9 papers
Entanglement asymmetry in the gapped XYZ spin- chain
Felipe Taha Sant'Ana
The entanglement asymmetry measures how strongly a symmetry is broken inside a subsystem. Analytic results at equilibrium have so far covered free theories and, perturbatively, the…
Canonical-ensemble scaling of Tan's contact in the trapped Tonks--Girardeau gas
Felipe Taha Sant'Ana
We derive the canonical-ensemble scaling of Tan's contact for harmonically trapped Tonks--Girardeau bosons at finite temperature in the large- limit. The leading scaling coe…
Weak-Coupling Limit of the Lattice Nonlinear Schrödinger Integral Equation
Felipe Taha Sant'Ana
We study the ground-state integral equation of the quantum lattice nonlinear Schrödinger model, equivalently the isotropic Heisenberg XXX chain at spin , whose solution is…
Two-spinon effects on the thermal Tonks-Girardeau gas
Felipe Taha Sant'Ana, Hui Liu
We study the effects of the two-spinon excitations on the field-field correlator of the Tonks-Girardeau gas. While these excitations have been previously examined in the ground sta…
The relevant excitations for the one-body function in the Lieb-Liniger model
Miłosz Panfil, Felipe Taha Sant'Ana
We study the ground state one-body correlation function in the Lieb-Liniger model. In the spectral representation, correlations are built from contributions stemming from different…
A study on quantum gases: bosons in optical lattices and the one-dimensional interacting Bose gas
Felipe Taha Sant'Ana
Bosonic atoms confined in optical lattices are described by the Bose-Hubbard model and can exist in two different phases, Mott insulator or superfluid, depending on the strength of…