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

Critical transition points between symmetry-broken phases are characterizedas fixed points in the renormalization group (RG) theory. We show that,following the standard Wilsonian procedure that traces out the large momentummodes, this well known fact can break down in non-Hermitian systems. Based onnon-Hermitian Su-Schrieffer-Hegger (SSH)-type models, we propose a real-spacedecimation scheme to study the criticality between the topological and trivialphase. We provide concrete examples and an analytic proof to show that thereal-space scheme perfectly overcomes the insufficiency of the standard method,especially in the sense that it always preserves the system at criticality asfixed points under RG. The proposed method can also greatly simplify the searchof critical points for complicated non-Hermitian models by ruling out theirrelevant operators. These results pave the way towards more advanced RG-basedtechniques for the interacting non-Hermitian quantum systems.

A renormalization group approach to non-Hermitian topological quantum criticality