  At one loop, quantum kinks are described by a sum of quantum harmonic
oscillator Hamiltonians, and the ground state is just the product of the
oscillator ground states. Two-loop kink masses are only known in integrable and
supersymmetric cases and two-loop states have never been found. We find the
two-loop kink mass and explicitly construct the two-loop kink ground state in a
scalar field theory with an arbitrary nonderivative potential. We use a
coherent state operator which maps the vacuum sector to the kink sector,
allowing all states to be treated with a single Hamiltonian which needs to be
renormalized only once, eliminating the need for regulator matching conditions.
Our calculation is greatly simplified by a recently introduced alternative to
collective coordinates, in which the kink momentum is fixed perturbatively.
