IMSRG with flowing 3 body operators, and approximations thereof

التفاصيل البيبلوغرافية
العنوان: IMSRG with flowing 3 body operators, and approximations thereof
المؤلفون: Stroberg, S. R., Morris, T. D., He, B. C.
سنة النشر: 2024
المجموعة: Nuclear Theory
مصطلحات موضوعية: Nuclear Theory
الوصف: We explore the impact of retaining three-body operators within the in-medium similarity renormalization group (IMSRG), as well as various approximations schemes. After studying two toy problems, idential fermions with a contact interaction and the Lipkin-Meshkov-Glick model, we employ the valence-space formulation of the IMSRG to investigate the even-$A$ carbon isotopes with a chiral two-body potential. We find that retaining only those commutators expressions that scale as $N^7$ provides an excellent approximation of the full three-body treatment.
Comment: 18 pages, 11 figures
نوع الوثيقة: Working Paper
الوصول الحر: http://arxiv.org/abs/2406.13010Test
رقم الانضمام: edsarx.2406.13010
قاعدة البيانات: arXiv