Working in hydrodynamics with Yogiro Hama

Grassi, F.

doi:10.1590/s0103-97332007000100004

Cited by 9 publications

(19 citation statements)

References 29 publications

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“…This kind of freeze-out is similar to the model of "continuous emission" proposed in Ref. [55] and further developed in Refs. [56,57].…”

Section: Inverse Slopes Of Mt Spectra and Mean Transverse Massessupporting

confidence: 78%

“…Thus, its mean free path (λ mfp ) should be larger than its path to the free surface (with due account of the future evolution of the fluid). Precisely this criterion is applied in the model of "continuous emission" [55]. In the simplified 3FD version of the "continuous emission", λ mfp = 0 (in practice, the cell width) in the fluid phase and λ mfp → ∞ in the gas phase.…”

Section: Inverse Slopes Of Mt Spectra and Mean Transverse Massesmentioning

confidence: 99%

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Alternative scenarios of relativistic heavy-ion collisions. III. Transverse momentum spectra

Ivanov

2014

Phys. Rev. C

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Transverse-mass spectra, their inverse slopes and mean transverse masses in relativistic collisions of heavy nuclei are analyzed in a wide range of incident energies 2.7 GeV ≤ √ sNN ≤ 39 GeV.The analysis is performed within the three-fluid model employing three different equations of state (EoS's): a purely hadronic EoS, an EoS with the first-order phase transition and that with a smooth crossover transition into deconfined state. Calculations show that inverse slopes and mean transverse masses of all the species (with the exception of antibaryons within the hadronic scenario) exhibit the step-like behavior similar to that observed for mesons and protons in available experimental data. This step-like behavior takes place for all considered EoS's and results from the freezeout dynamics rather than is a signal of the deconfinement transition. A good reproduction of experimental inverse slopes and mean transverse masses for light species (up to proton) is achieved within all the considered scenarios. The freeze-out parameters are precisely the same as those used for reproduction of particles yields in previous papers of this series. This became possible because the freeze-out stage is not completely equilibrium.

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“…This kind of freeze-out is similar to the model of "continuous emission" proposed in Ref. [55] and further developed in Refs. [56,57].…”

Section: Inverse Slopes Of Mt Spectra and Mean Transverse Massessupporting

confidence: 78%

Section: Inverse Slopes Of Mt Spectra and Mean Transverse Massesmentioning

confidence: 99%

Alternative scenarios of relativistic heavy-ion collisions. III. Transverse momentum spectra

Ivanov

2014

Phys. Rev. C

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“…This kind of freeze-out is similar to the model of "continuous emission" proposed in Ref. [32]. There the particle emission occurs from a surface layer of the meanfree-path width.…”

Section: Fd Modelsupporting

confidence: 76%

Alternative scenarios of relativistic heavy-ion collisions. II. Particle production

Ivanov

2013

Phys. Rev. C

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Particle production in relativistic collisions of heavy nuclei is analyzed in a wide range of incident energies 2.7 GeV ≤ √ sNN ≤ 62.4 GeV. The analysis is performed within the three-fluid model employing three different equations of state (EoS): a purely hadronic EoS, an EoS with the firstorder phase transition and that with a smooth crossover transition. It is found that the hadronic scenario fails to reproduce experimental yields of antibaryons (strange and nonstrange), starting already from lower SPS energies, i.e. √ sNN > 5 GeV. Moreover, at energies above the top SPS one, i.e. √ sNN > 17.4 GeV, the mid-rapidity densities predicted by the hadronic scenario considerably exceed the available RHIC data on all species. At the same time the deconfinement-transition scenarios reasonably agree (to a various extent) with all the data. The present analysis demonstrates certain advantage of the deconfinement-transition EoS's. However, all scenarios fail to reproduce the strangeness enhancement in the incident energy range near 30A GeV (i.e. a horn anomaly in the K + /π + ratio) and yields of φ-mesons at 20A-40A GeV.

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“…In addition, the negative contribution problem is also a question of theoretical consistency and needs a solution. Several approaches have been proposed and discussed in [183][184][185][186][187][188]188]. The method proposed in Ref.…”

Section: Resultsmentioning

confidence: 99%

Hydrodynamic approaches in relativistic heavy ion reactions

Souza

Koide²,

Kodama³

2016

Progress in Particle and Nuclear Physics

181

208

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We review several facets of the hydrodynamic description of the relativistic heavy ion collisions, starting from the historical motivation to the present understandings of the observed collective aspects of experimental data, especially those of the most recent RHIC and LHC results. In this report, we particularly focus on the conceptual questions and the physical foundations of the validity of the hydrodynamic approach itself. We also discuss recent efforts to clarify some of the points in this direction, such as the various forms of derivations of relativistic hydrodynamics together with the limitations intrinsic to the traditional approaches, variational approaches, known analytic solutions for special cases, and several new theoretical developments. Throughout this review, we stress the role of course-graining procedure in the hydrodynamic description and discuss its relation to the physical observables through the analysis of a hydrodynamic mapping of a microscopic transport model. Several questions to be answered to clarify the physics of collective phenomena in the relativistic heavy ion collisions are pointed out.

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Working in hydrodynamics with Yogiro Hama

Abstract: I present a brief overview on the motivation for performing relativistic nuclear collisions and the justification for using hydrodynamics to describe them. The contribution of Prof. Hama to the field of hydrodynamics and his efforts to form a group working on this subject are outlined.

Cited by 9 publications

References 29 publications

Alternative scenarios of relativistic heavy-ion collisions. III. Transverse momentum spectra

Alternative scenarios of relativistic heavy-ion collisions. III. Transverse momentum spectra

Alternative scenarios of relativistic heavy-ion collisions. II. Particle production

Hydrodynamic approaches in relativistic heavy ion reactions

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