Anderson orthogonality theorem

The Anderson orthogonality theorem is a theorem in

.

It relates to the introduction of a

the potential ${\displaystyle V(r)}$ that the impurity creates. The N-electron ground state for the system when ${\displaystyle V(r)=0}$, which corresponds to the absence of the impurity and ${\displaystyle V(r)\neq 0}$, which corresponds to the introduction of the impurity are in the thermodynamic limit ${\displaystyle N\to \infty }$.

References

• P. W. Anderson (1967). "Infrared Catastrophe in Fermi Gases with Local Scattering Potentials". Physical Review Letters. 18 (24): 1049.
  doi:10.1103/PhysRevLett.18.1049
  .
• P. W. Anderson (1967). "Ground State of a Magnetic Impurity in a Metal". Physical Review. 164 (2): 352.
  doi:10.1103/PhysRev.164.352
  .