Naslov
Cluster structures in C12 from global energy density functionals

Autori
Marević, Petar ; Ebran, J.-P. ; Khan, E. ; Nikšić, Tamara ; Vretenar, Dario

Izvornik
Physical review. C (2469-9985) 99 (2019), 3; 034317, 9

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
cluster model ; nuclear density functional theory

Sažetak
Spectroscopic properties of low-lying states and cluster structures in 12C are analyzed in a beyond mean-field framework based on global energy density functionals (EDFs). To build symmetry-conserving collective states, axially symmetric and reflection- asymmetric solutions of the relativistic Hartree- Bogoliubov equations are first projected onto good values of angular momentum, particle number, and parity. Configuration mixing is implemented using the generator coordinate method formalism. It is shown that such a global microscopic approach, based on a relativistic EDF, can account for the main spectroscopic features of 12C, including the ground- state and linear-chain bands as well as, to a certain approximation, the excitation energy of the Hoyle state. The calculated form factors reproduce reasonably well the available experimental values, and display an accuracy comparable to that of dedicated microscopic cluster models.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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