Variational approach to the problem of the energy spectrum of surface electrons over a liquid helium film

2004 ◽  
Vol 30 (3) ◽  
pp. 199-202 ◽  
Author(s):  
S. S. Sokolov
2021 ◽  
Vol 126 (10) ◽  
Author(s):  
Erika Kawakami ◽  
Asem Elarabi ◽  
Denis Konstantinov

1998 ◽  
pp. 1497-1504 ◽  
Author(s):  
M. J. DiPirro ◽  
P. J. Shirron ◽  
D. C. McHugh

1969 ◽  
Vol 41 (4) ◽  
pp. 919-940 ◽  
Author(s):  
Sigenobu Sunakawa ◽  
Shuichiro Yamasaki ◽  
Takeji Kebukawa

1993 ◽  
Vol 91 (5-6) ◽  
pp. 371-389 ◽  
Author(s):  
Yu. Z. Kovdrya ◽  
V. A. Nikolayenko ◽  
O. I. Kirichek ◽  
S. S. Sokolov ◽  
V. N. Grigor'ev

2007 ◽  
Vol 21 (21) ◽  
pp. 1383-1390
Author(s):  
DE-HUA LIN ◽  
PING ZOU ◽  
ZHONG-WEI ZHANG ◽  
HONG-LEI WANG ◽  
JUN PAN ◽  
...  

In this paper, we study the elementary excitations and energy spectrum proposed by L. D. Landau in liquid helium II. On the basis of the energy spectrum for the phonons and rotons, we put forward a uniform expression of energy spectrum in liquid helium II, which is limited in a specific temperature range. By using the wave function for low energy excited states proposed by R. P. Feynman or the modified one proposed by Feynman and Cohen, it can be found that the estimated energy spectrum is quite different from the experimental data, especially for the region with large wave numbers. By proposing an improved form for the wave function, we re-analyze the energy spectrum in liquid helium II, and our results show a better agreement with the experimental data.


1969 ◽  
Vol 178 (1) ◽  
pp. 389-399 ◽  
Author(s):  
K. A. Pickar ◽  
K. R. Atkins

1967 ◽  
Vol 19 (21) ◽  
pp. 1224-1227 ◽  
Author(s):  
R. E. Little ◽  
K. R. Atkins

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