See also connected correlation function, one particle irreducible correlation function, Green's function (many-body theory).

This thread of development was incorporated into many-body theory and strongly influenced condensed matter physics and nuclear physics.

He specialises in cavity quantum electrodynamics, many-body theory and non-linear dynamics.

See for example, Green-Kubo relations and Green's function (many-body theory).

Van Kampen made fundamental contributions to non-equilibrium processes (in particular on the master equation) and in many-body theory (especially in plasma physics).

We consider a many-body theory with field operator (annihilation operator written in the position basis) .

He research interests cover the multi-reference coupled cluster theories, the general methodology in many-body theories and real- and imaginary-time quantum dynamics.

In 1950 he published an approximation method for many-body theory that has been used in nuclear and solid-state physics.

It is fundamental for the many-body theory that every operator can be expressed in terms of annihilation and creation operators.

Green's function in many-body theory.