Compare Papers

Paper 1

Quantifying Tolerance of a Nonlocal Multi-Qudit State to Any Local Noise.

Loubenets ER.

Year

2018

Journal

Entropy (Basel)

DOI

10.3390/e20040217

arXiv

-

No abstract.

Open paper

Paper 2

A Quantum-Classical Liouville Formalism in a Preconditioned Basis and Its Connection with Phase-Space Surface Hopping

Yanze Wu, Joseph Subotnik

Year

2022

Journal

arXiv preprint

DOI

arXiv:2209.03912

arXiv

2209.03912

We revisit a recent proposal to model nonadiabatic problems with a complex-valued Hamiltonian through a phase-space surface hopping (PSSH) algorithm employing a pseudo-diabatic basis. Here, we show that such a pseudo-diabatic PSSH (PD-PSSH) ansatz is consistent with a quantum-classical Liouville equation (QCLE) that can be derived following a preconditioning process, and we demonstrate that a proper PD-PSSH algorithm is able to capture some geometric magnetic effects (whereas the standard FSSH approach cannot). We also find that a preconditioned QCLE can outperform the standard QCLE in certain cases, highlighting the fact that there is no unique QCLE. Lastly, we also point out that one can construct a mean-field Ehrenfest algorithm using a phase-space representation similar to what is done for PSSH. These findings would appear extremely helpful as far understanding and simulating nonadiabatic dynamics with complex-valued Hamiltonians and/or spin degeneracy.

Open paper