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

Using determinant quantum Monte Carlo (d-QMC) simulations, we demonstratethat an extended Hubbard model on a bilayer honeycomb lattice has two novelquantum phase transitions. The first is a quantum phase transition between theweakly interacting gapless Dirac fermion phase and a strongly interacting fullygapped and symmetric trivial phase, which cannot be described by the standardGross-Neveu model. The second is a quantum critical point between a quantumspin Hall insulator with spin $S^z$ conservation and the previously mentionedstrongly interacting fully gapped phase. At the latter quantum critical pointthe single particle excitations remain gapped, while spin and charge gap bothclose. We argue that the first quantum phase transition is related to the$\mathbb{Z}_{16}$ classification of the topological superconductor$^3\text{He-B}$ phase with interactions, while the second quantum phasetransition is a topological phase transition described by a bosonic O(4)nonlinear sigma model field theory with a $\Theta$-term.

Exotic Quantum Phase Transitions of $(2+1)d$ Dirac fermions