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Trapped one-dimensional ideal Fermi gas with a single impurity

Autor
Astrakharchik, G.; Brouzos, I.
Tipus d'activitat
Article en revista
Revista
Physical review A
Data de publicació
2013-08-02
Volum
88
Número
2
DOI
https://doi.org/10.1103/PhysRevA.88.021602 Obrir en finestra nova
Projecte finançador
GRUP DE SIMULACIO PER ORDINADOR EN MATERIA CONDENSADA
SUPERFLUIDEZ Y CONDESACION DE BOSE-EINSTEIN EN MATERIA ULTRAFRIA
URL
http://pra.aps.org/abstract/PRA/v88/i2/e021602 Obrir en finestra nova
Resum
Ground-state properties of a single impurity in a one-dimensional Fermi gas are investigated in uniform and trapped geometries. The energy of a trapped system is obtained (i) by generalizing the McGuire expression from a uniform to trapped system (ii) within the local density approximation (iii) using the perturbative approach in the case of a weakly interacting impurity and (iv) diffusion Monte Carlo method. We demonstrate that there is a closed formula based on the exact solution of the homoge...
Paraules clau
Arbitrary Couplings, Diffusion Monte Carlo Method, Energy Contribution, Ground State Properties, One-dimensional Fermi Gas, Pair Correlation Functions, Perturbative Approach, Spatial Properties
Grup de recerca
FIPACOM - First-principles approaches to condensed matter physics: quantum effects and complexity

Participants