English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We explain how to implement, in the context of projected entangled-pairstates (PEPS), the general procedure of fermionization of a tensor networkintroduced in [P. Corboz, G. Vidal, Phys. Rev. B 80, 165129 (2009)]. Theresulting fermionic PEPS, similar to previous proposals, can be used to studythe ground state of interacting fermions on a two-dimensional lattice. As inthe bosonic case, the cost of simulations depends on the amount of entanglementin the ground state and not directly on the strength of interactions. Thepresent formulation of fermionic PEPS leads to a straightforward numericalimplementation that allowed us to recycle much of the code for bosonic PEPS. Wedemonstrate that fermionic PEPS are a useful variational ansatz for interactingfermion systems by computing approximations to the ground state of severalmodels on an infinite lattice. For a model of interacting spinless fermions,ground state energies lower than Hartree-Fock results are obtained, shiftingthe boundary between the metal and charge-density wave phases. For the t-Jmodel, energies comparable with those of a specialized Gutzwiller-projectedansatz are also obtained.

Simulation of strongly correlated fermions in two spatial dimensions with fermionic Projected Entangled-Pair States