Signatures of phase transitions in nuclei at finite excitation energies

dc.contributor.authorAlhassid, Yoram
dc.contributor.authorÖzen, Cem
dc.contributor.authorNakada, Hitoshi
dc.date.accessioned2019-06-27T08:04:18Z
dc.date.available2019-06-27T08:04:18Z
dc.date.issued2012
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Biyoinformatik ve Genetik Bölümüen_US
dc.description.abstractThe mean-field approximation predicts pairing and shape phase transitions in nuclei as a function of temperature or excitation energy. However in the finite nucleus the singularities of these phase transitions are smoothed out by quantal and thermal fluctuations. An interesting question is whether signatures of these transitions survive despite the large fluctuations. The shell model Monte Carlo (SMMC) approach enables us to calculate the statistical properties of nuclei beyond the mean-field approximation in model spaces that are many orders of magnitude larger than spaces that can be treated by conventional diagonalization methods. We have extended the SMMC method to heavy nuclei and used it to study the transition from vibrational (spherical) to rotational (deformed) nuclei in families of rare-earth isotopes. We have calculated collective enhancement factors of level densities as a function of excitation energy and found that the decay of the vibrational and rotational enhancements is well correlated with the pairing and shape phase transitions respectively.en_US]
dc.identifier.citation0
dc.identifier.doi10.1063/1.4759421en_US
dc.identifier.endpage393
dc.identifier.isbn9780735411005
dc.identifier.issn0094-243Xen_US
dc.identifier.issn0094-243X
dc.identifier.scopus2-s2.0-84874140422en_US
dc.identifier.scopusqualityN/A
dc.identifier.startpage386en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12469/922
dc.identifier.urihttps://doi.org/10.1063/1.4759421
dc.identifier.volume1488en_US
dc.identifier.wosWOS:000310687200045en_US
dc.identifier.wosqualityN/A
dc.institutionauthorÖzen, Cemen_US
dc.language.isoenen_US
dc.publisherAmer Inst Physicsen_US
dc.relation.journalAIP Conference Proceedingsen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectPhase transitionsen_US
dc.subjectNuclear shell modelen_US
dc.subjectQuantum Monte Carlo methodsen_US
dc.titleSignatures of phase transitions in nuclei at finite excitation energiesen_US
dc.typeConference Objecten_US
dspace.entity.typePublication

Files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Signatures of phase transitions in nuclei at finite excitation energies.pdf
Size:
655.41 KB
Format:
Adobe Portable Document Format
Description: