1999/07/31 by Steven R. White, D. J. Scalapino · 1 citation
Physics and Astronomy · #Algorithm #Computer science #Phase (matter) #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Theoretical and Computational Physics #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.61.6320
This version includes a revised, more careful comparison of numerical results between DMRG and Green's function Monte Carlo. In particular, for the original posted version we were accidentally sent obsolete data by Hellberg and Manousakis; their new results, which are what were used in their Physical Review Letter, are more accurate because a better trial wavefunction was used
arxiv created 1999/08/31 · openalex publication_date 2000/03/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We make a critical analysis of numerical results for and against phase separation and stripe formation in the t\ensuremath-J model. We argue that the frustrated phase separation mechanism for stripe formation requires phase separation at too high a doping for it to be consistent with existing numerical studies of the t\ensuremath-J model. We compare variational energies for various methods, and conclude that the most accurate calculations for large systems appear to be from the density-matrix renormalization group. These calculations imply that the ground state of the doped t\ensuremath-J model is striped, not phase separated.