Three-boson stability for boosted interactions towards the zero-range limit

Three-boson stability for boosted interactions towards the zero-range limit
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三玻色子稳定性可增强相互作用至零范围极限

DOI:
10.1016/j.physletb.2021.136773
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发表时间:
2021
期刊:
影响因子:
4.4
通讯作者:
Hadizadeh, M.R.
Hadizadeh, M.R.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Mohseni, K.;Chaves, A.J.;da Costa, D.R.;Frederico, T.;Hadizadeh, M.R.

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在三体相对论框架下,研究了零程相互作用极限下具有Kamada和Glöcke增强势的基态和激发态的三玻色子束束态质量函数和波函数。我们采用山口和高斯形式因子的非相对论短程可分势,并在保持两体束缚不变的同时,让形式因子的动量标度变得很大,从而将它们推向零程极限。结果表明,三玻色子相对论质量和波函数在零程极限附近与模型无关,避免了Thomas崩塌,而非相对论极限保持了Efimov效应。此外,零程极限的稳定性是随着三玻色子系统中虚对质心动量的增加而使增强势减小的结果。最后,我们将目前的结果与光波前计算和欧几里得计算进行了比较。
We study the three-boson bound-state mass and wave functions for ground and excited states within the three-body relativistic framework with Kamada and Glöcke boosted potentials in the limit of a zero-range interaction. We adopt a nonrelativistic short-range separable potential, with Yamaguchi and Gaussian form factors, and drive them towards the zero-range limit by letting the form factors' momentum scales go to large values while keeping the two-body binding fixed. We show that the three-boson relativistic masses and wave functions are model-independent towards the zero-range limit, and the Thomas collapse is avoided, while the nonrelativistic limit kept the Efimov effect. Furthermore, the stability in the zero-range limit is a result of the reduction of boosted potential with the increase of the virtual pair center of mass momentum within the three-boson system. Finally, we compare the present results with Light-Front and Euclidean calculations.
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