Existence of an exotic torus configuration in high-spin excited states of Ca40

Ichikawa T, Maruhn JA, Itagaki N, Matsuyanagi K, Reinhard PG, Ohkubo S (2012)

Publication Type: Journal article

Publication year: 2012

Journal

Physical Review Letters American Physical Society

Book Volume: 109

Article Number: 232503

Journal Issue: 23

DOI: 10.1103/PhysRevLett.109.232503

Abstract

We investigate the possibility of the existence of the exotic torus configuration in the high-spin excited states of Ca40. We here consider the spin alignments about the symmetry axis. To this end, we use a three-dimensional cranked Skyrme Hartree-Fock method and search for stable single-particle configurations. We find one stable state with the torus configuration at the total angular momentum J=60 and an excitation energy of about 170MeV in all calculations using various Skyrme interactions. The total angular momentum J=60 consists of aligned 12 nucleons with the orbital angular momenta Λ=+4, +5, and +6 for spin-up or -down neutrons and protons. The obtained results strongly suggest that a macroscopic amount of circulating current breaking the time-reversal symmetry emerges in the high-spin excited state of Ca40. © 2012 American Physical Society.

Authors with CRIS profile

Paul-Gerhard Reinhard Naturwissenschaftliche Fakultät

Involved external institutions

Kyoto University / 京都大学 Kyōto daigaku JP Japan (JP) Goethe-Universität Frankfurt am Main DE Germany (DE) Kōchi University / 高知大学 JP Japan (JP)

How to cite

APA:

Ichikawa, T., Maruhn, J.A., Itagaki, N., Matsuyanagi, K., Reinhard, P.-G., & Ohkubo, S. (2012). Existence of an exotic torus configuration in high-spin excited states of Ca40. Physical Review Letters, 109(23). https://doi.org/10.1103/PhysRevLett.109.232503

MLA:

Ichikawa, T., et al. "Existence of an exotic torus configuration in high-spin excited states of Ca40." Physical Review Letters 109.23 (2012).

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