Density matrix renormalization group study of a quantum impurity model with Landau-Zener time-dependent Hamiltonian

Details Density matrix renormalization group study of a quantum impurity model with Landau-Zener time-dependent Hamiltonian Density matrix renormalization group study of a quantum impurity model with Landau-Zener time-dependent Hamiltonian

2008-10-16

arxiv.org/abs/0810.2900v2

Phys. Rev. B 79, 115137 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 7 figures

Scientific paper

10.1103/PhysRevB.79.115137

We use the adaptive time-dependent density matrix renormalization group method (t-DMRG) to study the nonequilibrium dynamics of a benchmark quantum impurity system which has a time-dependent Hamiltonian. This model is a resonant-level model, obtained by a mapping from a certain Ohmic spin-boson model describing the dissipative Landau-Zener transition. We map the resonant-level model onto a Wilson chain, then calculate the time-dependent occupation $n_d(t)$ of the resonant level. We compare t-DMRG results with exact results at zero temperature and find very good agreement. We also give a physical interpretation of the numerical results.

Affiliated with

Also associated with

No associations

Rating

Density matrix renormalization group study of a quantum impurity model with Landau-Zener time-dependent Hamiltonian does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Density matrix renormalization group study of a quantum impurity model with Landau-Zener time-dependent Hamiltonian, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Density matrix renormalization group study of a quantum impurity model with Landau-Zener time-dependent Hamiltonian will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-368057