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Energy weighted sum rules for spectral functions in nuclear matter
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The energy weighted sum rule of single-particle spectral functions in nuclear matter is studied. The spectral functions include the influence of short-range correlations as generated by the Reid potential in the framework of the self-consistent Greens function method. For the range of momenta studied, the sum rule is rather accurately fulfilled numerically (within 5%). It is observed that the high-energy tail of the particle part of the spectral function exhausts most of the sum rule, which confirms the need for the appearance of single-particle strength at very high energies.
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POLLS MARTÍ, Artur, et al. Energy weighted sum rules for spectral functions in nuclear matter. Physical Review C. 1994. Vol. 49, num. 6, pags. 3050-3054. ISSN 0556-2813. [consulted: 8 of June of 2026]. Available at: https://hdl.handle.net/2445/12238