Chebyshev matrix product state impurity solver for dynamical mean-field theory - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Accéder directement au contenu
Article Dans Une Revue Biophysical Reviews and Letters Année : 2014

Chebyshev matrix product state impurity solver for dynamical mean-field theory

Résumé

We compute the spectral functions for the two-site dynamical cluster theory and for the two-orbital dynamical mean-field theory in the density-matrix renormalization group (DMRG) framework using Chebyshev expansions represented with matrix product states (MPS). We obtain quantitatively precise results at modest computational effort through technical improvements regarding the trun-cation scheme and the Chebyshev rescaling procedure. We furthermore establish the relation of the Chebyshev iteration to real-time evolution, and discuss technical aspects as computation time and implementation in detail.
Fichier principal
Vignette du fichier
1407.1622v1.pdf (957.19 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

cea-01232791 , version 1 (24-11-2015)

Identifiants

Citer

F. Alexander Wolf, Ian P. Mcculloch, Olivier Parcollet, Ulrich Schollwöck. Chebyshev matrix product state impurity solver for dynamical mean-field theory. Biophysical Reviews and Letters, 2014, 90, pp.115124. ⟨10.1103/PhysRevB.90.115124⟩. ⟨cea-01232791⟩
25 Consultations
238 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More