output
20082022
most citedHigh-Order Coupled Cluster Method Study of Frustrated and Unfrustrated Quantum Magnets in External Magnetic Fields

77 citations

5 papers

stat.ML2022★ 6 cited

Distributed learning optimisation of Cox models can leak patient data: Risks and solutions

Carsten Brink, Christian Rønn Hansen, Matthew Field +5

Medical data are often highly sensitive, and frequently there are missing data. Due to the data's sensitive nature, there is an interest in creating modelling methods where the dat…

physics.acc-ph2013★ 38 cited

Technologies for Delivery of Proton and Ion Beams for Radiotherapy

Hywel Owen, David Holder, Jose Alonso +1

Recent developments for the delivery of proton and ion beam therapy have been significant, and a number of technological solutions now exist for the creation and utilisation of the…

cond-mat.str-el2009★ 77 cited

High-Order Coupled Cluster Method Study of Frustrated and Unfrustrated Quantum Magnets in External Magnetic Fields

D. J. J. Farnell, R. Zinke, J. Richter +1

We apply the coupled cluster method (CCM) in order to study the ground-state properties of the (unfrustrated) square-lattice and (frustrated) triangular-lattice spin-half Heisenber…

cond-mat.str-el2009★ 26 cited

High-Order Coupled Cluster Method (CCM) Calculations for Quantum Magnets with Valence-Bond Ground States

D. J. J. Farnell, J. Richter, R. Zinke +1

In this article, we prove that exact representations of dimer and plaquette valence-bond ket ground states for quantum Heisenberg antiferromagnets may be formed via the usual coupl…

cond-mat.str-el2008★ 75 cited

Magnetic order in a spin-half interpolating square-triangle Heisenberg antiferromagnet

R. F. Bishop, P. H. Y. Li, D. J. J. Farnell +1

Using the coupled cluster method we study the zero-temperature phase diagram of a spin-half Heisenberg antiferromagnet (HAF), the so-called -- model, defined on an a…