Anderson–Bogoliubov Collective Excitations in Superfluid Fermi Gases at Nonzero Temperatures
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Low Temperature Physics"
DOI: 10.1007/s10909-019-02160-3
Abstract: The Anderson–Bogoliubov branch of collective excitations in a condensed Fermi gas is treated using the effective bosonic action of Gaussian pair fluctuations. The spectra of collective excitations are treated for finite temperature and momentum throughout… read more here.
Keywords: bogoliubov collective; collective excitations; excitations superfluid; fermi gases ... See more keywords
Coupling between graphene and intersubband collective excitations in quantum wells
Sign Up to like & getrecommendations! Published in 2017 at "Solid State Communications"
DOI: 10.1016/j.ssc.2017.06.002
Abstract: Abstract Recently, strong light-matter coupling between the electromagnetic modes in plasmonic metasurfaces with quantum-engineering electronic intersubband transitions in quantum wells has been demonstrated experimentally (Benz et al., [14], Lee et al., [15]). These novel materials… read more here.
Keywords: excitations quantum; intersubband collective; collective excitations; quantum wells ... See more keywords
Collective excitations of a charged Fermi superfluid in the BCS-BEC crossover
Sign Up to like & getrecommendations! Published in 2022 at "New Journal of Physics"
DOI: 10.1088/1367-2630/acdab5
Abstract: We consider collective excitations in the superfluid state of Fermi condensed charged gases. The dispersion and damping of collective excitations at nonzero temperatures are examined, and the coexistence and interaction of different branches of collective… read more here.
Keywords: fermi superfluid; charged fermi; superfluid bcs; collective excitations ... See more keywords
Collective excitations and tunneling dynamics in long bosonic Josephson junctions
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.100.033601
Abstract: We investigate the low-energy dynamics of two coupled anisotropic Bose-Einstein condensates forming a long Josephson junction. The theoretical study is performed in the framework of the two-dimensional Gross-Pitaevskii equation and the Bogoliubov-de Gennes formalism. We… read more here.
Keywords: dynamics long; long bosonic; excitations tunneling; collective excitations ... See more keywords
Collective excitations of a spherical ultradilute quantum droplet
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review A"
DOI: 10.1103/physreva.102.053303
Abstract: The authors theoretically investigate how collective excitations of a three-dimensional quantum droplet are affected by the beyond-mean-field quantum fluctuations and a weak harmonic trapping potential. The existence of the surface modes is shown to be… read more here.
Keywords: collective excitations; quantum droplet; excitations spherical; spherical ultradilute ... See more keywords
Collective excitations and universal broadening of cyclotron absorption in Dirac semimetals in a quantizing magnetic field
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.101.245206
Abstract: The spectrum of electromagnetic collective excitations in Dirac semimetals placed in a quantizing magnetic field is considered. We have found the Landau damping regions using the energy and momentum conservation law for allowed transitions between… read more here.
Keywords: field; quantizing magnetic; magnetic field; dirac semimetals ... See more keywords
Spectrum of collective excitations of a quantum fluid of polaritons
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.107.174507
Abstract: We use a recently developed high-resolution coherent probe spectroscopy method to investigate the dispersion of collective excitations of a polaritonic quantum fluid. We measure the dispersion relation with high energy and wavenumber resolution, which allows… read more here.
Keywords: quantum fluid; excitations quantum; spectrum collective; spectroscopy ... See more keywords
Few-body collective excitations beyond Kohn's theorem in quantum Hall systems
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.95.035150
Abstract: A relative coordinate breathing mode in the quantum Hall system is predicted to exist with different behavior under either Coulomb or dipole-dipole interactions. While Kohn's theorem predicts that any relative coordinate interaction will fail to… read more here.
Keywords: collective excitations; hall; quantum hall; kohn theorem ... See more keywords
Collective Excitations of Self-Bound Droplets of a Dipolar Quantum Fluid.
Sign Up to like & getrecommendations! Published in 2017 at "Physical review letters"
DOI: 10.1103/physrevlett.119.255302
Abstract: We calculate the collective excitations of a dipolar Bose-Einstein condensate in the regime where it self-binds into droplets stabilized by quantum fluctuations. We show that the filament-shaped droplets act as a quasi-one-dimensional waveguide along which… read more here.
Keywords: droplets dipolar; self bound; collective excitations; dipolar quantum ... See more keywords
Collective Excitations in Chiral Stoner Magnets.
Sign Up to like & getrecommendations! Published in 2023 at "Physical review letters"
DOI: 10.1103/physrevlett.130.206701
Abstract: We argue that spin- and valley-polarized metallic phases recently observed in graphene bilayers and trilayers support chiral edge modes that allow spin waves to propagate ballistically along system boundaries without backscattering. The chiral edge behavior… read more here.
Keywords: excitations chiral; edge modes; chiral stoner; stoner magnets ... See more keywords