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

The pseudofermion functional renormalization group (pf-FRG) is one of the fewnumerical approaches that has been demonstrated to quantitatively determine theordering tendencies of frustrated quantum magnets in two and three spatialdimensions. The approach, however, relies on a number of presumptions andapproximations, in particular the choice of pseudofermion decomposition and thetruncation of an infinite number of flow equations to a finite set. Here wegeneralize the pf-FRG approach to SU(N)-spin systems with arbitrary N anddemonstrate that the scheme becomes exact in the large-N limit. Numericallysolving the generalized real-space renormalization group equations forarbitrary N, we can make a stringent connection between the physically mostsignificant case of SU(2)-spins and more accessible SU(N) models. In a casestudy of the square-lattice SU(N) Heisenberg antiferromagnet, we explicitlydemonstrate that the generalized pf-FRG approach is capable of identifying theinstability indicating the transition into a staggered flux spin liquid groundstate in these models for large, but finite values of N. In a companion paper(arXiv:1711.02183) we formulate a momentum-space pf-FRG approach for SU(N) spinmodels that allows us to explicitly study the large-N limit and access thelow-temperature spin liquid phase.

Functional renormalization group approach to SU(N) Heisenberg models: Real-space RG at arbitrary N