Effect of Attractive Forces on the Solid-Superfluid Transition inHe4at Absolute Zero

1966 ◽  
Vol 149 (1) ◽  
pp. 154-164 ◽  
Author(s):  
J. F. Fernandez ◽  
H. A. Gersch
Keyword(s):  
Absolute Zero ◽  
Superfluid Transition

QUANTUM CELL MODEL FOR He II AT NONZERO TEMPERATURE

1966 ◽  
Vol 44 (11) ◽  
pp. 2775-2787
Author(s):  
G. C. Knollman
Keyword(s):  
Phase Transition ◽  
Specific Volume ◽  
Cell Model ◽  
Model Development ◽  
Absolute Zero ◽  
Superfluid Transition ◽  
Superfluid Phase ◽  
Nonzero Temperature ◽  
Repulsive Energy ◽  
Zero Momentum

A previous quantum cell-model development is expanded to treat the solid-superfluid phase transition and the zero-momentum occupation at temperatures other than absolute zero. Application is made to liquid He II, which is studied at various pressures out to temperatures of about a degree absolute. The effective repulsive energy, along the solid–superfluid transition, is determined for pairs of 4He atoms localized in cells of volume equal to the specific volume.

Solid-Superfluid Transition inHe4at Absolute Zero

1965 ◽  
Vol 139 (6A) ◽  
pp. A1769-A1782 ◽  
Author(s):  
H. A. Gersch ◽  
J. M. Tanner
Keyword(s):  
Absolute Zero ◽  
Superfluid Transition

Systematic effects in observed parallaxes

1978 ◽  
Vol 48 ◽  
pp. 31-35
Author(s):  
R. B. Hanson
Keyword(s):  
Error Estimates ◽  
Zero Point ◽  
Absolute Zero ◽  
Apparent Magnitude ◽  
Coherent System ◽  
Preliminary Results ◽  
General Catalogue ◽  
Systematic Effects ◽  
New Evidence ◽  
Right Ascension

Several outstanding problems affecting the existing parallaxes should be resolved to form a coherent system for the new General Catalogue proposed by van Altena, as well as to improve luminosity calibrations and other parallax applications. Lutz has reviewed several of these problems, such as: (A) systematic differences between observatories, (B) external error estimates, (C) the absolute zero point, and (D) systematic observational effects (in right ascension, declination, apparent magnitude, etc.). Here we explore the use of cluster and spectroscopic parallaxes, and the distributions of observed parallaxes, to bring new evidence to bear on these classic problems. Several preliminary results have been obtained.

The Third Law of Thermodynamics

2018 ◽  
Author(s):  
Dennis Sherwood ◽  
Paul Dalby
Keyword(s):  
Absolute Zero ◽  
The Third ◽  
Third Law Of Thermodynamics ◽  
Third Law ◽  
The Absolute

The Third Law was introduced in Chapter 9; this chapter develops the Third Law more fully, introducing absolute entropies, and examining how adiabatic demagnetisation can be used to approach the absolute zero of temperature.

scholarly journals Trapped individual ion at absolute zero temperature

1989 ◽  
Vol 86 (15) ◽  
pp. 5671-5671 ◽  
Author(s):  
N. Yu ◽  
H. Dehmelt ◽  
W. Nagourney
Keyword(s):  
Absolute Zero ◽  
Zero Temperature ◽  
Individual Ion
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