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We investigate the deconfined quantum critical point (DQCP) candidate in the extended hard-core Bose-Hubbard model on the kagome lattice, employing quantum Monte Carlo simulations to study the entanglement entropy and the $U(1)$ disorder…

Strongly Correlated Electrons · Physics 2026-01-21 Yan-Cheng Wang , Yan Zheng , Xue-Feng Zhang

We construct an exactly solvable lattice model for a deconfined quantum critical point (DQCP) in (1+1) dimensions. This DQCP occurs in an unusual setting, namely at the edge of a (2+1) dimensional bosonic symmetry protected topological…

Strongly Correlated Electrons · Physics 2023-02-07 Carolyn Zhang , Michael Levin

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-energy physics communities, as it is expected to offer a new…

Strongly Correlated Electrons · Physics 2025-02-18 Menghan Song , Jiarui Zhao , Meng Cheng , Cenke Xu , Michael M. Scherer , Lukas Janssen , Zi Yang Meng

Deconfined quantum criticality describes continuous phase transitions that are not captured by the Landau-Ginzburg paradigm. Here, we investigate deconfined quantum critical points in the long-range, anisotropic Heisenberg chain. With…

Strongly Correlated Electrons · Physics 2026-05-26 Anton Romen , Stefan Birnkammer , Michael Knap

Bulk topology and criticality can both lead to nontrivial boundary effects. Topological orders are often characterized by their robust edge states, while bulk critical points can have different boundary scalings governed by boundary…

Strongly Correlated Electrons · Physics 2024-05-30 Nayan Myerson-Jain , Xiao-Chuan Wu , Cenke Xu

The point at absolute zero where matter becomes unstable to new forms of order is called a quantum critical point (QCP). The quantum fluctuations between order and disorder that develop at this point induce profound transformations in the…

Strongly Correlated Electrons · Physics 2009-11-10 J. Custers , P. Gegenwart , H. Wilhelm , K. Neumaier , Y. Tokiwa , O. Trovarelli , C. Geibel , F. Steglich , C. Pepin , P. Coleman

New phases of matter emerge at the edge of magnetic instabilities. In local moment systems, such as heavy fermions, the magnetism can be destabilized by pressure, chemical doping, and, rarely, by magnetic field, towards a zero-temperature…

We study the critical behavior driven by potential quantum critical points (QCPs) termed as $\tau_{0,x,y,z}$-Type QCPs in the $d$-wave cuprate superconductors. Within the framework of the renormalization group approach, we construct the…

Superconductivity · Physics 2026-05-29 Qi-Qi Yue , Yi-Sheng Fu , Jing Wang

Quenched QCD at zero baryonic chemical potential undergoes a first-order deconfinement phase transition at a critical temperature $T_c$, which is related to the spontaneous breaking of the global center symmetry. Including heavy, dynamical…

High Energy Physics - Lattice · Physics 2021-12-17 Reinhold Kaiser , Owe Philipsen , Alessandro Sciarra

Using ac susceptibility, we have determined the pressure dependence of the metamagnetic critical end point temperature T* for field applied in the ab-plane in the itinerant metamagnet Sr3Ru2O7. We find that T* falls monotonically to zero as…

Strongly Correlated Electrons · Physics 2015-05-20 W. Wu , A. McCollam , S. A. Grigera , R. S. Perry , A. P. Mackenzie , S. R. Julian

Quenched QCD at zero baryonic chemical potential undergoes a first-order deconfinement phase transition at a critical temperature $T_c$, which is related to the spontaneous breaking of the global center symmetry. The center symmetry is…

High Energy Physics - Lattice · Physics 2023-08-08 Reinhold Kaiser , Owe Philipsen

The deconfined quantum critical point, a prototype Landau-forbidden transition, could exist in principle in the phase transitions involving symmetry protected topological phase, however, examples of such kinds of transition in physical…

Strongly Correlated Electrons · Physics 2020-01-27 Tian-Sheng Zeng , D. N. Sheng , W. Zhu

According to Landau criterion, a phase transition should be first order when cubic terms of order parameters are allowed in its effective Ginzburg-Landau free energy. Recently, it was shown by renormalization group (RG) analysis that…

Strongly Correlated Electrons · Physics 2020-02-12 Bo-Hai Li , Zi-Xiang Li , Hong Yao

Novel critical phenomena beyond the Landau-Ginzburg-Wilson paradigm have been long sought after. Among many candidate scenarios, the deconfined quantum critical point (DQCP) constitutes the most fascinating one, and its lattice model…

Strongly Correlated Electrons · Physics 2024-05-16 Bin-Bin Chen , Xu Zhang , Zi Yang Meng

We consider an inhomogeneous anisotropic gap superconductor in the vicinity of the quantum critical point, where the transition temperature is suppressed to zero by disorder. Starting with the BCS Hamiltonian, we derive the Ginzburg-Landau…

Superconductivity · Physics 2009-11-13 Victor Galitski

We follow the evolution of the elementary excitations of the quantum antiferromagnet TlCuCl3 through the pressure-induced quantum critical point, which separates a dimer-based quantum disordered phase from a phase of long-ranged magnetic…

Strongly Correlated Electrons · Physics 2008-05-28 Ch. Rüegg , B. Normand , M. Matsumoto , A. Furrer , D. McMorrow , K. Krämer , H. -U. Güdel , S. Gvasaliya , H. Mutka , M. Boehm

Deconfined quantum criticality (DQC) arises from fractionalization of quasi-particles and leads to fascinating behaviors beyond the Landau-Ginzburg-Wilson description of phase transitions. Here, we study the critical dynamics when driving a…

Strongly Correlated Electrons · Physics 2025-04-15 Yu-Rong Shu , Shao-Kai Jian , Anders W. Sandvik , Shuai Yin

QCD at zero baryon density in the limit of infinite quark mass undergoes a first order deconfinement phase transition at a critical temperature $T_c$ corresponding to the breaking of the global centre symmetry. In the presence of dynamical…

High Energy Physics - Lattice · Physics 2016-09-20 Christopher Czaban , Owe Philipsen

The quantum criticality of an Ising-like screw chain antiferromagnet SrCo$_2$V$_2$O$_8$, with a transverse magnetic field applied along the crystalline $a$-axis, is investigated by ultra-low temperature NMR measurements. The N\'{e}el…

Strongly Correlated Electrons · Physics 2019-08-14 Y. Cui , H. Zou , N. Xi , Zhangzhen He , Y. X. Yang , L. Shu , G. H. Zhang , Z. Hu , T. Chen , Rong Yu , Jianda Wu , Weiqiang Yu

In this work, we numerically study the effect of weak measurement on deconfined quantum critical point(DQCP). Particularly, we consider the ground state of an one-dimensional spin $1/2$ system with long range exchange interactions($K$),…

Quantum Physics · Physics 2026-03-06 K. G. S. H. Gunawardana