physics, mathematical physics, philosophy of physics
theory (physics), model (physics)
experiment, measurement, computable physics
Axiomatizations
Tools
Structural phenomena
Types of quantum field thories
standard model of particle physics
force field (physics) gauge bosons
photon - electromagnetic field (abelian Yang-Mills field)
scalar bosons
matter field fermions (spinors)
hadron (bound states of the above quarks)
minimally extended supersymmetric standard model
superpartner gauge field fermions
Exotica
The graviton is the (hypothetical) quantum of the field of gravity, i.e., the quanta of the theory of quantum gravity.
In first-order formulation of gravity a field configuration is locally a Lie algebra-valued form
with values in the Poincare Lie algebra.
This is a vielbein $E$ and a spin connection $\Omega$. This together is the graviton field.
A graviton has spin $2$, and is massless. We can see that it has spin $2$ from the fact that the source of gravity is $T$, the energy-momentum tensor, which is a second-rank tensor. It can be shown that a massless spin-$2$ particle has to be a graviton. The basic concept behind this is that massless particles have to couple to conserved currents - the stress-energy tensor $T$, the source of gravity.
In supergravity this is accompanied by the gravitino.