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 if space-time symmetric lattice field theory models with a finiteHilbert space per lattice site can reproduce asymptotic freedom in thetwo-dimensional $O(4)$ model. We focus on a simple class of such models with afive dimensional local Hilbert space. We demonstrate how even the simplestmodel reproduces asymptotic freedom within the D-theory formalism but at thecost of increasing the size of the Hilbert space through coupling severallayers of a two-dimensional lattice. We then argue that qubit regularizationcan be viewed as an effective field theory (EFT) even if the continuum limitcannot be reached, as long as we can tune the model close enough to thecontinuum limit where perturbation theory, or other analytical techniques,become viable. We construct a simple lattice model on a single layer with afour dimensional local Hilbert space that acts like an excellent EFT of theoriginal theory.

Space-time symmetric qubit regularization of the asymptotically free two-dimensional O(4) model