3 ms·
> Imho whatever is carrying gravity between masses cannot itself have a mass. Forget gravitons, this already exists in pure general relativity. Spacetime is cu
by Manishearth 11y ago
> Imho whatever is carrying gravity between masses cannot itself have a mass.
Forget gravitons, this already exists in pure general relativity. Spacetime is curved around a massive object, and that curvature contains energy. That's just another word for mass, so the curvature itself exerts gravity. This creates more curvature (...etc etc). This is one of the reasons as to why Einstein's equations are nonlinear.
Note that the concept of having mass is separate from the gravity force. Interaction with the Higgs field gives rise to mass, whereas gravitons are the force carrying particle for gravity.
- cyphar 11y agoOnly electrons get mass from the Higgs mechanism. Most of your mass comes from your protons and neutrons (or rather the energy "stored" in the bonds between the quarks that make them up).
- Manishearth 11y agoYou're talking about binding energy, and that's not where the majority of mass comes from. All massive particles get their mass from the Higgs field.
- rotorblade 11y agoAll _fundamental_ particles gets their mass from the Higgs (up to some issues with the neutrinos). Composite particles, say the Proton, is a strongly coupled system (that is, can not be described by perturbation theory) and it does not have the mass being the sum of its constituents (not even most of it). Hence, it is not known what gives most of the mass of particles such as the Proton.
- Manishearth 11y agoEr, sorry, implicitly was talking about fundamental particles. IIRC we do know where protons get their mass. The internal color field has some energy, thus some mass, which comes from that field interacting with Higgs.
- cyphar 11y agoE=mc^2 doesn't come from the Higgs mechanism.
- cyphar 11y agoThis is true for fundamental particles. However, more than 99% of the protons mass doesn't come from its constituent parts. I couldn't find any papers on this question in the 10 minutes I spent googling (and I don't have my QCD textbook handy), but here's a few links: * http://physics.stackexchange.com/questions/64232/your-mass-is-not-from-higgs-boson http://physics.stackexchange.com/questions/64232/your-mass-i... * https://en.wikipedia.org/wiki/Proton#Quarks_and_the_mass_of_the_proton https://en.wikipedia.org/wiki/Proton#Quarks_and_the_mass_of_...