Generalized time-dependent generator coordinate method for small- and large-amplitude collective motion

Znanstveni rad - Izvorni znanstveni rad

• Autor: B. Li
• Autor: Dario Vretenar
• Autor: Tamara Nikšić
• Autor: P. W. Zhao
• Autor: J. Meng
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

An implementation of the generalized time-dependent generator coordinated method (TD-GCM) is developed, that can be applied to the dynamics of small- and large-amplitude collective motion of atomic nuclei. Both the generator states and weight functions of the GCM correlated wave function depend on time. The initial generator states are obtained as solutions of deformation-constrained self-consistent mean-field equations, and are evolved in time by the standard mean-field equations of nuclear density functional theory (TD-DFT). The TD-DFT trajectories are used as a generally nonorthogonal and overcomplete basis in which the TD-GCM wave function is expanded. The weights, expressed in terms of a collective wave function, obey a TD-GCM (integral) equation. In this explorative paper, the generalized TD-GCM is applied to the excitation energies and spreading width of giant resonances, and to the dynamics of induced fission. The necessity of including pairing correlations in the basis of TD-DFT trajectories is demonstrated in the latter example.

• Ključne riječi (engleski): generalized time-dependent generator coordinated method; TD-GCM
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Physical Review C
• Brojčani podaci: vol. 108, br. 1, 014321
• p-ISSN: 2469-9985
• e-ISSN: 2469-9993
• DOI: https://doi.org/10.1103/PhysRevC.108.014321
• URN:NBN: urn:nbn:hr:217:017448
• Datum objave publikacije: 2023
• Projekt: Šifra: KK.01.1.1.01.0004; Naziv (hrvatski): Provedba vrhunskih istraživanja u sklopu Znanstvenog centra izvrsnosti za kvantne i kompleksne sustave te reprezentacije Liejevih algebri; Naziv (engleski): Implementation of top research within the Scientific Center of Excellence for Quantum and Complex Systems, and Representations of Lie Algebras; Kratica: QuantiXLie; Voditelj: Hrvoje Buljan; Pravna nadležnost: eu; Financijer: Europska komisija; Linija financiranja: European Regional Development Fund
• Projekt: Šifra: IP-2018-01-5987; Naziv (hrvatski): Kvantificiranje neodređenosti u formalizmu nuklearnih energijskih funkcionala gustoće; Naziv (engleski): Uncertainty Quantification within the nuclear energy density functional framework; Kratica: NucEDF; Voditelj: Tamara Nikšić; Pravna nadležnost: Hrvatska; Financijer: Hrvatska zaklada za znanost; Linija financiranja: Research Projects
• URL dokumenta: https://link.aps.org/doi/10.1103/PhysRevC.108.014321
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: © 2023 American Physical Society. Received 26 April 2023. Revised 28 June 2023. Accepted 11 July 2023. Published 21 July 2023.
• Datum i vrijeme pohrane: 2024-07-29 10:19:13