Wavefunction matching for solving quantum many-body problems

Understand

Ab initio calculations play an essential role in our fundamental understanding of quantum many-body systems across many subfields, from strongly correlated fermions to quantum chemistry and from atomic and molecular systems to nuclear physics.

• One of the primary challenges is to perform accurate calculations for systems where the interactions may be complicated and difficult for the chosen computational method to handle.
• Here we address the problem by introducing a new approach called wavefunction matching.
• Wavefunction matching transforms the interaction between particles so that the wavefunctions up to some finite range match that of an easily computable interaction.