Fabio Lingua — Politecnico di Torino #
Demixing and Temperature effects in mixtures of 
two Bosonic species #
We investigate the properties of phase 
separation in a mixture of two bosonic species by means of 
path-integral quantum Monte Carlo by the two-worm 
algorithm. The mixture is trapped in a square optical 
lattice at different filling and temperature conditions. 
The work is focused on the study of the ground-state phase 
diagram where various quantum phases can arise depending 
on the interplay between intra-and inter-species 
interactions. Demixed phases, characterized by spatial 
separation of the two species, are studied in details 
determining under which conditions they can be stabilized. 
The influence of temperature, filling factor and harmonic 
trap on phase separation is also investigated. An 
interesting dependence of the degree of demixing from 
temperature has been found, suggesting new ways to measure 
the temperature of a two-component bosonic mixture.