Spatial asymmetry of neutron pairing:A distance-resolved study of 46Ti
Abstract
Distance integration can conceal the spatial organization of neutron pairing in a reflection-asymmetric intrinsic configuration. We resolve the spin-singlet pairing tensor by relative distance and signed pair-center position along a prescribed α+42Ca-like path in 46Ti, using density-constrained Skyrme Hartree--Fock plus Bardeen--Cooper--Schrieffer calculations. Compact and extended components have oppositely signed shifts relative to the normal-density product conditioned on the same distance interval. At a reference center separation of 6 fm, the distance-integrated difference is 0.010, whereas the compact--extended contrast is 0.439. For the baseline surface-pairing prescription, this contrast increases between reference center separations of 6 and 7 fm while the extended anomalous weight decreases and the average neutron gap increases. Endpoint partitions locate an excess of extended neutron weight with both nucleons on the core side. An interference-retaining analysis in the stored canonical representation links the anomalous redistribution to f7/2-weighted branches gaining core-side support with distinct amplitude responses. Changes in the normal-density reference contribute separately to the growing contrast. The conditional neutron pattern persists under the tested functional and pairing variations. Distance-conditioned distributions thus reveal intrinsic pairing structure hidden by scalar measures and distance integration.
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BibTeX
@misc{xue2026spatial,
title = {{Spatial asymmetry of neutron pairing:A distance-resolved study of $^46\mathrmTi$}},
author = {Huai-Tong Xue and Hua-Ming Dai and Wan Chang and Zi-Le Zhang and Shuai-Wei Wang},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.29154},
eprint = {2610.29154},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.29154},
}
RIS
TY - UNPB
TI - Spatial asymmetry of neutron pairing:A distance-resolved study of ^46Ti
AU - Huai-Tong Xue
AU - Hua-Ming Dai
AU - Wan Chang
AU - Zi-Le Zhang
AU - Shuai-Wei Wang
PY - 2026
DA - 2026/10/21
PB - arXiv
DO - 10.48550/arxiv.2610.29154
UR - https://arxiv.org/abs/2610.29154
AB - Distance integration can conceal the spatial organization of neutron pairing in a reflection-asymmetric intrinsic configuration. We resolve the spin-singlet pairing tensor by relative distance and signed pair-center position along a prescribed α+^42Ca-like path in ^46Ti, using density-constrained Skyrme Hartree--Fock plus Bardeen--Cooper--Schrieffer calculations. Compact and extended components have oppositely signed shifts relative to the normal-density product conditioned on the same distance interval. At a reference center separation of 6 fm, the distance-integrated difference is 0.010, whereas the compact--extended contrast is 0.439. For the baseline surface-pairing prescription, this contrast increases between reference center separations of 6 and 7 fm while the extended anomalous weight decreases and the average neutron gap increases. Endpoint partitions locate an excess of extended neutron weight with both nucleons on the core side. An interference-retaining analysis in the stored canonical representation links the anomalous redistribution to f_7/2-weighted branches gaining core-side support with distinct amplitude responses. Changes in the normal-density reference contribute separately to the growing contrast. The conditional neutron pattern persists under the tested functional and pairing variations. Distance-conditioned distributions thus reveal intrinsic pairing structure hidden by scalar measures and distance integration.
ER -