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SUMMARY:Instanton/Sphaleron processes in hadronic\, heavy ion collisions a
 nd cosmology - Edward Shuryak (Stony Brook University)
DTSTART:20210507T150000Z
DTEND:20210507T160000Z
UID:TALK159787@talks.cam.ac.uk
CONTACT:Rene Poncelet
DESCRIPTION:*The seminar will take place via Zoom "here":https://maths-cam
 -ac-uk.zoom.us/j/95215212460?pwd=TWN5cjJ3azErSUYremw5UWRKL0NKUT09.*\n\nAbs
 tract: I start describing the (pure gauge) topological landscape  as a fun
 ction of\nChern-Simons number and size. It was originally derived by reduc
 tion from 4d\nInstanton-Antiinstanton valley\, as well as direct energy mi
 nimization with constraints.\nThe instanton-sphaleron processes  combines 
 an "inclined tunneling"  and\nMinkowskian solution\, describing a sphalero
 n explosion. It has been proposed to\nobserve the QCD sphaleron production
  in pp collisions at LHC and RHIC\, via  double diffractive events .\nAt s
 mall masses $M\\sim 3\\\, GeV$ the key observable is proposed to be $\\bar
  u u \\bar d d \\bar s s$\nflavor content\, at $M> 20\\\, Gev$ multi-jet c
 lusters. We then briefly discuss sounds in\nheavy ion collisions and the B
 ig Bang\, and ongoing search for sphaleron production via\nchiral imbalanc
 e and chiral magnetic effect. At the end we consider  electroweak and QCD 
 cosmological\nphase transitions\, focusing on possible role of sphalerons 
 in production of sounds\, gravity waves and\nmagnetic fields.\n\nThe slide
 s are available "here":https://www.hep.phy.cam.ac.uk/~conference/Shuryak_2
 021-05-07.pdf
LOCATION:Virtual Seminar 
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