Universe’s Beginning was Fluid, Physicists Say

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According to (This article and its images were originally posted on Breaking Science News October 17, 2018 at 07:27AM.)

Physicists from the ALICE (A Large Ion Collider Experiment) Collaboration at CERN have gained new insights into the properties of the quark-gluon plasma, a state of matter thought to have existed just after the Big Bang. The findings are published in the journal Physics Letters B.

(Cover image)An event from the first xenon-xenon collision at the Large Hadron Collider at 5.44 TeV registered by ALICE; a colored track (blue) corresponds to the trajectory of a charged particle produced in a single collision. Image credit: ALICE Collaboration.

The quark-gluon plasma, as the name suggests, is a special state consisting of the fundamental particles, the quarks, and the particles that bind the quarks together, the gluons.

The ALICE team obtained new results by replacing lead — usually used for collisions — with xenon.

“Xenon is a ‘smaller’ atom with fewer nucleons in its nucleus,” they explained.

“When colliding ions, we create a fireball that recreates the initial conditions of the Universe at temperatures in excess of several thousand billion degrees.”

“In contrast to the Universe, the lifetime of the droplets of the quark-gluon plasma produced in the laboratory is ultra short, a fraction of a second.”

“Under these conditions the density of quarks and gluons is very high and a special state of matter is formed in which quarks and gluons are quasi-free, dubbed the strongly interacting quark-gluon plasma.”

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This article and images were originally posted on [Breaking Science News] October 17, 2018 at 07:27AM. Credit to the original author and Breaking Science News | ESIST.T>G>S Recommended Articles Of The Day.





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