Nuclear response function at finite temperature
- Center for Theoretical Physics, Laboratory for Nuclear Science Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts (USA)
The static-path approximation is applied to the real-time response function of a nucleus at finite temperature. This approximation is shown to become accurate in the high-temperature limit for an appropriately energy-smoothed strength function. An additional local approximation to overlap integrals yields the familiar adiabatic approximation. These two approximations are compared with exact results for the Lipkin model. For a sufficiently large ratio of two-body interaction to single-particle energy, the static-path approximation accurately describes the exact strength function. For parameters characteristic of nuclear shape transitions, the static-path approximation is not reliable and the adiabatic approximation is qualitatively in error.
- DOE Contract Number:
- AC02-76ER03069
- OSTI ID:
- 5253135
- Journal Information:
- Physical Review, C (Nuclear Physics); (United States), Vol. 44:2; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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