99 citations · 467 across the 19 of their papers we have counts for
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Ferromagnetic domains in the large- Hubbard model with a few holes: an FCIQMC study
Sujun Yun, Werner Dobrautz, Hongjun Luo +3
Two-dimensional Hubbard lattices with two or three holes are investigated as a function of in the large- limit. In the so-called Nagaoka limit (one-hole system at infinite $…
Combined unitary and symmetric group approach applied to low-dimensional spin systems
Werner Dobrautz, Vamshi M. Katukuri, Nikolay A. Bogdanov +3
A novel combined unitary and symmetric group approach is used to study the spin- Heisenberg model and related Fermionic systems in a spin-adapted representation, using…
Benchmark study of Nagaoka ferromagnetism by spin-adapted full configuration interaction quantum Monte Carlo
Sujun Yun, Werner Dobrautz, Hongjun Luo +1
We investigate Nagaoka ferromagnetism in the two-dimensional Hubbard model with one hole using the spin-adapted ( conserving) full configuration interaction quantum Monte Ca…
Compact numerical solutions to the two-dimensional repulsive Hubbard model obtained via non-unitary similarity transformations
Werner Dobrautz, Hongjun Luo, Ali Alavi
Similarity transformation of the Hubbard Hamiltonian using a Gutzwiller correlator leads to a non-Hermitian effective Hamiltonian, which can be expressed exactly in momentum-space…
Time propagation and spectroscopy of Fermionic systems using a stochastic technique
Kai Guther, Werner Dobrautz, Olle Gunnarsson +1
We present a stochastic method for solving the time-dependent Schrödinger equation, generalizing a ground-state full configuration interaction Quantum Monte Carlo method. By perfor…