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 study the two-dimensional complex $\phi^{4}$ theory at finite chemicalpotential using the tensor renormalization group. This model exhibits theSilver Blaze phenomenon in which bulk observables are independent of thechemical potential below the critical point. Since it is expected to be adirect outcome of an imaginary part of the action, an approach free from thesign problem is needed. We study this model systematically changing thechemical potential in order to check the applicability of the tensorrenormalization group to the model in which scalar fields are discretized bythe Gaussian quadrature. The Silver Blaze phenomenon is successfully confirmedon the extremely large volume $V=1024^2$ and the results are also ensured byanother tensor network representation with a character expansion.

Investigation of complex $\phi^{4}$ theory at finite density in two dimensions using TRG