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cond-mat.str-el2018★ 70 cited
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…
cond-mat.quant-gas2018★ 28 cited
Accelerating the convergence of exact diagonalization with the transcorrelated method: Quantum gas in one dimension with contact interactions
Péter Jeszenszki, Hongjun Luo, Ali Alavi +1
Exact diagonalization expansions of Bose or Fermi gases with contact interactions converge very slowly due to a non-analytic cusp in the wave function. Here we develop a transcorre…