منابع مشابه
From Little Bangs to the Big Bang
The ‘Little Bangs’ made in particle collider experiments reproduce the conditions in the Big Bang when the age of the Universe was a fraction of a second. It is thought that matter was generated, the structures in the Universe were formed and cold dark matter froze out during this very early epoch when the equation of state of the Universe was dominated by the quark-gluon plasma (QGP). Future L...
متن کاملPrimordial hadrosynthesis in the Little Bang
The present status of soft hadron production in high energy heavy-ion collisions is summarized. In spite of strong evidence for extensive dynamical evolution and collective expansion of the fireball before freeze-out I argue that its chemical composition is hardly changed by hadronic final state interactions. The measured hadron yields thus reflect the primordial conditions at hadronization. Th...
متن کاملThe Little Bang ! Results from RHIC Barbara
I report rst results on Au + Au collisions at p s = 130 GeV/ per nucleon pair from all four experiments at the Relativistic Heavy Ion Collider. The energy density achieved is well above the threshold predicted by Lattice QCD for quark decon nement. Large pressure is developed early in the collision, leading to collective asymmetric ow of the particle transverse to the beam energy and explosive ...
متن کاملChallenges to the standard model of Big Bang nucleosynthesis.
Big Bang nucleosynthesis provides a unique probe of the early evolution of the Universe and a crucial test of the consistency of the standard hot Big Bang cosmological model. Although the primordial abundances of 2H, 3He, 4He, and 7Li inferred from current observational data are in agreement with those predicted by Big Bang nucleosynthesis, recent analysis has severely restricted the consistent...
متن کاملBig Bang Nucleosynthesis and Physics Beyond the Standard Model
The Hubble expansion of galaxies, the 2.73 K blackbody radiation background and the cosmic abundances of the light elements argue for a hot, dense origin of the universe — the standard Big Bang cosmology — and enable its evolution to be traced back fairly reliably to the nucleosynthesis era when the temperature was of O(1) MeV corresponding to an expansion age of O(1) sec. All particles, known ...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2013
ISSN: 1742-6596
DOI: 10.1088/1742-6596/455/1/012044