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- Anders W. Sandvik
- Physical review letters
- 2007

Using ground-state projector quantum Monte Carlo simulations in the valence-bond basis, it is demonstrated that nonfrustrating four-spin interactions can destroy the NÃ©el order of the two-dimensionalâ€¦ (More)

- Anders W. Sandvik
- Physical review letters
- 2010

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 studied using large-scale quantum Monte Carloâ€¦ (More)

- Anders W. Sandvik
- Physical review letters
- 2005

A Monte Carlo method for quantum spin systems is formulated in the valence-bond basis. The nonorthogonality allows for an efficient importance-sampled projection of the ground state out of anâ€¦ (More)

- Anders W. Sandvik
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2003

A quantum Monte Carlo algorithm for the transverse Ising model with arbitrary short- or long-range interactions is presented. The algorithm is based on sampling the diagonal matrix elements of theâ€¦ (More)

- Dag Henrik Reikvam, Alexander V. Erofeev, +7 authors Finn-Eirik Johansen
- PloS one
- 2011

BACKGROUND
Inappropriate cross talk between mammals and their gut microbiota may trigger intestinal inflammation and drive extra-intestinal immune-mediated diseases. Epithelial cells constitute theâ€¦ (More)

- Jie Lou, Anders W. Sandvik, Leon Balents
- Physical review letters
- 2007

We study the three-dimensional XY model with a Zq anisotropic term. At temperatures T<Tc this dangerously irrelevant perturbation is relevant only above a length scale Lambda, which diverges as aâ€¦ (More)

- Anders W. Sandvik, G. Vidal
- Physical review letters
- 2007

We show that the formalism of tensor-network states, such as the matrix-product states (MPS), can be used as a basis for variational quantum Monte Carlo simulations. Using a stochastic optimizationâ€¦ (More)

These lecture notes introduce quantum spin systems and several computational methods for studying their ground-state and finite-temperature properties. Symmetry-breaking and critical phenomena areâ€¦ (More)

- Ying Tang, Anders W. Sandvik
- Physical review letters
- 2011

We develop a technique to directly study spinons (emergent spin S=1/2 particles) in quantum spin models in any number of dimensions. The size of a spinon wave packet and of a bound pair (a triplon)â€¦ (More)

- Hui Shao, Wenan Guo, Anders W. Sandvik
- Science
- 2016

The theory of deconfined quantum critical (DQC) points describes phase transitions at absolute temperature T = 0 outside the standard paradigm, predicting continuous transformations between certainâ€¦ (More)