Second-sound beyond Maxwell–Cattaneo: Nonlocal effects in hyperbolic heat transfer at the nanoscale
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Engineering Science"
DOI: 10.1016/j.ijengsci.2020.103328
Abstract: Abstract We investigate a recently proposed model of second-sound at the nanoscale—One that goes beyond the usual Maxwell–Catteneo theory of hyperbolic heat transfer. The model in question is based on a dynamical non-equilibrium temperature, denoted… read more here.
Keywords: second sound; hyperbolic heat; maxwell cattaneo; heat transfer ... See more keywords
Propagation of a second sound waves in a resonator with a deuterium gel
Sign Up to like & getrecommendations! Published in 2020 at "Low Temperature Physics"
DOI: 10.1063/10.0002147
Abstract: Investigations of the propagation of the second sound waves were made in a resonator with the presence of a deuterium-helium gel. The technique was used in experiments for measuring the parameters of standing waves in… read more here.
Keywords: second sound; sound waves; deuterium; propagation second ... See more keywords
Squeezed-field path-integral description of second sound in Bose-Einstein condensates
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.100.013602
Abstract: We propose a generalization of the Feynman path integral using squeezed coherent states. We apply this approach to the dynamics of Bose-Einstein condensates, which gives an effective low energy description that contains both a coherent… read more here.
Keywords: description second; field; path integral; einstein condensates ... See more keywords
Second Sound in Systems of One-Dimensional Fermions.
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DOI: 10.1103/physrevlett.119.266801
Abstract: We study sound in Galilean invariant systems of one-dimensional fermions. At low temperatures, we find a broad range of frequencies in which in addition to the waves of density there is a second sound corresponding… read more here.
Keywords: second sound; sound systems; one dimensional; systems one ... See more keywords
Graphite gets a second sound
Sign Up to like & getrecommendations! Published in 2019 at "Science"
DOI: 10.1126/science.364.6438.347-o
Abstract: Thermal Transport Between the two extremes of ballistic and diffusive lattice thermal transport is the potential for an exotic wave-like state known as second sound. Huberman et al. used fast, transient thermal grating measurements to… read more here.
Keywords: sound; sound graphite; gets second; thermal transport ... See more keywords
Observation of second sound in graphite at temperatures above 100 K
Sign Up to like & getrecommendations! Published in 2019 at "Science"
DOI: 10.1126/science.aav3548
Abstract: Graphite gets a second sound Between the two extremes of ballistic and diffusive lattice thermal transport is the potential for an exotic wave-like state known as second sound. Huberman et al. used fast, transient thermal… read more here.
Keywords: second sound; observation second; thermal transport; sound graphite ... See more keywords
First and Second Sound in Two-Dimensional Bosonic and Fermionic Superfluids
Sign Up to like & getrecommendations! Published in 2022 at "Symmetry"
DOI: 10.3390/sym14102182
Abstract: We review our theoretical results of the sound propagation in two-dimensional (2D) systems of ultracold fermionic and bosonic atoms. In the superfluid phase, characterized by the spontaneous symmetry breaking of the U(1) symmetry, there is… read more here.
Keywords: first second; two dimensional; second sound; bosonic ... See more keywords