Virginia TechChen, Y. C.Lee, T. K.2014-05-072014-05-071993-05Chen, Y. C.; Lee, T. K., "New phase in the one-dimensional t-J model," Phys. Rev. B 47, 11548 DOI: http://dx.doi.org/10.1103/PhysRevB.47.115481098-0121http://hdl.handle.net/10919/47867A new phase of a gas of pairs of electrons bounded in a singlet state is found in the one-dimensional t -J model for J > 2t and the density of electrons less than 0.2. This phase was conjectured in the study of the diagonalization of small lattices [Phys. Rev. Lett. 66, 2388 (1991)]. The existence of this new phase for much larger lattice sizes is demonstrated by a combination of two numerical methods, the variational Monte Carlo and the power method. A trial wave function for this phase is proposed and shown to be in good agreement with the ground state obtained by the power method.en-USIn Copyrightantiferromagnetic heisenberg-modelmonte-carloluttinger-liquidhubbard-modelstatespindiagramchainsphysics, condensed matterArticle - Refereedhttp://journals.aps.org/prb/abstract/10.1103/PhysRevB.47.11548https://doi.org/10.1103/PhysRevB.47.11548