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Dynamic structure function of a cold Fermi gas at unitarity

Author
Astrakharchik, G.; Boronat, J.; Krotscheck, E.; Lichtenegger, T.
Type of activity
Journal article
Journal
Journal of physics: conference series
Date of publication
2014-08-14
Volume
529
Number
1
DOI
https://doi.org/10.1088/1742-6596/529/1/012009 Open in new window
Project funding
Fluidos y sólidos cuánticos fuertamente correlacionados (FIS2011-25275)
GRUP DE SIMULACIO PER ORDINADOR EN MATERIA CONDENSADA
Repository
http://hdl.handle.net/2117/26519 Open in new window
URL
http://iopscience.iop.org/1742-6596/529/1/012009/pdf/1742-6596_529_1_012009.pdf Open in new window
Abstract
We present a theoretical study of the dynamic structure function of a resonantly interacting two-component Fermi gas at zero temperature. Our approach is based on dynamic many-body theory able to describe excitations in strongly correlated Fermi systems. The fixed-node diffusion Monte Carlo method is used to produce the ground-state correlation functions which are used as an input for the excitation theory. Our approach reproduces recent Bragg scattering data in both the density and the spin cha...
Citation
Astrakharchik, G. [et al.]. Dynamic structure function of a cold Fermi gas at unitarity. "Journal of physics: conference series", 14 Agost 2014, vol. 529, núm. 1.
Keywords
Diffusion Monte Carlo method, Dynamic response, Dynamic structure, Electron gas, Excitation theory, Fermions, Ground-state correlation, Many-body theory, Monte Carlo methods, Theoretical study, Two-component fermi gas, Zero temperatures
Group of research
SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity

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