56 citations · 154 across the 10 of their papers we have counts for
8 papers · 1 filter
Learning by Confusion: The Phase Diagram of the Holstein Model
George Issa, Owen Bradley, Ehsan Khatami +1
We employ the "learning by confusion" technique, an unsupervised machine learning approach for detecting phase transitions, to analyze quantum Monte Carlo simulations of the two-di…
High-temperature magnetization and entropy of the triangular lattice Hubbard model in a Zeeman field
Owen Bradley, Yutan Zhang, Jaan Oitmaa +1
We use strong coupling expansions to calculate the entropy function , the magnetization , and the double occupancy factor for the half-filled triangular la…
Charge order in the kagome lattice Holstein model: A hybrid Monte Carlo study
Owen Bradley, Benjamin Cohen-Stead, Steven Johnston +2
The Holstein model is a paradigmatic description of the electron-phonon interaction, in which electrons couple to local dispersionless phonon modes, independent of momentum. The mo…
Fast and scalable quantum Monte Carlo simulations of electron-phonon models
Benjamin Cohen-Stead, Owen Bradley, Cole Miles +3
We introduce methodologies for highly scalable quantum Monte Carlo simulations of electron-phonon models, and report benchmark results for the Holstein model on the square lattice.…
Instabilities of spin-1 Kitaev spin liquid phase in presence of single-ion anisotropies
Owen Bradley, Rajiv R. P. Singh
We study the spin-one Kitaev model on the honeycomb lattice in the presence of single-ion anisotropies. We consider two types of single ion anisotropies: A anisotropy whi…
Superconductivity and charge density wave order in the 2D Holstein model
Owen Bradley, George G. Batrouni, Richard T. Scalettar
The Holstein Hamiltonian describes fermions hopping on a lattice and interacting locally with dispersionless phonon degrees of freedom. In the low density limit, dressed quasiparti…
Thermodynamic behavior of modified integer-spin Kitaev models on the honeycomb lattice
Owen Bradley, Jaan Oitmaa, Diptiman Sen +1
We study the thermodynamic properties of modified spin- Kitaev models introduced by Baskaran, Sen and Shankar (Phys. Rev. B 78, 115116 (2008)). These models have the property th…
Robustness of entropy plateaus: A case study of triangular Ising antiferromagnets
Owen Bradley, Chunhan Feng, Richard T. Scalettar +1
Residual entropy is a key feature associated with emergence in many-body systems. From a variety of frustrated magnets to the onset of spin-charge separation in Hubbard models and…