Abstract
We study time-dependent coupled-cluster theory in the framework of nuclear physics. Based on Kvaal's bi-variational formulation of this method [S. Kvaal, J. Chem. Phys. 136, 194109 (2012)], we explicitly demonstrate that observables that commute with the Hamiltonian are conserved under time evolution. We explore the role of the energy and of the similarity-transformed Hamiltonian under real and imaginary time evolution and relate the latter to similarity renormalization group transformations. Proof-of-principle computations of He and O in small model spaces, and computations of the Lipkin model illustrate the capabilities of the method.
2 More- Received 17 May 2012
DOI:https://doi.org/10.1103/PhysRevC.86.014308
©2012 American Physical Society