scholarly journals Universality of many-body two-nucleon momentum distributions: Correlated nucleon spectral function of complex nuclei

2017 ◽  
Vol 96 (6) ◽  
Author(s):  
Claudio Ciofi degli Atti ◽  
Hiko Morita
Keyword(s):  
Spectral Function ◽  
Many Body ◽  
Nucleon Momentum ◽  
Momentum Distributions ◽  
Complex Nuclei

Realistic many-body wave functions and nucleon momentum distributions in finite nuclei

1986 ◽  
Vol 177 (2) ◽  
pp. 135-140 ◽  
Author(s):  
O. Benhar ◽  
C. Ciofi Degli Atti ◽  
S. Liuti ◽  
G. Salmè
Keyword(s):  
Body Wave ◽  
Wave Functions ◽  
Many Body ◽  
Nucleon Momentum ◽  
Momentum Distributions ◽  
Finite Nuclei

scholarly journals Polaron Problems in Ultracold Atoms: Role of a Fermi Sea across Different Spatial Dimensions and Quantum Fluctuations of a Bose Medium

Atoms ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 18
Author(s):  
Hiroyuki Tajima ◽  
Junichi Takahashi ◽  
Simeon Mistakidis ◽  
Eiji Nakano ◽  
Kei Iida
Keyword(s):  
Spectral Function ◽  
Einstein Condensate ◽  
Three Dimensions ◽  
Quantum Gas ◽  
Many Body ◽  
Bose Einstein Condensate ◽  
Spatial Dimensions ◽  
Three Body ◽  
Bose Einstein ◽  
The Impact

The notion of a polaron, originally introduced in the context of electrons in ionic lattices, helps us to understand how a quantum impurity behaves when being immersed in and interacting with a many-body background. We discuss the impact of the impurities on the medium particles by considering feedback effects from polarons that can be realized in ultracold quantum gas experiments. In particular, we exemplify the modifications of the medium in the presence of either Fermi or Bose polarons. Regarding Fermi polarons we present a corresponding many-body diagrammatic approach operating at finite temperatures and discuss how mediated two- and three-body interactions are implemented within this framework. Utilizing this approach, we analyze the behavior of the spectral function of Fermi polarons at finite temperature by varying impurity-medium interactions as well as spatial dimensions from three to one. Interestingly, we reveal that the spectral function of the medium atoms could be a useful quantity for analyzing the transition/crossover from attractive polarons to molecules in three-dimensions. As for the Bose polaron, we showcase the depletion of the background Bose-Einstein condensate in the vicinity of the impurity atom. Such spatial modulations would be important for future investigations regarding the quantification of interpolaron correlations in Bose polaron problems.

scholarly journals Nucleon momentum distributions in asymmetric nuclear matter

2019 ◽  
Vol 100 (5) ◽  
Author(s):  
Z. X. Yang ◽  
X. L. Shang ◽  
G. C. Yong ◽  
W. Zuo ◽  
Y. Gao
Keyword(s):  
Nuclear Matter ◽  
Asymmetric Nuclear Matter ◽  
Nucleon Momentum ◽  
Momentum Distributions

Publisher’s Note: Two-Nucleon Momentum Distributions Measured inHe3(e,e′pp)n[Phys. Rev. Lett.PRLTAO0031-900792, 052303 (2004)]

2004 ◽  
Vol 92 (9) ◽  
Author(s):  
R. A. Niyazov ◽  
L. B. Weinstein ◽  
G. Adams ◽  
P. Ambrozewicz ◽  
E. Anciant ◽  
...  
Keyword(s):  
Nucleon Momentum ◽  
Momentum Distributions

NUCLEAR FORM FACTORS AND NUCLEON MOMENTUM DISTRIBUTIONS IN NUCLEI

1995 ◽  
Vol 04 (02) ◽  
pp. 371-384 ◽  
Author(s):  
VLADIMIR P. GARISTOV
Keyword(s):  
Excited States ◽  
Electron Scattering ◽  
Liquid Drop ◽  
Form Factors ◽  
Simple Liquid ◽  
Nuclear Surface ◽  
Elastic Electron Scattering ◽  
Nucleon Momentum ◽  
Momentum Distributions ◽  
Surface Diffuseness

A simultaneous description of nuclear form factors and momentum distributions for ground and collective excited states is presented using a simple liquid drop model with an oscillating nuclear surface. The influence of the nuclear surface diffuseness over nuclear form factors and nucleon momentum distributions for a large region of mass number is investigated. Mean square radii of nuclei in one-phonon excited states are discussed. Quasi-elastic electron scattering y-scaling functions are presented and compared with those extracted from experimental data.

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