wolram said:
Is it energy? how is the unit of quantum space time (given) a value, so it can multiply several times over, is there a limit when the (energy) will be exhausted ?
one always needs to point out (even though you and I know this well) that these very fundamental questions are not yet answerable because there is not yet a complete theory of quantum spacetime and matter
but my feeling is that there will be a theory that will be properly completed and checked out so that one can accord it some credibility
and it will probably have a built in UPPER LIMIT on the amount of energy which a single particle can have
and this limit will be roughly on the order of 2 billion joules WHICH IS ENOUGH TO FILL THE PETROL TANK OF YOUR CAR and drive 100 miles or so with. actual mileage may vary, since this is just an order of magnitude estimate------our gracious dame Nereid calls it an OOM estimate.
a single particle carrying that much whallop is quite inconceivable to me, but if there were one then it would have a quantum WAVELENGTH (giving a fuzzy idea of localizing it in space) equal to the PLANCK LENGTH
this is the fractious recalcitrance of nature which fiercely resists being pinned down----you only can clamp a particle wavelength down by increasing its energy-----or else give up and change to a different particle with higher energy and shorter wavelength.
Maybe this upper limit on the energy of particles is not what you asked.
Maybe you are thinking of some upper limit on the combined energy of BUNCHES of particles. Except for accidentally getting so much together in a small space that they collapse to make a hole, I don't know of any upper limit.
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always fun thinking about questions you ask wolram, even if often can't give a satisfactory answer