Tensor renormalization group approach to four-dimensional complex ϕ4 theory at finite density

DOI DOI 機関リポジトリ 機関リポジトリ (HANDLE) PDF ほか1件をすべて表示 一部だけ表示 被引用文献17件 参考文献27件 オープンアクセス

書誌事項

タイトル別名
  • Tensor renormalization group approach to four-dimensional complex ?4 theory at finite density
公開日
2020-09
資源種別
journal article
権利情報
  • Open Access, © The Authors. Article funded by SCOAP3.
  • This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
DOI
  • 10.1007/jhep09(2020)177
  • 10.48550/arxiv.2005.04645
公開者
Springer

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説明

<jats:title>A<jats:sc>bstract</jats:sc> </jats:title><jats:p>Tensor network is an attractive approach to the field theory with negative sign problem. The complex <jats:italic>ϕ</jats:italic><jats:sup>4</jats:sup> theory at finite density is a test bed for numerical algorithms to verify their effectiveness. The model shows a characteristic feature called the Silver Blaze phenomenon associated with the sign problem in the large volume limit at low temperature. We analyze the four-dimensional model employing the anisotropic tensor renormalization group algorithm with a parallel computation. We find a clear signal of the Silver Blaze phenomenon on a large volume of <jats:italic>V</jats:italic> = 1024<jats:sup>4</jats:sup>, which implies that the tensor network approach is effective even for four-dimensional field theory beyond two dimensions.</jats:p>

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