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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:51 |
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Conference: Bucharest University Faculty of Physics 2012 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
On a possible parallelism between the evolution of the fireball and the evolution of the Universe after Big Bang
Authors:
Al. JIPA
Affiliation:
Research Center Nuclear Matter in Extreme Conditions,
Atomic and Nuclear Physics Chair, Department of Structure of Matter, Earth and Atmosphere Physics, Astrophysics,
Faculty of Physics, University of Bucharest, ROMANIA
E-mail
jipa@brahms.fizica.unibuc.ro
Keywords:
relativistic and ultrarelativistic nucleus-nucleus collisions, Big Bang, quark-gluon plasma, fireball, cosmological scenarios
for
Relativistic Nuclear Physics Research Team
Abstract:
In many cosmological scenarios, the evolution of the Universe after Big Bang is associated with the apparition of the basic particles defining different fundamental interactions. For the strong interaction, at the subnuclear level, the basic constituents, quarks and gluons, seem to appear around a few μs after Big Bang. In nucleus-nucleus collisions at ultrarelativistic energies, the formation of the quark-gluon plasma is expected. Therefore, the formation of the quark-gluon plasma and the evolution of the fireball created in the overlapping region of the two colliding nuclei can be discussed in the terms of the cosmological scenarios on the formation and evolution of the Universe. Taking into account these fundamental aspects, the present work presents a few new experimental results, as well as a few simulation results, that sustain a possible parallelism between the evolution of the fireball and the evolution of the Universe after Big Bang. The results have been obtained in the frame of a few international collaborations where the members of the team from the “Nuclear Matter in Extreme Conditions” Research Center are involved, mainly: BRAHMS at RHIC-BNL (USA), SKM 200, MARUSYA at JINR Dubna (Russia), CBM-FAIR at GSI Darmstadt (Germany).
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