SO (5) Deconfined Phase Transition under the Fuzzy-Sphere Microscope: Approximate Conformal Symmetry, Pseudo-Criticality, and Operator Spectrum
The deconfined quantum critical point (DQCP) is an example of phase transitions beyond
the Landau symmetry-breaking paradigm that attracts wide interest. However, its nature has …
the Landau symmetry-breaking paradigm that attracts wide interest. However, its nature has …
Tuning the Topological -Angle in Cold-Atom Quantum Simulators of Gauge Theories
The topological θ-angle in gauge theories engenders a series of fundamental phenomena,
including violations of charge-parity (CP) symmetry, dynamical topological transitions, and …
including violations of charge-parity (CP) symmetry, dynamical topological transitions, and …
Phases of SO(5) Nonlinear Sigma Model with a Topological Term on a Sphere: Multicritical Point and Disorder Phase
Novel critical phenomena beyond the Landau-Ginzburg-Wilson paradigm have been long
sought after. Among many candidate scenarios, the deconfined quantum critical point …
sought after. Among many candidate scenarios, the deconfined quantum critical point …
Entanglement entropy and deconfined criticality: emergent SO (5) symmetry and proper lattice bipartition
J D'Emidio, AW Sandvik - arXiv preprint arXiv:2401.14396, 2024 - arxiv.org
We study the R\'enyi entanglement entropy (EE) of the two-dimensional $ J $-$ Q $ model,
the emblematic quantum spin model of deconfined criticality at the phase transition between …
the emblematic quantum spin model of deconfined criticality at the phase transition between …
SO (5) multicriticality in two-dimensional quantum magnets
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 …
a valence-bond solid in two-dimensional spin-1/2 magnets. We study a class of $ J $-$ Q …
Boundary conditions dependence of the phase transition in the quantum Newman-Moore model
We study the triangular plaquette model (TPM), also known as the Newman-Moore model, in
the presence of a transverse magnetic field on a lattice with periodic boundaries in both …
the presence of a transverse magnetic field on a lattice with periodic boundaries in both …
Hidden Critical Points in the Two-Dimensional Model: Exact Numerical Study of a Complex Conformal Field Theory
The presence of nearby conformal field theories (CFTs) hidden in the complex plane of the
tuning parameter was recently proposed as an elegant explanation for the ubiquity of …
tuning parameter was recently proposed as an elegant explanation for the ubiquity of …
Edge physics at the deconfined transition between a quantum spin Hall insulator and a superconductor
We study the edge physics of the deconfined quantum phase transition (DQCP) between a
spontaneous quantum spin Hall (QSH) insulator and a spin-singlet superconductor (SC) …
spontaneous quantum spin Hall (QSH) insulator and a spin-singlet superconductor (SC) …
Weak first-order phase transitions in the frustrated square lattice classical Ising model
AA Gangat - Physical Review B, 2024 - APS
The classical J 1− J 2 Ising model on the square lattice is a minimal model of frustrated
magnetism whose phase boundaries have remained under scrutiny for decades. Signs of …
magnetism whose phase boundaries have remained under scrutiny for decades. Signs of …
Equilibration of topological defects at the deconfined quantum critical point
YR Shu, SK Jian, AW Sandvik, S Yin - arXiv preprint arXiv:2305.04771, 2023 - arxiv.org
Deconfined quantum criticality (DQC) arises from fractionalization of quasi-particles and
leads to fascinating behaviors beyond the Landau-Ginzburg-Wilson (LGW) description of …
leads to fascinating behaviors beyond the Landau-Ginzburg-Wilson (LGW) description of …