V., Satarov, L. M., Mishustin, I. N., Gorenstein, M. I., Zhdanov, V. I.
We study self-gravitating multi-pion systems (pion stars) in a state of the Bose condensate. To ensure stability of such stars, it is assumed that they are immersed in the lepton background. Two different phenomenological equations of state (EoS) for
Externí odkaz:
http://arxiv.org/abs/2303.06190
Autor:
Savchuk, O., Poberezhnyuk, R. V., Motornenko, A., Steinheimer, J., Gorenstein, M. I., Vovchenko, V.
The time evolution of particle number fluctuations in nuclear collisions at intermediate energies ($E_{\rm lab} = 1.23-10A$ GeV) is studied by means of the UrQMD-3.5 transport model. The transport description incorporates baryonic interactions throug
Externí odkaz:
http://arxiv.org/abs/2211.13200
Autor:
Savchuk, O., Motornenko, A., Steinheimer, J., Vovchenko, V., Bleicher, M., Gorenstein, M., Galatyuk, T.
It is demonstrated that the presence of a phase transition in heavy ion collisions, at beam energies that probe dense QCD matter, leads to a significant enhancement of the dilepton yield per produced pion due to the extended emission time. In additio
Externí odkaz:
http://arxiv.org/abs/2209.05267
Recent data of the HADES Collaboration in Au+Au central collisions at $\sqrt{s_{\rm NN}}=2.4$ GeV indicate large proton number fluctuations inside one unit of rapidity around midrapidity. This can be a signature of critical phenomena due to the stron
Externí odkaz:
http://arxiv.org/abs/2209.01883
A system of bosons studied within the mean field framework has two fascinating phenomena: a liquid-gas first order phase transition and Bose-Einstein condensation. Interplay between these two phenomena is being investigated. Depending on the mean-fie
Externí odkaz:
http://arxiv.org/abs/2206.00424
Autor:
Strubchevska K, Rachkovska A, Krenytska D, Karbovskyy V, Kozyk M, Secor B, Raksha N, Vovk T, Savchuk O, Falalyeyeva T, Kaminsky R, Ostapchenko L
Publikováno v:
International Journal of General Medicine, Vol Volume 16, Pp 6127-6135 (2023)
Kateryna Strubchevska,1 Antonina Rachkovska,2 Daryna Krenytska,2 Vitalii Karbovskyy,3 Marko Kozyk,1 Benjamin Secor,4 Nataliia Raksha,2 Tetiana Vovk,2 Olexii Savchuk,2 Tetyana Falalyeyeva,2 Rostyslav Kaminsky,5 Liudmyla Ostapchenko2 1Department of Int
Externí odkaz:
https://doaj.org/article/6de6d551582a41a784d1f7a7d25e0c5b
The Bose-Einstein condensation and the liquid-gas first order phase transition are studied in the interacting pion matter. Two phenomenological models are used: the mean-field model and the hybrid model. Free model parameters are fixed by fitting the
Externí odkaz:
http://arxiv.org/abs/2108.08140
Publikováno v:
Phys. Rev. C 103, 065201 (2021)
Equation of state and electric (isospin) charge fluctuations are studied for matter composed of interacting pions. The pion matter is described by self interacting scalar fields via a $\phi^4-\phi^6$ type Lagrangian. The mean-field approximation is u
Externí odkaz:
http://arxiv.org/abs/2102.02567
Autor:
Kaleniuk O., Savchuk O.
Publikováno v:
Науково-інформаційний вісник Івано-Франківського університету права імені Короля Данила Галицького, Vol 2, Iss 15(27), Pp 47-52 (2023)
Purpose. The purpose of the article is to analyze the philosophical and legal basis of the emergence of Roman Law, to reveal its axiological elements, as well as to show the systemic connection between the theoretical justification of these principle
Externí odkaz:
https://doaj.org/article/6bd6ba1f185c44e3b9e41bb83a692f74