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Realistic Calculations of Excitations in Nuclear Matter


Kwong, Nai-Hang (1983) Realistic Calculations of Excitations in Nuclear Matter. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/wcb1-mh63.


A numerical method has been developed to solve the RPA equation, exchange term included, in nuclear matter. The dynamic form factor S(q, ω) is extracted for several v4 and v6 phenomenological potentials, including the d1-potential of Gogny et al. The limits of validity of the long-wavelength (Landau) approximation and the often adopted local-kernel approximation are discussed. Substantial disagreements with the exact results are found for the latter. The method is then applied to solve a Jastrow-correlated extension of the RPA equation, using the hardcore OMY potential. Results of calculations performed in two-body cluster approximation and Fermi-Hypernetted-Chain (FHNC) approximation are compared. The two-body results predict an instability against density fluctuations, which disappears at the FHNC level. The validity and consequences of employing the FHNC effective potential within the self-consistent HF/RPA framework are discussed. Future developments include applying the method to other Fermi systems such as liquid 3He and the microscopic calculation of Landau parameters.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Physics
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Koonin, Steven E.
Thesis Committee:
  • Koonin, Steven E. (chair)
  • Frautschi, Steven C.
  • Barnes, Charles A.
  • Vogel, Petr
Defense Date:24 September 1982
Additional Information:Thesis file (PDF) missing pp. 142 and 153.
Funding AgencyGrant Number
Record Number:CaltechTHESIS:10182019-162452942
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:11828
Deposited By: Mel Ray
Deposited On:05 May 2020 00:02
Last Modified:19 Apr 2021 22:28

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