Coherent quadrupole-octupole modes and split parity-doublet spectra in odd-Anuclei

2007 ◽  
Vol 76 (3) ◽  
Author(s):  
N. Minkov ◽  
S. Drenska ◽  
P. Yotov ◽  
S. Lalkovski ◽  
D. Bonatsos ◽  
...  
Keyword(s):  
Parity Doublet

scholarly journals SKYRMIONS, SPECTRAL FLOW AND PARITY DOUBLES

1999 ◽  
Vol 14 (03) ◽  
pp. 445-461 ◽  
Author(s):  
A. P. BALACHANDRAN ◽  
SACHINDEO VAIDYA
Keyword(s):  
Degrees Of Freedom ◽  
Index Theorem ◽  
Baryon Number ◽  
Low Energy ◽  
Light Nuclei ◽  
Spectral Flow ◽  
Winding Number ◽  
Parity Doublet ◽  
Doublet Structure ◽  
Topological Interaction

It is well-known that the winding number of the Skyrmion can be identified as the baryon number. We show in this paper that this result can also be established using the Atiyah–Singer index theorem and spectral flow arguments. We argue that this proof suggests that there are light quarks moving in the field of the Skyrmion. We then show that if these light degrees of freedom are averaged out, the low energy excitations of the Skyrmion are in fact spinorial. A natural consequence of our approach is the prediction of a [Formula: see text] state and its excitations in addition to the nucleon and delta. Using the recent numerical evidence for the existence of Skyrmions with discrete spatial symmetries, we further suggest that the the low energy spectrum of many light nuclei may possess a parity doublet structure arising from a subtle topological interaction between the slow Skyrmion and the fast quarks. We also present tentative experimental evidence supporting our arguments.

Parity-doublet 16O+12C cluster bands in 28Si

2004 ◽  
Vol 578 (3-4) ◽  
pp. 304-309 ◽  
Author(s):  
Shigeo Ohkubo ◽  
Kotoe Yamashita
Keyword(s):  
Parity Doublet

scholarly journals Energy separation of the 1+/1−parity doublet in20Ne

2012 ◽  
Vol 366 ◽  
pp. 012003
Author(s):  
J Beller ◽  
J Wagner ◽  
M Ahmed ◽  
D Deleanu ◽  
D M Filipescu ◽  
...  
Keyword(s):  
Energy Separation ◽  
Parity Doublet

Parity doublet levels in superdeformation

1993 ◽  
Vol 317 (1-2) ◽  
pp. 1-8 ◽  
Author(s):  
K. Sugawara-Tanabe ◽  
A. Arima
Keyword(s):  
Parity Doublet

Does a 5/2+-5/2−ground-state parity doublet exist in?229

1991 ◽  
Vol 44 (5) ◽  
pp. R1728-R1731 ◽  
Author(s):  
V. Grafen ◽  
B. Ackermann ◽  
H. Baltzer ◽  
T. Bihn ◽  
C. Günther ◽  
...  
Keyword(s):  
Ground State ◽  
Parity Doublet
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