Again - my naive assumption was that different hadrons like the proton were simulated using lattice QCD and the simulation revealed the mass of the hadron. I think from what has been said that this assumption is wrong? If so what would make it possible to actually simulate a proton directly...
Thanks humanino. The plot is a great help. Do I take it from what your saying ("you can count it as one single simulation") that a proton is never directly simulated? So my idea of individual hadrons being simulated is wrong and that there is some additional non-simulation transformation that...
So if the masses and coupling constant you mentioned were known then the Lattice QCD method would determine the mass of the proton without any other masses? Suppose its two masses, ma and mb and one coupling constant, c. Then by running the GCD lattice mass determination for a range of these...
Is more than one measured particle mass used because the exact mass of the quarks and gluons used is known even less well? Do these simulations reveal more about the mass of these particles?
Thanks - that clears things up a bit. It could have been (for example) that Plank's mass was used to fix the scale. So saying that the mass of the proton has been calculated from first principles is a bit misleading? You could have said that the mass of a kaon was calculated and that the proton...
I've read that the mass of a proton has been calculated using QCD. But I assume some measured values are inputs to this calculation? If so can anyone provide a list of all of the values used (speed of light, Plank's constant, mass of other particles?)