{"ID":23577923,"CreatedAt":"2026-09-18T05:07:30.921092366Z","UpdatedAt":"2026-09-18T05:07:30.921092366Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2609.20020","arxiv_id":"2609.20020","title":"Corner entanglement scaling with projected entangled pair states","abstract":"Entanglement scaling provides a powerful probe of universal properties at quantum critical points. In two dimensions, contributions originating from a corner-shaped bipartition exhibit a universal scaling, which is determined by the underlying conformal field theory. We develop a method to extract this corner entanglement entropy from projected entangled pair states directly in the thermodynamic limit. When applied to models at a quantum critical point, we show that the corner contribution exhibits scaling with the effective correlation length, in agreement with the hypothesis of finite-entanglement scaling. Our results for the corner coefficients are consistent with other methods, demonstrating the efficiency of our method for diagnosing strongly-correlated quantum critical points in two dimensions.","short_abstract":"Entanglement scaling provides a powerful probe of universal properties at quantum critical points. In two dimensions, contributions originating from a corner-shaped bipartition exhibit a universal scaling, which is determined by the underlying conformal field theory. We develop a method to extract this corner entanglem...","url_abs":"https://arxiv.org/abs/2609.20020","url_pdf":"https://arxiv.org/pdf/2609.20020v1","authors":"[\"Chloé Van Bastelaere\",\"Rui-Zhen Huang\",\"Laurens Vanderstraeten\"]","published":"2026-09-17T10:26:51Z","proceeding":"cond-mat.str-el","tasks":"[\"cond-mat.str-el\",\"quant-ph\"]","methods":"[]","has_code":false}