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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The two-dimensional easy-plane SU$(3)$ magnet subjected to the transversefield was investigated with the exact-diagonalization method. So far, as to the$XY$ model (namely, the easy-plane SU$(2)$ magnet), the transverse-field-drivenorder-disorder phase boundary has been investigated with theexact-diagonalization method, and it was claimed that the end-point singularity(multicriticality) at the $XX$-symmetric point does not accord withlarge-$N$-theory's prediction. Aiming to reconcile the discrepancy, we extendthe internal symmetry to the easy-plane SU$(3)$ with the anisotropy parameter$\eta$, which interpolates the isotropic ($\eta=0$) and fully anisotropic($\eta=1$) cases smoothly. As a preliminary survey, setting $\eta=1$, weanalyze the order-disorder phase transition through resorting to the fidelitysusceptibility $\chi_F$, which exhibits a pronounced signature for thecriticality. Thereby, with $\eta$ scaled carefully, the $\chi_F$ data are castinto the crossover-scaling formula so as to determine the crossover exponent$\phi$, which seems to reflect the extension of the internal symmetry group toSU(3).

Two-dimensional easy-plane SU$(3)$ magnet with the transverse field: Anisotropy-driven multicriticality