Free energy and spin waves in superfluid 3He

2007 ◽  
pp. 411-426
Author(s):  
Ludwig Tewordt
Keyword(s):  
Free Energy ◽  
Spin Waves ◽  
Superfluid 3He

Spin waves in anisotropic superfluid 3He

1973 ◽  
Vol 46 (3) ◽  
pp. 173-174 ◽  
Author(s):  
K. Maki
Keyword(s):  
Spin Waves ◽  
Superfluid 3He

Spin waves in superfluid 3He

Nature ◽  
1977 ◽  
Vol 266 (5604) ◽  
pp. 680-681
Author(s):  
P. V. E. McClintock
Keyword(s):  
Spin Waves ◽  
Superfluid 3He

Transverse spin waves in normal and superfluid 3He

1987 ◽  
Vol 65 (11) ◽  
pp. 1330-1335 ◽  
Author(s):  
D. Candela ◽  
D. O. Edwards ◽  
A. Heff ◽  
N. Masuhara ◽  
D. S. Sherrill ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Spin Wave ◽  
Fermi Liquid ◽  
Spin Waves ◽  
Wave Spectrum ◽  
Superfluid 3He ◽  
Transverse Spin ◽  
Published Data ◽  
Normal Liquid ◽  
Spin Wave Spectrum

After a brief review of experiment and theory for transverse spin waves in normal liquid 3He, we compare previously published data at 0, 6.3, and 12.3 bar (1 bar = 100 kPa) in superfluid 3He–B with a new version of the theory of Combescot for the spin-wave spectrum. The new theory includes the Fermi-liquid parameters [Formula: see text] and [Formula: see text] (as well as [Formula: see text], which was in the old version). The equations give an excellent fit to the data at 0 bar using values of [Formula: see text] and [Formula: see text] from the normal liquid, and [Formula: see text] from the B-phase susceptibility. At 6.3 bar, the fit is not quite so good, perhaps because of nontrivial strong-coupling effects. At 12.3 bar, the experimental uncertainties make the comparison inconclusive.

Encultured minds, not error reduction minds

2020 ◽  
Vol 43 ◽  
Author(s):  
Robert Mirski ◽  
Mark H. Bickhard ◽  
David Eck ◽  
Arkadiusz Gut
Keyword(s):  
Free Energy ◽  
Error Reduction ◽  
Energy Principle ◽  
Free Energy Principle ◽  
Current Article

Abstract There are serious theoretical problems with the free-energy principle model, which are shown in the current article. We discuss the proposed model's inability to account for culturally emergent normativities, and point out the foundational issues that we claim this inability stems from.

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