TY - UNPB
T1 - Evidence of Fermion-to-Boson Crossover in the Fermionic Two-Leg Flux Ladder
AU - Calvanese Strinati, Marcello
AU - Berkovits, Richard
AU - Shimshoni, Efrat
PY - 2019/8
Y1 - 2019/8
N2 - We study the crossover between fermions and bosons in a system of two coupled one-dimensional chains subjected to a gauge flux (two-leg flux ladder), with both attractive and repulsive interaction. In the presence of strong attractive nearest-neighbour interaction and repulsive next-to-nearest-neighbour interaction, the system crosses into a regime in which fermions form tightly-bound pairs, which behave as bosonic entities. By means of numerical simulations based on the density-matrix-renormalization-group (DMRG) method, we analyze such crossover in specific limits. We show in particular that in the strongly-paired regime, the gauge flux induces a quantum phase transition of the Ising type from vortex density wave (VDW) to a charge density wave (CDW), characteristic of bosonic systems.
AB - We study the crossover between fermions and bosons in a system of two coupled one-dimensional chains subjected to a gauge flux (two-leg flux ladder), with both attractive and repulsive interaction. In the presence of strong attractive nearest-neighbour interaction and repulsive next-to-nearest-neighbour interaction, the system crosses into a regime in which fermions form tightly-bound pairs, which behave as bosonic entities. By means of numerical simulations based on the density-matrix-renormalization-group (DMRG) method, we analyze such crossover in specific limits. We show in particular that in the strongly-paired regime, the gauge flux induces a quantum phase transition of the Ising type from vortex density wave (VDW) to a charge density wave (CDW), characteristic of bosonic systems.
UR - https://scholar.google.co.il/citations?view_op=view_citation&hl=en&user=NEAYpFoAAAAJ&sortby=pubdate&citation_for_view=NEAYpFoAAAAJ:edDO8Oi4QzsC
UR - https://arxiv.org/abs/1908.02495
M3 - نسخة اولية
T3 - arXiv preprint arXiv:1908.02495
BT - Evidence of Fermion-to-Boson Crossover in the Fermionic Two-Leg Flux Ladder
ER -