Search Results - "Anders, W."

Critical Level Crossings and Gapless Spin Liquid in the Square-Lattice Spin-1/2 J1−J2 Heisenberg Antiferromagnet by Wang, Ling, Sandvik, Anders W

“…We use the density matrix renormalization group method to calculate several energy eigenvalues of the frustrated S=1/2 square-lattice J1−J2 Heisenberg model on…”
Get full text

Quantum criticality with two length scales by Shao, Hui, Guo, Wenan, Sandvik, Anders W.

“…The theory of deconfined quantum critical (DQC) points describes phase transitions at absolute temperature T = 0 outside the standard paradigm, predicting…”
Get full text

Continuous quantum phase transition between an antiferromagnet and a valence-bond solid in two dimensions: evidence for logarithmic corrections to scaling by Sandvik, Anders W

“…The antiferromagnetic to valence-bond-solid phase transition in the two-dimensional J-Q model (an S=1/2 Heisenberg model with four-spin interactions) is…”
Get full text

Evidence for deconfined quantum criticality in a two-dimensional Heisenberg model with four-spin interactions by Sandvik, Anders W

“…Using ground-state projector quantum Monte Carlo simulations in the valence-bond basis, it is demonstrated that nonfrustrating four-spin interactions can…”
Get full text

Multicritical Deconfined Quantum Criticality and Lifshitz Point of a Helical Valence-Bond Phase by Zhao, Bowen, Takahashi, Jun, Sandvik, Anders W

“…The S=1/2 square-lattice J-Q model hosts a deconfined quantum phase transition between antiferromagnetic and dimerized (valence-bond solid) ground states. We…”
Get full text

Monte Carlo Renormalization Flows in the Space of Relevant and Irrelevant Operators: Application to Three-Dimensional Clock Models by Shao, Hui, Guo, Wenan, Sandvik, Anders W

“…We study renormalization group flows in a space of observables computed by Monte Carlo simulations. As an example, we consider three-dimensional clock models,…”
Get full text

Existence of a Spectral Gap in the Affleck-Kennedy-Lieb-Tasaki Model on the Hexagonal Lattice by Lemm, Marius, Sandvik, Anders W, Wang, Ling

“…The S=1 Affleck-Kennedy-Lieb-Tasaki (AKLT) quantum spin chain was the first rigorous example of an isotropic spin system in the Haldane phase. The conjecture…”
Get full text

Symmetry-enhanced discontinuous phase transition in a two-dimensional quantum magnet by Zhao, Bowen, Weinberg, Phillip, Sandvik, Anders W.

“…In a quantum phase transition, the ground state and low-temperature properties of a system change drastically as some parameter controlling zero-point quantum…”
Get full text

Entanglement Entropy and Deconfined Criticality: Emergent SO(5) Symmetry and Proper Lattice Bipartition by D’Emidio, Jonathan, Sandvik, Anders W.

“…We study the Rényi entanglement entropy (EE) of the two-dimensional J-Q model, the emblematic quantum spin model of deconfined criticality at the phase…”
Get full text

Association between conflicts of interest and favourable recommendations in clinical guidelines, advisory committee reports, opinion pieces, and narrative reviews: systematic review by Nejstgaard, Camilla H, Bero, Lisa, Hróbjartsson, Asbjørn, Jørgensen, Anders W, Jørgensen, Karsten J, Le, Mary, Lundh, Andreas

“…To investigate the association between conflicts of interest and favourable recommendations in clinical guidelines, advisory committee reports, opinion pieces,…”
Get more information

Nearly Deconfined Spinon Excitations in the Square-Lattice Spin- 1 / 2 Heisenberg Antiferromagnet by Shao, Hui, Qin, Yan Qi, Capponi, Sylvain, Chesi, Stefano, Meng, Zi Yang, Sandvik, Anders W.

“…We study the spin-excitation spectrum (dynamic structure factor) of the spin-1/2 square-lattice Heisenberg antiferromagnet and an extended model (the J−Q…”
Get full text

Ground states of a frustrated quantum spin chain with long-range interactions by Sandvik, Anders W

“…The ground state of a spin-1/2 Heisenberg chain with both frustration and long-range interactions is studied using Lanczos exact diagonalization. The evolution…”
Get full text

Ashkin-teller criticality and pseudo-first-order behavior in a frustrated Ising model on the square lattice by Jin, Songbo, Sen, Arnab, Sandvik, Anders W

“…We study the challenging thermal phase transition to stripe order in the frustrated square-lattice Ising model with couplings J(1) < 0 (nearest-neighbor,…”
Get full text

Confinement in the Bulk, Deconfinement on the Wall: Infrared Equivalence between Compactified QCD and Quantum Magnets by Sulejmanpasic, Tin, Shao, Hui, Sandvik, Anders W, Ünsal, Mithat

“…In a spontaneously dimerized quantum antiferromagnet, spin-1/2 excitations (spinons) are confined in pairs by strings akin to those confining quarks in…”
Get full text

Transformation of the Fallopian Tube Secretory Epithelium Leads to High-Grade Serous Ovarian Cancer in Brca;Tp53;Pten Models by Perets, Ruth, Wyant, Gregory A., Muto, Katherine W., Bijron, Jonathan G., Poole, Barish B., Chin, Kenneth T., Chen, Jin Yun H., Ohman, Anders W., Stepule, Corey D., Kwak, Soongu, Karst, Alison M., Hirsch, Michelle S., Setlur, Sunita R., Crum, Christopher P., Dinulescu, Daniela M., Drapkin, Ronny

“…High-grade serous ovarian carcinoma presents significant clinical and therapeutic challenges. Although the traditional model of carcinogenesis has focused on…”
Get full text

Random-Singlet Phase in Disordered Two-Dimensional Quantum Magnets by Liu, Lu, Shao, Hui, Lin, Yu-Cheng, Guo, Wenan, Sandvik, Anders W.

“…We study the effects of disorder (quenched randomness) in a two-dimensional square-latticeS=1/2quantum-spin system, theJ−Qmodel with a multispin…”
Get full text

Amplitude Mode in Three-Dimensional Dimerized Antiferromagnets by Qin, Yan Qi, Normand, B, Sandvik, Anders W, Meng, Zi Yang

“…The amplitude ("Higgs") mode is a ubiquitous collective excitation related to spontaneous breaking of a continuous symmetry. We combine quantum Monte Carlo…”
Get full text

Quantum critical dynamics in a 5,000-qubit programmable spin glass by King, Andrew D., Raymond, Jack, Lanting, Trevor, Harris, Richard, Zucca, Alex, Altomare, Fabio, Berkley, Andrew J., Boothby, Kelly, Ejtemaee, Sara, Enderud, Colin, Hoskinson, Emile, Huang, Shuiyuan, Ladizinsky, Eric, MacDonald, Allison J. R., Marsden, Gaelen, Molavi, Reza, Oh, Travis, Poulin-Lamarre, Gabriel, Reis, Mauricio, Rich, Chris, Sato, Yuki, Tsai, Nicholas, Volkmann, Mark, Whittaker, Jed D., Yao, Jason, Sandvik, Anders W., Amin, Mohammad H.

“…Experiments on disordered alloys 1 – 3 suggest that spin glasses can be brought into low-energy states faster by annealing quantum fluctuations than by…”
Get full text

Phase transitions in the frustrated Ising model on the square lattice by Jin, Songbo, Sen, Arnab, Guo, Wenan, Sandvik, Anders W.

“…We consider the thermal phase transition from a paramagnetic to a stripe-anti-ferromagnetic phase in the frustrated two-dimensional square-lattice Ising model…”
Get full text

Conflicts of interest in clinical guidelines, advisory committee reports, opinion pieces, and narrative reviews: associations with recommendations by Nejstgaard, Camilla Hansen, Bero, Lisa, Hróbjartsson, Asbjørn, Jørgensen, Anders W, Jørgensen, Karsten Juhl, Le, Mary, Lundh, Andreas

“…Treatment and diagnostic recommendations are often made in clinical guidelines, reports from advisory committee meetings, opinion pieces such as editorials,…”
Get more information