Diagnosing quantum phase transition order and deconfined criticality via entanglement entropy

Z Deng, L Liu, W Guo, HQ Lin - Physical Review Letters, 2024 - APS
We study the scaling behavior of the Rényi entanglement entropy with smooth boundaries at
the putative deconfined critical point separating the Néel antiferromagnetic and valence …

Extracting subleading corrections in entanglement entropy at quantum phase transitions

M Song, J Zhao, ZY Meng, C Xu, M Cheng - SciPost Physics, 2024 - scipost.org
We systematically investigate the finite size scaling behavior of the Rényi entanglement
entropy (EE) of several representative 2d quantum many-body systems between a …

Deconfined quantum criticality lost

M Song, J Zhao, M Cheng, C Xu, MM Scherer… - arxiv preprint arxiv …, 2023 - arxiv.org
Over the past two decades, the enigma of the deconfined quantum critical point (DQCP) has
attracted broad attention across the condensed matter, quantum field theory, and high …

Entanglement entropy and deconfined criticality: emergent SO (5) symmetry and proper lattice bipartition

J D'Emidio, AW Sandvik - Physical Review Letters, 2024 - APS
We study the Rényi entanglement entropy (EE) of the two-dimensional JQ model, the
emblematic quantum spin model of deconfined criticality at the phase transition between …

Entanglement entropy from non-equilibrium Monte Carlo simulations

A Bulgarelli, M Panero - Journal of High Energy Physics, 2023 - Springer
A bstract We study the entanglement entropy in lattice field theory using a simulation
algorithm based on Jarzynski's theorem. We focus on the entropic c-function for the Ising …

Duality transformations and the entanglement entropy of gauge theories

A Bulgarelli, M Panero - Journal of High Energy Physics, 2024 - Springer
A bstract The study of entanglement in gauge theories is expected to provide insights into
many fundamental phenomena, including confinement. However, calculations of quantities …

SO (5) multicriticality in two-dimensional quantum magnets

J Takahashi, H Shao, B Zhao, W Guo… - arxiv preprint arxiv …, 2024 - arxiv.org
We resolve the nature of the quantum phase transition between a N\'eel antiferromagnet and
a valence-bond solid in two-dimensional spin-1/2 magnets. We study a class of $ J $-$ Q …

Universal features of entanglement entropy in the honeycomb Hubbard model

J D'Emidio, R Orús, N Laflorencie, F De Juan - Physical Review Letters, 2024 - APS
The entanglement entropy is a unique probe to reveal universal features of strongly
interacting many-body systems. In two or more dimensions these features are subtle, and …

Emergent self-duality in a long-range critical spin chain: From deconfined criticality to first-order transition

S Yang, Z Pan, DC Lu, XJ Yu - Physical Review B, 2023 - APS
Over the past few decades, tremendous efforts have been devoted to understanding self-
duality at the quantum critical point, which enlarges the global symmetry and constrains the …