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Title Fluctuations in non-ideal pion gas with dynamically fixed particle number Author info E. E. Kolomeitsev, D. N. Voskresensky Author Kolomeitsev Evgeni E. 1970- (50%) UMBFP06 - Katedra fyziky
Co-authors Voskresensky Dmitri (50%)
Source document Nuclear Physics A. Vol. 973, (2018), pp. 89-103. - Amsterdam : Elsevier B.V., 2018 Keywords heavy ion collisions fluctuations Hartree approximation Bose-Einsteinova kondenzácia - Bose-Einstein condensation Language English Country Netherlands systematics 53 Annotation We consider a non-ideal hot pion gas with the dynamically fixed number of particles in the model with the λφ4interaction. The effective Lagrangian for the description of such a system is obtained after dropping the terms responsible for the change of the total particle number. Reactions π+π−↔π0π0, which deter-mine the isospin balance of the medium, are permitted. Within the self-consistent Hartree approximation we compute the effective pion mass, thermodynamic characteristics of the system and the variance of the particle number at temperatures above the critical point of the induced Bose–Einstein condensation when the pion chemical potential reaches the value of the effective pion mass. We analyze conditions for the con-densate formation in the process of thermalization of an initially non-equilibrium pion gas. The normalized variance of the particle number increases with a temperature decrease but remains finite in the critical point of the Bose–Einstein condensation. This is due to the non-perturbative account of the interaction and is in contrast to the ideal-gas case. In the kinetic regime of the condensate formation the variance is shown to stay finite also URL Link na plný text Public work category ADC No. of Archival Copy 43902 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
unrecognised
Title Charged rho-meson condensation in neutron stars Author info Evgeni E. Kolomeitsev, K. A. Maslov ... [et al.] Author Kolomeitsev Evgeni E. 1970- (34%) UMBFP06 - Katedra fyziky
Co-authors Maslov K. A. (33%)
Voskresensky Dmitri (33%)
Source document Nuclear Physics A. Vol. 970, (2018), pp. 291-315. - Amsterdam : Elsevier B.V., 2018 Keywords neutron stars equation of state condensation Language English Country Netherlands systematics 53 Annotation We extend relativistic mean-field models with hadron masses and meson–baryon coupling constants dependent on the scalar field σ, including hyperons and (1232)baryons, to incorporate a possibility of the charged ρmeson condensation in neutron star matter. The influence of the ρ−condensation on the equation of state proves to be strongly model dependent. In our models of one type (KVORcut-based ones) the ρ−condensation arises by a second-order phase transition above a critical density and the maximum value of the neutron star mass diminishes only slightly. The matter composition changes more significantly. In our models of other type (MKVOR*-based ones), if the system is considered at fixed density, the ρ−condensation arises by a second-order phase transition at the baryon density n =n(II)c,ρand at a slightly higher density n =n(I)c,ρthere occurs a first-order phase transition. In a neutron star matter starting with a density n <n(II)c,ρthere appears a region of a mixed phase, or the system is described by Maxwell construction, that results in a substantial decrease of the value of the maximum neutron star mass. Nevertheless in the models under consideration the observational constraint on the maximum neutron star mass is fulfilled. Besides, in MKVOR*-based models the appearance of the ρ−condensate is accompanied by a strong rearrangement of the matter composition. Dependence of the results on a choice of the ρmeson scaling functions for the effective ρmeson mass and coupling constants is also investigated URL Link na plný text Public work category ADC No. of Archival Copy 43905 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika unrecognised
Title Nuclear Physics A Issue data Amsterdam : Elsevier B.V. , 2018 ISSN 0375-9474 1873-1554 Form. Descr. časopisy - journals Year, No. Vol. 973 (2018) Language English Country Netherlands URL Link na zdrojový dokument Public work category GII Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References - PERIODIKÁ - Súborný záznam periodika (1) - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika ARTICLES 2018: Fluctuations in non-ideal pion gas with dynamically fixed particle number 
journal
Title Nuclear Physics A Issue data Amsterdam : Elsevier B.V. , 2018 ISSN 0375-9474 1873-1554 Form. Descr. časopisy - journals Year, No. Vol. 970 (2018) Language English Country Netherlands URL Link na zdrojový dokument Public work category GII Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References - PERIODIKÁ - Súborný záznam periodika (1) - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika ARTICLES 2018: Charged rho-meson condensation in neutron stars journal
Title Delta isobars in relativistic mean-field models with sigma-scaled hadron masses and couplings Author info E. E. Kolomeitsev, K. A. Maslov, D. N. Voskresensky Author Kolomeitsev Evgeni E. 1970- (98%) UMBFP06 - Katedra fyziky
Co-authors Maslov Konstantin A. (1%)
Voskresensky Dmitri (1%)
Source document Nuclear Physics A. Vol. 961 (2017), pp. 106-141. - Amsterdam : Elsevier B.V., 2017 Keywords neutron stars equation of state heavy ion collisions Language English Country Netherlands systematics 53 Annotation We extend the relativistic mean-field models with hadron masses and meson-baryon coupling constants dependent on the scalar sigma field, studied previously to incorporate Delta(1232) baryons. Available empirical information is analyzed to put constraints on the couplings of Delta s with meson fields. Conditions for the appearance of Delta s are studied. We demonstrate that with inclusion of the Delta s our equations of state continue to fulfill majority of known empirical constraints including the pressure-density constraint from heavy-ion collisions, the constraint on the maximum mass of the neutron stars, the direct Urea and the gravitational baryon mass ratio constraints. (C) 2017 Elsevier B.V. All rights reserved. Public work category ADC No. of Archival Copy 39909 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika unrecognised
Title Nuclear Physics A Issue data Amsterdam : Elsevier B.V. , 2017 ISSN 0375-94741873-1554 Form. Descr. časopisy - journals Year, No. Vol. 961 (2017) Language English Country Netherlands URL Link na zdrojový dokument Public work category GII Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References - PERIODIKÁ - Súborný záznam periodika (1) - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika ARTICLES 2017: Delta isobars in relativistic mean-field models with sigma-scaled hadron masses and couplings journal
Title Nuclear Physics A Issue data Amsterdam : Elsevier B.V. , 2016 ISSN 0375-94741873-1554 Form. Descr. časopisy - journals Year, No. Vol. 950 (2016) Language English Country Netherlands URL Link na zdrojový dokument Public work category GII Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References - PERIODIKÁ - Súborný záznam periodika (1) - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika ARTICLES 2016: Relativistic mean-field models with scaled hadron masses and couplings journal
Title Relativistic mean-field models with scaled hadron masses and couplings Subtitle hyperons and maximum neutron star mass Author info K. A. Maslov, E. E. Kolomeitsev, D. N. Voskresensky Author Maslov K. A. (1%)
Co-authors Kolomeitsev Evgeni E. 1970- (98%) UMBFP06 - Katedra fyziky
Voskresensky Dmitri (1%)
Source document Nuclear Physics A. Vol. 950 (2016), pp. 64-109. - Amsterdam : Elsevier B.V., 2016 Keywords stavová rovnica equation of state neutrónové hviezdy neutron stars fyzika - physics Language English Country Netherlands systematics 53 Public work category ADC No. of Archival Copy 36997 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika unrecognised
Title Nuclear Physics A Issue data Amsterdam : Elsevier B.V. , 2009 ISSN 0375-94741873-1554 Form. Descr. časopisy - journals Year, No. Vol. 830 (2009) Language English Country Netherlands URL Link na zdrojový dokument Public work category GII Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References - PERIODIKÁ - Súborný záznam periodika (1) - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika ARTICLES 2009: The use of Kolmogorov-Smirnov test in event-by-event analysis journal
Title The use of Kolmogorov-Smirnov test in event-by-event analysis Author info Boris Tomášik ... [et al.] Author Tomášik Boris 1972- (40%) UMBFP06 - Katedra fyziky
Co-authors Melo Ivan (40%)
Torrieri Giorgio (10%)
Vogel Sascha (5%)
Bleicher Marcus (5%)
Action International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2009) . medzinárodná konferencia , 21. , Knoxville , 30.03.-04.04.2009 Source document Nuclear Physics A. Vol. 830 (2009), pp. 195C-198C. - Amsterdam : Elsevier B.V., 2009 Keywords heavy ion collisions fluctuations Language English Country Netherlands Annotation We propose to use the Kolmogorov-Smirnov test to uncover non-statistical differences between events created in heavy ion collisions within the same centrality class. The advantage of the method over other approaches which are currently in use, is that it is sensitive to any difference between the events and is not restricted to simple moments of the distribution of hadrons. The particular application examined here is the identification of the fireball decay due to spinodal fragmentation and/or sudden rise of the bulk viscosity. Public work category ADC No. of Archival Copy 16713 Repercussion category CHEN, D. - MACLACHLAN, S. - KILMER, M. Iterative parameter-choice and multigrid methods for anisotropic diffusion denoising. In Siam journal on scientific computing. ISSN 1064-8275, 2011, vol. 33, no. 5, pp. 2972-2994.
ZHANG, Yudong - WANG, Shuihua - PHILLIPS, Preetha - JI, Genlin. Binary PSO with mutation operator for feature selection using decision tree applied to spam detection. In Knowledge-based systems. ISSN 0950-7051, 2014, vol. 64, pp. 22-31.
Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika unrecognised