Proximate deconfined quantum critical point in SrCu2(BO3)2

Y Cui, L Liu, H Lin, KH Wu, W Hong, X Liu, C Li, Z Hu… - Science, 2023 - science.org
The deconfined quantum critical point (DQCP) represents a paradigm shift in quantum
matter studies, presenting a “beyond Landau” scenario for order-order transitions. Its …

High-accuracy variational Monte Carlo for frustrated magnets with deep neural networks

C Roth, A Szabó, AH MacDonald - Physical Review B, 2023 - APS
We show that neural quantum states based on very deep (4–16-layered) neural networks
can outperform state-of-the-art variational approaches on highly frustrated quantum …

Speeding up learning quantum states through group equivariant convolutional quantum ansätze

H Zheng, Z Li, J Liu, S Strelchuk, R Kondor - PRX quantum, 2023 - APS
We develop a theoretical framework for S n-equivariant convolutional quantum circuits with
SU (d) symmetry, building on and significantly generalizing Jordan's permutational quantum …

Is there evidence for exponential quantum advantage in quantum chemistry?

S Lee, J Lee, H Zhai, Y Tong, AM Dalzell… - ar** restricted Boltzmann machines with quantum-state representation by restoring symmetry
Y Nomura - Journal of Physics: Condensed Matter, 2021 - iopscience.iop.org
The variational wave functions based on neural networks have recently started to be
recognized as a powerful ansatz to represent quantum many-body states accurately. In …

Absence of spin liquid phase in the Heisenberg model on the square lattice

X Qian, M Qin - Physical Review B, 2024 - APS
We perform an in-depth investigation of the phase diagram of the J 1− J 2 Heisenberg model
on the square lattice. We take advantage of density matrix renormalization group and fully …

From Complexification to Self-Similarity: New Aspects of Quantum Criticality

Y Liu, E Zhao, H Zou - Chinese Physics Letters, 2024 - iopscience.iop.org
Quantum phase transitions are a fascinating area of condensed matter physics. The
extension through complexification not only broadens the scope of this field but also offers a …

Superconducting valence bond fluid in lightly doped eight-leg cylinders

HC Jiang, SA Kivelson, DH Lee - Physical Review B, 2023 - APS
Superconductivity in doped quantum paramagnets has been a subject of long theoretical
inquiry. In this work, we report a density matrix renormalization group study of lightly doped …