Quasi-deuteron model at low renormalization group resolution
Quasi-deuteron model at low renormalization group resolution
复制标题
低重正化群分辨率下的准氘核模型
DOI:
10.1103/physrevc.106.024324
复制
发表时间:
2022
影响因子:
3.1
通讯作者:
Hisham, M. A.
中科院分区:
文献类型:
--
作者:
Tropiano, A. J.;Bogner, S. K.;Furnstahl, R. J.;Hisham, M. A.
Background:The quasi-deuteron model introduced by Levinger is used to explain cross sections for knocking out high-momentum protons in photoabsorption on nuclei. This is within a framework we characterize as exhibiting high renormalization group (RG) resolution. Assuming a one-body reaction operator, the nuclear wave function must include two-body short-range correlations (SRCs) with deuteronlike quantum numbers. In Phys. Rev. C 104, 034311 (2021)2469-998510.1103/PhysRevC.104.034311, we showed that SRC physics can be naturally accounted for atlowRG resolution.Purpose:Here we describe the quasi-deuteron model at low RG resolution and determine the Levinger constant, which is proportional to the ratio of nuclear photoabsorption to that for photodisintegration of a deuteron.Method:We extract the Levinger constant based on the ratio of momentum distributions at high relative momentum. We compute momentum distributions evolved under similarity RG (SRG) transformations where the SRC physics is shifted into the operator as a universal two-body term. The short-range nature of this operator motivates using local-density approximations with uncorrelated wave functions in evaluating nuclear matrix elements, which greatly simplifies the analysis. The operator must be consistently matched to the RG scale and scheme of the interaction for a reliable extraction. We apply SRG transformations to different nucleon-nucleon (NN) interactions and use the deuteron wave functions and Weinberg eigenvalues to determine approximate matching scales.Results:We predict the Levinger constant for several NN interactions and a wide range of nuclei comparing to experimental extractions.Conclusions:The predictions at low RG resolution are in good agreement with experiment when starting with a hard NN interaction and the initial operator. Similar agreement is found using soft NN interactions when the additional two-body operator induced by evolution from hard to soft is included.
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DOI:
10.1016/j.nuclphysa.2005.08.024
发表时间:
2005
期刊:
Nuclear Physics
影响因子:
--
作者:
S. Bogner;A. Schwenk;R. Furnstahl;A. Nogga
通讯作者:
A. Nogga
影响因子:
64.8
作者:
A. Schmidt;J. Pybus;R. Weiss;E. Segarra;A. Hrnjic;A. Denniston;O. Hen;E. Piasetzky;L. Wein
通讯作者:
A. Schmidt;J. Pybus;R. Weiss;E. Segarra;A. Hrnjic;A. Denniston;O. Hen;E. Piasetzky;L. Wein
DOI:
10.1016/0375-9474(81)90516-9
发表时间:
1981-09
期刊:
Nuclear Physics
影响因子:
--
作者:
A. Lepretre;H. Beil;R. Bergère;P. Carlos;J. Fagot;A. Miniac;A. Veyssière
通讯作者:
A. Lepretre;H. Beil;R. Bergère;P. Carlos;J. Fagot;A. Miniac;A. Veyssière
影响因子:
64.8
作者:
B. M. A. O. S. E. M. L. B. S. M. A. H. J. I. L. M. M. Schmookler Duer Schmidt Hen Gilad Piasetzky Strikm-B.-M.-A.-O.-S.-E.-M.-L.-B.-S.-M.-A.-H.-J.-I.-L.-M.-2080539512;B. Schmookler;M. Duer;A. Schmidt
通讯作者:
B. M. A. O. S. E. M. L. B. S. M. A. H. J. I. L. M. M. Schmookler Duer Schmidt Hen Gilad Piasetzky Strikm-B.-M.-A.-O.-S.-E.-M.-L.-B.-S.-M.-A.-H.-J.-I.-L.-M.-2080539512;B. Schmookler;M. Duer;A. Schmidt
DOI:
--
发表时间:
1978
期刊:
影响因子:
--
作者:
A. Lepretre;H. Beil;R. Bergère;P. Carlos;J. Fagot;A. Veyssière;J. Ahrens;P. Axel;U. Kneissl
通讯作者:
U. Kneissl