10 papers
Mobile impurity interacting with a Hubbard chain and the role of Friedel oscillations
Felipe Isaule, Abel Rojo-Francà s, Duc Tuan Hoang +3
This work examines a mobile impurity interacting with a bath of a few spin- and spin- fermions in a small one-dimensional open lattice system. We study ground…
Coordinate space representation of a one-dimensional odd-parity pseudopotential
Marc Camus-Sais, Abel Rojo-Francà s, Grigori E. Astrakharchik +1
We propose a discrete-space representation of a one-dimensional zero-range odd-parity pseudopotential. The proposed representation is validated by applying it to the analytically s…
Bose-Einstein condensation in exotic lattice geometries
Kamil Dutkiewicz, Marcin PÅodzieÅ, Abel Rojo-Francà s +3
Modern quantum engineering techniques allow for synthesizing quantum systems in exotic lattice geometries, from self-similar fractal networks to negatively curved hyperbolic graphs…
Quantum Monte Carlo study of systems interacting via long-range interactions mediated by a cavity
Marta DomÃnguez-Navarro, Abel Rojo-Francà s, Bruno Juliá-DÃaz +1
We study one-dimensional quantum gases in continuous space with cavity-mediated infinite-range interactions using variational and diffusion Monte Carlo methods. Starting from the e…
Counterflow of lattice polarons in harmonically confined optical lattices
Felipe Isaule, Abel Rojo-Francà s, Luis Morales-Molina +1
We study a mobile impurity in a one-dimensional harmonically confined optical lattice interacting repulsively with a bosonic bath. The behavior of the impurity across baths with su…
Bardeen-Cooper-Schrieffer State Representation and Pairing in the Fermionic Tonks-Girardeau Gas
Francesc Sabater, Abel Rojo-Francà s, Grigori E. Astrakharchik +1
We introduce an alternative expression for the ground state wave function of the fermionic Tonks-Girardeau gas. Our wave function is constructed based on the occupation numbers and…