# Mott-insulator–to–superfluid transition in Bose-Bose mixtures in a two-dimensional lattice

@article{Guglielmino2010MottinsulatortosuperfluidTI, title={Mott-insulator–to–superfluid transition in Bose-Bose mixtures in a two-dimensional lattice}, author={Marco Guglielmino and Vittorio Penna and Barbara Capogrosso-Sansone}, journal={Physical Review A}, year={2010}, volume={82}, pages={021601} }

We perform a numeric study (worm algorithm Monte Carlo simulations) of ultracold two-component bosons in two-dimensional optical lattices. We study how the Mott-insulator--to--superfluid transition is affected by the presence of a second superfluid bosonic species. We find that, at fixed interspecies interaction, the upper and lower boundaries of the Mott lobe are differently modified. The lower boundary is strongly renormalized even for relatively low filling factor of the second component and…

## 14 Citations

Mott-insulator-SF transition lobe in the presence of a second superfluid component

- Physics
- 2011

A two-component bosonic mixture loaded in a two-dimensional optical lattice is analyzed. By means of Mean-Field techniques and Worm algorithm Monte Carlo simulations, we study the effect of the…

Effects of finite temperature on the robustness of the Mott insulator phase in a pseudo-two-dimensional Bose-Hubbard model

- Physics
- 2011

We study the superfluid-Mott insulator (SF-MI) transition in a two-dimensional optical lattice system and employ the Bose–Hubbard model in three dimensions with a combined potential of an optical…

Magnetic properties of commensurate Bose-Bose mixtures in one-dimensional optical lattices

- Physics
- 2013

We investigate magnetic properties of strongly interacting bosonic mixtures confined in one dimensional geometries, focusing on recently realized 87Rb-41K gases with tunable interspecies…

Magnetic properties of the second Mott lobe in pairing Hamiltonians

- Physics
- 2011

We explore the Mott insulating state of single-band bosonic pairing Hamiltonians using analytical approaches and large-scale density matrix renormalization group calculations. We focus on the second…

Inter-species entanglement of Bose-Bose mixtures trapped in optical lattices

- Physics
- 2015

In the present work we discuss inter-species entanglement in Bose-Bose mixtures trapped in optical lattices. This work is motivated by the observation that, in the presence of a second component, the…

ASYMMETRIC TWO-COMPONENT HARD-CORE BOSON MIXTURES IN A ONE-DIMENSIONAL OPTICAL LATTICE

- Physics
- 2013

We study asymmetric two-component mixtures of hard-core bosons in one dimension by carrying out quantum Monte Carlo calculations. We have found that the background bosons have different roles in…

Variational study of phase diagrams of spin–orbit coupled bosons

- Physics
- 2016

We use a variational order method to explore the ground state phase diagrams of spin–orbit coupled Bose atoms in optical lattices. By properly parameterizing the order with an ansatz function for…

Residual Entropy and Critical Behavior of Two Interacting Boson Species in a Double Well

- Computer Science, MedicineEntropy
- 2018

The effectiveness of bipartite residual entropy as a critical indicator at non-zero temperature is unchanged when considering a restricted combination of energy eigenstates, and the fully-analytical variational approach based on su(2) coherent states provides a considerably good approximation of the entanglement entropy.

Spectral properties of attractive bosons in a ring lattice including a single-site potential

- Physics
- 2011

The ground-state properties of attractive bosons trapped in a ring lattice including a single attractive potential well with an adjustable depth are investigated. The energy spectrum is reconstructed…

2D Dilute Bose Mixture at Low Temperatures

- Physics
- 2017

The thermodynamic and superfluid properties of the dilute two-dimensional binary Bose mixture at low temperatures are discussed. We also considered the problem of the emergence of the long-range…

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