Friday, September 16, 2016

Extreme temperatures, relativity and kinetic theory


According to kinetic theory, average kinetic energy is proportional to temperature. Supposing kBT/2 per particle, can we use relativity and kinetic theory to calculate, e.g., the temperature and velocity of quarks in a quark-gluon plasma and hotter/denser states of matter?


Note: I did some calculations already myself to check this idea


Normal kinetic theory (in 3D)-> Ec(av)=12mv2=3kBT/2 must be substituted (???) by


Ec(rel)=Mc2mc2


with M=mγ


For a quark-gluon plasma, taking the proton mass as m and the critical temperature as 200MeV I get


200MeV=3/2kBT


so T is about 21012K or about 4x10¹²K if I drop the factor 3 above. That is OK with the known temperature of the quark-gluon plasma. I am also concerned about the issue of determining the gamma factor for protons(quarks?) at those energies/temperatures...



I get, for protons at this


β=v/c=1(mc2/E)2=0.977


Am I right?




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