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Idea

In particle physics, matter is a bound state of fermionic particles.

This is in contrast to force fields, whose quanta are bosonic particles.

In the standard model of particle physics, all matter fields are sections of a spinor bundle on spacetime which is associated of a $U(1) \times SU(2) \times SU(3)$-principal bundle.

In the standard model of cosmology matter is characterized as part of the energy-momentum density with specific parameter of state $w = p/\rho$, see at FRW model.

Revised on January 10, 2013 20:10:20 by Urs Schreiber (89.204.153.52)