The question I saw earlier today on this board about the temperature inside a black hole, with the link to the theory of negative kelvin, sparked a question in my mind…
What is the highest theoretically possible temperature?
If Kelvins is a measurement of kinetic energy, wouldn’t the highest kelvin state be one in which all particles (would they have to be photons?) in said state were moving at light speed? Is this possible? What would the degrees kelvin of this state be?
Or is the highest theoretically possible measurement on the kelvin scale, a state in which all particles were tachyons and moving at faster than light speed?
What’s the scoop?