September 15, 2014 to October 10, 2014
Nordita, Stockholm
Europe/Stockholm timezone

Integrable Richardson-Gaudin bases for pairing Hamiltonians

Sep 19, 2014, 10:40 AM
40m
FP41 (Nordita, Stockholm)

FP41

Nordita, Stockholm

Speaker

Stijn De Baerdemacker

Description

Configuration interaction methods for quantum many-body systems are generally represented within Fock space, the space spanned by all possible single-particle Slater determinant (SD) wave functions. For strongly-correlated quantum systems, the number of physically important SD basis states quickly reaches beyond the capacities of present (and future) computer hardware, due to the lack of correlations within these SD basis states. Bases spanned by Richardson-Gaudin (RG) eigenstates can be regarded as a generalisation of Fock space, because the strong correlations are inherently present within the basis states. In this contribution, it will be shown how configuration interaction methods can benefit from the use of RG bases over conventional Fock space.

Presentation materials