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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We consider the ground-state properties of the s=1/2 Ising chain in atransverse field which varies regularly along the chain having a period ofalternation 2. Such a model, similarly to its uniform counterpart, exhibitsquantum phase transitions. However, the number and the position of the quantumphase transition points depend on the strength of transverse field modulation.The behaviour in the vicinity of the critical field in most cases remains thesame as for the uniform chain (i.e. belongs to the square-lattice Ising modeluniversality class). However, a new critical behaviour may also arise. Wereport the results for critical exponents obtained partially analytically andpartially numerically for very long chains consisting of a few thousand sites.Comment: Presented at 12-th Czech and Slovak Conference on Magnetism,  Ko\v{s}ice, 12-15 July 200

Quantum Phase Transitions in s = 1/2 Ising Chain in a Regularly Alternating Transverse Field