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001     897210
005     20240610120658.0
024 7 _ |a 10.1140/epja/s10050-021-00522-8
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024 7 _ |a 1434-6001
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024 7 _ |a 1434-601X
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024 7 _ |a 2128/28845
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037 _ _ |a FZJ-2021-03676
082 _ _ |a 530
100 1 _ |a Le, Hoai
|0 P:(DE-Juel1)168554
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245 _ _ |a S-shell $\varLambda \varLambda$ hypernuclei based on chiral interactions
260 _ _ |a Heidelberg
|c 2021
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336 7 _ |a ARTICLE
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520 _ _ |a We generalize the Jacobi no-core shell model (J-NCSM) to study double-strangeness hypernuclei. All particle conversions in the strangeness S=−1,−2 sectors are explicitly taken into account. In two-body space, such transitions may lead to the coupling between states of identical particles and of non-identical ones. Therefore, a careful consideration is required when determining the combinatorial factors that connect the many-body potential matrix elements and the free-space two-body potentials. Using second quantization, we systematically derive the combinatorial factors in question for S=0,−1,−2 sectors. As a first application, we use the J-NCSM to investigate ΛΛ s-shell hypernuclei based on hyperon-hyperon (YY) potentials derived within chiral effective field theory at leading order (LO) and up to next-to-leading order (NLO). We find that the LO potential overbinds 6ΛΛHe while the prediction of the NLO interaction is close to experiment. Both interactions also yield a bound state for 5ΛΛHe. The 4ΛΛH system is predicted to be unbound.
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536 _ _ |a DFG project 196253076 - TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik (196253076)
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700 1 _ |a Haidenbauer, Johann
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700 1 _ |a Meißner, Ulf-G.
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700 1 _ |a Nogga, Andreas
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773 _ _ |a 10.1140/epja/s10050-021-00522-8
|g Vol. 57, no. 7, p. 217
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|t The European physical journal / A
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|y 2021
|x 1434-601X
856 4 _ |u https://juser.fz-juelich.de/record/897210/files/Le2021_Article_S-shellVarLambdaVarLambda%CE%9B%CE%9BHyp-1.pdf
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