Scaling Properties of Spectra in New Exact Solutions of Rotating, Multi-Component Fireball Hydrodynamics
We describe fireballs that rehadronize from a perfect fluid of quark matter, characterized by the lattice QCD equation of state, to a chemically frozen, multi-component mixture, that contains various kinds of observable hadrons. For simplicity and clarity, we apply a non-relativistic approximation t...
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| Format: | Article |
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MDPI AG
2018-03-01
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| Series: | Universe |
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| Online Access: | http://www.mdpi.com/2218-1997/4/4/58 |
| _version_ | 1811183922301632512 |
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| author | Tamás Csörgő Gábor Kasza |
| author_facet | Tamás Csörgő Gábor Kasza |
| author_sort | Tamás Csörgő |
| collection | DOAJ |
| description | We describe fireballs that rehadronize from a perfect fluid of quark matter, characterized by the lattice QCD equation of state, to a chemically frozen, multi-component mixture, that contains various kinds of observable hadrons. For simplicity and clarity, we apply a non-relativistic approximation to describe the kinematics of this expansion. Unexpectedly, we identify a secondary explosion that may characterize fireball hydrodynamics at the QCD critical point. After rehadronization, the multi-component mixture of hadrons keeps on rotating and expanding together, similarly to a single component fluid. After kinetic freeze-out, the effective temperature T i of the single-particle spectra of hadron type h i is found to be a sum of the kinetic freeze-out temperature T f (that is independent of the hadron type h i ) and a term proportional to the mass m i of hadron type h i . The coefficient of proportionality to m i is found to be independent of the hadron type h i but to be dependent on the radial flow and vorticity of collective dynamics. |
| first_indexed | 2024-04-11T13:05:57Z |
| format | Article |
| id | doaj.art-5812a437dbd64826ad0ca1ff9a891042 |
| institution | Directory Open Access Journal |
| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-04-11T13:05:57Z |
| publishDate | 2018-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Universe |
| spelling | doaj.art-5812a437dbd64826ad0ca1ff9a8910422022-12-22T04:22:46ZengMDPI AGUniverse2218-19972018-03-01445810.3390/universe4040058universe4040058Scaling Properties of Spectra in New Exact Solutions of Rotating, Multi-Component Fireball HydrodynamicsTamás Csörgő0Gábor Kasza1Wigner RCP, H-1525 Budapest 114, P.O.Box 49, HungaryEKU KRC, H-3200 Gyöngyös, Mátrai út 36, HungaryWe describe fireballs that rehadronize from a perfect fluid of quark matter, characterized by the lattice QCD equation of state, to a chemically frozen, multi-component mixture, that contains various kinds of observable hadrons. For simplicity and clarity, we apply a non-relativistic approximation to describe the kinematics of this expansion. Unexpectedly, we identify a secondary explosion that may characterize fireball hydrodynamics at the QCD critical point. After rehadronization, the multi-component mixture of hadrons keeps on rotating and expanding together, similarly to a single component fluid. After kinetic freeze-out, the effective temperature T i of the single-particle spectra of hadron type h i is found to be a sum of the kinetic freeze-out temperature T f (that is independent of the hadron type h i ) and a term proportional to the mass m i of hadron type h i . The coefficient of proportionality to m i is found to be independent of the hadron type h i but to be dependent on the radial flow and vorticity of collective dynamics.http://www.mdpi.com/2218-1997/4/4/58hydrodynamicsexact solutionquark-gluon plasmahadronizationvorticityradial flow |
| spellingShingle | Tamás Csörgő Gábor Kasza Scaling Properties of Spectra in New Exact Solutions of Rotating, Multi-Component Fireball Hydrodynamics Universe hydrodynamics exact solution quark-gluon plasma hadronization vorticity radial flow |
| title | Scaling Properties of Spectra in New Exact Solutions of Rotating, Multi-Component Fireball Hydrodynamics |
| title_full | Scaling Properties of Spectra in New Exact Solutions of Rotating, Multi-Component Fireball Hydrodynamics |
| title_fullStr | Scaling Properties of Spectra in New Exact Solutions of Rotating, Multi-Component Fireball Hydrodynamics |
| title_full_unstemmed | Scaling Properties of Spectra in New Exact Solutions of Rotating, Multi-Component Fireball Hydrodynamics |
| title_short | Scaling Properties of Spectra in New Exact Solutions of Rotating, Multi-Component Fireball Hydrodynamics |
| title_sort | scaling properties of spectra in new exact solutions of rotating multi component fireball hydrodynamics |
| topic | hydrodynamics exact solution quark-gluon plasma hadronization vorticity radial flow |
| url | http://www.mdpi.com/2218-1997/4/4/58 |
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