Second Sound in Solid Helium

1966 ◽  
Vol 16 (18) ◽  
pp. 789-791 ◽  
Author(s):  
C. C. Ackerman ◽  
B. Bertman ◽  
H. A. Fairbank ◽  
R. A. Guyer
Keyword(s):  
Solid Helium ◽  
Second Sound

Second Sound in Solid Helium-3

1969 ◽  
Vol 22 (15) ◽  
pp. 764-766 ◽  
Author(s):  
C. C. Ackerman ◽  
W. C. Overton
Keyword(s):  
Solid Helium ◽  
Second Sound ◽  
Helium 3

“Second Sound” in Solid Helium

1970 ◽  
Vol 222 (5) ◽  
pp. 92-101 ◽  
Author(s):  
Bernard Bertman ◽  
David J. Sandiford
Keyword(s):  
Solid Helium ◽  
Second Sound

Mobility of ions in solid helium

1973 ◽  
Vol 34 (11-12) ◽  
pp. 989-999 ◽  
Author(s):  
D. Marty ◽  
F.I.B. Williams
Keyword(s):  
Solid Helium ◽  
Mobility Of Ions

Second sound seen

2021 ◽  
Author(s):  
Sandro Stringari
Keyword(s):  
Second Sound

Explicit Stability for a Porous Thermoelastic System with Second Sound and Distributed Delay Term

2021 ◽  
Vol 7 (2) ◽  
Author(s):  
Abdelhak Djebabla ◽  
Abdelbaki Choucha ◽  
Djamel Ouchenane ◽  
Khaled Zennir
Keyword(s):  
Distributed Delay ◽  
Second Sound ◽  
Delay Term

scholarly journals Non-equilibrium effective field theory and second sound

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
Michael J. Landry
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Sound Wave ◽  
Effective Field ◽  
Second Sound ◽  
Gauge Symmetries ◽  
Sound Modes ◽  
State Of Matter ◽  
The Difference ◽  
Non Equilibrium

Abstract We investigate the phenomenon of second sound in various states of matter from the perspective of non-equilibrium effective field theory (EFT). In particular, for each state of matter considered, we find that at least two (though sometimes multiple) qualitatively different EFTs exist at finite temperature such that there is always at least one EFT with a propagating second-sound wave and at least one with no such second-sound wave. To aid in the construction of these EFTs, we use the method of cosets developed for non-equilibrium systems. It turns out that the difference between the EFTs with and without second-sound modes can be understood as arising from different choices of a new kind of inverse Higgs constraint. Finally, we demonstrate that it is possible to bypass the need for new inverse Higgs constraints by formulating EFTs on a new kind of manifold that is like the usual fluid worldvolume, but with reduced gauge symmetries.

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