Physical review. B, Condensed matter · 1987 · 23 citations · 4 references
Natural SciencesPhysicsMathematical PhysicsQuantum MechanicsTheoretical PhysicsElectron-phonon InteractionsPerturbation TheoryGround State PropertiesPerturbation ExpansionPhononsPolaron Theory
The Feynman theory for the ground-state energy of the two-dimensional polaron is compared to a variational ansatz which takes into account angular correlations between pairs of virtual phonons and to the exact perturbation expansion through sixth order.
4
Slow Electrons in a Polar Crystal
Richard P. Feynman · Physical Review · 1955 · 1.4K citations
The Motion of Slow Electrons in a Polar Crystal
T. D. Lee, F. E. Low, David Pines · Physical Review · 1953 · 1.3K citations