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Title Hybrid model with viscous relativistic hydrodynamics: a role of constraints on the shear-stress tensor Author info A. S. Khvorostukhin ... [et al.] Author Khvorostukhin A. S. (34%)
Co-authors Kolomeitsev Evgeni E. 1970- (33%) UMBFP06 - Katedra fyziky
Toneev V. D. (33%)
Source document The European Physical Journal A : Hadrons and Nuclei. Vol. 57, no. 10 (2021), pp. 294-1-294-25. - New York : Springer Nature, 2021 Keywords relativistic hydrodynamics heavy ion collisions viscosity Form. Descr. články - journal articles Language English Country Germany Annotation We present the hybrid model connecting the parton–hadron–string dynamic model (PHSD) and a hydrodynamic model taking into account shear viscosity within the Israel–Stewart approach. The numerical scheme, initialization, and particlization procedure are discussed in detail. The performance of the code is tested on the pion and proton rapidity and transverse mass distributions calculated for Au + Au and Pb+Pb collisions at AGS–SPS energies. The influence of the switch time from transport to hydro models, the viscous parameter, and freeze-out time are discussed. Since the applicability of the Israel–Stewart hydrodynamics assumes the perturbative character of the viscous stress tensor, πμν, which should not exceed the ideal energy–momentum tensor, T μν id , hydrodynamical codes usually rescale the shear stress tensor if the inequality πμν T μν id is not fulfilled in some sense. There are several conditions used in the literature and we analyze in detail the influence of different conditions and values of the cut-off parameter on observables.We show that the form of the corresponding condition plays an important role in the sensitivity of hydrodynamic calculations to the viscous parameter – a ratio of the shear viscosity to the entropy density, η/s. It is shown that the constraints used in the vHLLE and MUSIC models give the same results for the observables.With these constraints, the rapidity distributions and transverse momentum spectra are most sensitive to a change of the η/s ratio. We demonstrate that these constraints do not guarantee that each element of the πμν tensor is smaller than the corresponding element T μν id . As an alternative, a strict condition is used. When applied it reduces the sensitivity of the proton and pion momentum distributions to the viscosity parameter. We performed global fits of the rapidity and transverse mass distributions of pion and protons. It was also found that η/s as a function of the collision energy monotonically increases from Elab = 6 AGeV up to Elab = 40 AGeV and saturates for higher SPS energies. We observe that it is difficult to reproduce simultaneously pion and proton rapidity distribution within our model with the present choice of the equation of state without a phase transition. URL Link na plný text Public work category ADC No. of Archival Copy 50708 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
article
Title The European Physical Journal A Subtitle Hadrons and Nuclei Issue data New York : Springer Nature , 2021 ISSN 1434-60011434-601X Form. Descr. časopisy - journals Year, No. Vol. 57 no. 10 (2021) Language English Country Germany 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 2021: Hybrid model with viscous relativistic hydrodynamics: a role of constraints on the shear-stress tensor 
journal
Title Charge and isospin fluctuations in a non-ideal pion gas with dynamically fixed particle number Author info Evgeni E. Kolomeitsev ... [et al.] Author Kolomeitsev Evgeni E. 1970- (34%) UMBFP06 - Katedra fyziky
Co-authors Voskresensky Dmitri (33%)
Borisov Maxim E. (33%)
Source document The European Physical Journal A : Hadrons and Nuclei. Vol. 57, no. 4 (2021), pp. [1-29]. - Berlin : Springer, 2021 Keywords Bose-Einsteinova kondenzácia - Bose-Einstein condensation heavy ion collisions Form. Descr. články - journal articles Language English Country Germany Public work category ADC No. of Archival Copy 49947 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika article
Title The European Physical Journal A Subtitle Hadrons and Nuclei Issue data Berlin : Springer , 2021 ISSN 1434-60011434-601X Form. Descr. časopisy - journals Year, No. Vol. 57 no. 4 (2021) Language English Country Germany 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 2021: Charge and isospin fluctuations in a non-ideal pion gas with dynamically fixed particle number journal
Title Higher-order anisotropies in the blast-wave model: Disentangling flow and density field anisotropies Author info Jakub Cimerman ... [et al.] Author Cimerman Jakub 1994- (45%)
Co-authors Tomášik Boris 1972- (45%) UMBFP06 - Katedra fyziky
Csanád Máté (5%)
Lökös Sándor (5%)
Source document The European Physical Journal A : Hadrons and Nuclei. Vol. 53, no. 8 (2017), pp. [1-13]. - Berlin : Springer, 2017 Keywords ultrarelativistic heavy ion collisions femtoscopy anisotropic flow Language English Country United States of America systematics 53 Annotation We formulate a generalisation of the blast-wave model which is suitable for the description of higher-order azimuthal anisotropies of the hadron production. The model includes anisotropy in the density profile as well as an anisotropy in the transverse expansion velocity field. We then study how these two kinds of anisotropies influence the single-particle distributions and the correlation radii of two-particle correlation functions. Particularly we focus on the third-order anisotropy and consideration is given averaging over different orientations of the event plane. Public work category ADC No. of Archival Copy 41756 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
unrecognised
Title The European Physical Journal A Subtitle Hadrons and Nuclei Issue data Berlin : Springer , 2017 ISSN 1434-60011434-601X Form. Descr. časopisy - journals Year, No. Vol. 53 no. 8 (2017) Language English Country Germany 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: Higher-order anisotropies in the blast-wave model: Disentangling flow and density field anisotropies journal
Title Observables of non-equilibrium phase transition Author info Boris Tomášik ... [et al.] Author Tomášik Boris 1972- (45%) UMBFP06 - Katedra fyziky
Co-authors Schulc Martin (5%)
Melo Ivan (45%)
Kopečná Renata (5%)
Source document The European Physical Journal A : Hadrons and Nuclei. Vol. 52, no. 8 (2016), pp. 236-241. - Berlin : Springer, 2016 Keywords phase diagram strongly interacting matter heavy ion collisions Language English Country United States of America systematics 53 Public work category ADC No. of Archival Copy 37236 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika unrecognised
Title The European Physical Journal A Subtitle Hadrons and Nuclei Issue data Berlin : Springer , 2016 ISSN 1434-60011434-601X Form. Descr. časopisy - journals Year, No. Vol. 52 no. 10 (2016) Language English Country Germany 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: Higher-order anisotropies in the Buda-Lund model: disentangling flow and density field anisotropies journal
Title Complete strangeness measurements in heavy-ion collisions Author info Boris Tomášik, Evgeni E. Kolomeitsev Author Tomášik Boris 1972- (50%) UMBFP06 - Katedra fyziky
Co-authors Kolomeitsev Evgeni E. 1970- (50%) UMBFP06 - Katedra fyziky
Source document The European Physical Journal A : Hadrons and Nuclei. Vol. 52, no. 8 (2016), pp. 251-256. - Berlin : Springer, 2016 Keywords heavy ion collisions strangeness Language English Country United States of America systematics 53 Public work category ADC No. of Archival Copy 37239 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika unrecognised
Title The European Physical Journal A Subtitle Hadrons and Nuclei Issue data Berlin : Springer , 2016 ISSN 1434-60011434-601X Form. Descr. časopisy - journals Year, No. Vol. 52 no. 12 (2016) Language English Country Germany 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: Scalar quanta in Fermi liquids: zero sounds, instabilities, Bose condensation, and a metastable state in dilute nuclear matter journal