标题： 反核子在FAIR能量下的光学势有多深 显示英文标题

标题： How Deep is the Antinucleon Optical Potential at FAIR energies

摘要： 反核子在核介质中的相互作用中的关键问题是反核子-核光学势的深度。 在本工作中，我们在非线性导数（NLD）模型框架下研究了这一问题，该模型一致地描述了核物质的集体性质和核子-核相互作用的狄拉克现象学。 我们将NLD模型应用于核物质中的反核子相互作用，并发现矢量和标量自能随能量和密度的增加而显著降低，因此在零动量下以及特别是在FAIR能量下，光学势受到强烈抑制。 这与现有的实证信息一致，因此解决了相对论平均场（RMF）模型中G宇称论证不相容的问题。 我们总结了我们的结果对未来在FAIR的研究活动的相关性。 显示英文摘要

摘要： The key question in the interaction of antinucleons in the nuclear medium concerns the deepness of the antinucleon-nucleus optical potential. In this work we study this task in the framework of the non-linear derivative (NLD) model which describes consistently bulk properties of nuclear matter and Dirac phenomenology of nucleon-nucleus interactions. We apply the NLD model to antinucleon interactions in nuclear matter and find a strong decrease of the vector and scalar self-energies in energy and density and thus a strong suppression of the optical potential at zero momentum and, in particular, at FAIR energies. This is in agreement with available empirical information and, therefore, resolves the issue concerning the incompatibility of G-parity arguments in relativistic mean-field (RMF) models. We conclude the relevance of our results for the future activities at FAIR.