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 explore the behaviour of the disconnected entanglement entropy (DEE)across the topological phases of a long range interacting Kitaev chain wherethe long range interactions decay as a power law with an exponent $\alpha$. Weshow that while the DEE may not remain invariant deep within the topologicallynon-trivial phase when $\alpha<1$, it nevertheless shows a quantizeddiscontinuous jump at the quantum critical point and can act as a strong markerfor the detection of topological phase transition. We also study the timeevolution of the DEE after a sudden quench of the chemical potential within thesame phase. In the short range limit of a finite chain, the DEE is expected toremain constant upto a critical time after the quench, which diverges in thethermodynamic limit. However, no such critical time is found to exist when thelong range interactions dominate (i.e., $\alpha<1$).

Detecting topological phase transitions through entanglement between disconnected partitions in a Kitaev chain with long-range interactions