Bibliografías temáticas / Skyrme functionals

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Literatura académica sobre el tema "Skyrme functionals"

Autor: Grafiati
Publicado: 25 de enero de 2025
Última modificación: 31 de julio de 2025

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Artículos de revistas sobre el tema "Skyrme functionals"

1

Selva, Giovanni, Xavier Roca-Maza, and Gianluca Colò. "Isospin Symmetry Breaking Effects on the Mass-Radius Relation of a Neutron Star." Symmetry 13, no. 1 (2021): 144. http://dx.doi.org/10.3390/sym13010144.

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Isospin symmetry breaking effects on the mass-radius relation of a cold, non-accreting neutron star are studied on the basis of two Skyrme Energy Density Functionals (EDFs). One functional contains isospin symmetry breaking terms other than those typically included in Skyrme EDFs while its counterpart is of standard form. Both functionals are based on the same fitting protocol except for the observables and pseudo-observables sensitive to the isospin symmetry breaking channel. The quality of those functionals is similar in the description of terrestrial observables but choosing either of them
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KOSHKIN, SERGIY. "GAUGE THEORY OF FADDEEV–SKYRME FUNCTIONALS." Communications in Contemporary Mathematics 12, no. 05 (2010): 871–908. http://dx.doi.org/10.1142/s0219199710004020.

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We study geometric variational problems for a class of nonlinear σ-models in quantum field theory. Mathematically, one needs to minimize an energy functional on homotopy classes of maps from closed 3-manifolds into compact homogeneous spaces G/H. The minimizers are known as Hopfions and exhibit localized knot-like structure. Our main results include proving existence of Hopfions as finite energy Sobolev maps in each (generalized) homotopy class when the target space is a symmetric space. For more general spaces, we obtain a weaker result on existence of minimizers in each 2-homotopy class.Our
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Colò, G., Z. Z. Li, and Y. F. Niu. "Quasiparticle-vibration Coupling on Top of Skyrme Functionals: A Sensitivity Study." Acta Physica Polonica B Proceedings Supplement 18, no. 2 (2025): 1. https://doi.org/10.5506/aphyspolbsupp.18.2-a8.

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Our recent fully self-consistent model, that starts from QRPA on top of Skyrme–Hartree–Fock–Bogoliubov (SHFB) and includes the coupling between quasiparticles and vibrations, is discussed. We highlight the significant improvement of the results with respect to simple QRPA, and we focus on the sensitivity to the choice of a specific Skyrme functional. Abstract Published by the Jagiellonian University 2025 authors
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Pastore, A., D. Davesne, K. Bennaceur, J. Meyer, and V. Hellemans. "Fitting Skyrme functionals using linear response theory." Physica Scripta T154 (May 1, 2013): 014014. http://dx.doi.org/10.1088/0031-8949/2013/t154/014014.

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Pudliner, B. S., A. Smerzi, J. Carlson, V. R. Pandharipande, Steven C. Pieper, and D. G. Ravenhall. "Neutron Drops and Skyrme Energy-Density Functionals." Physical Review Letters 76, no. 14 (1996): 2416–19. http://dx.doi.org/10.1103/physrevlett.76.2416.

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PAAR, N., T. MARKETIN, D. VRETENAR, et al. "NUCLEAR EXCITATIONS AND WEAK INTERACTION RATES AT FINITE TEMPERATURE." Modern Physics Letters A 25, no. 21n23 (2010): 1767–70. http://dx.doi.org/10.1142/s0217732310000289.

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Self-consistent theory frameworks have been introduced for description of excitations in nuclei at finite temperature, based on energy density functionals formulated using i) relativistic mean field Lagrangian with density dependent meson-nucleon vertex functions, and ii) Skyrme-type functionals. Finite temperature random phase approximation (FTRPA) has been employed in description of multipole excitations and charge-exchange modes. It is shown that in the temperature range T = 1–2 MeV additional transition strength appears at low energies due to thermal unblocking of single-particle orbitals
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COLÒ, G. "THE SYMMETRY ENERGY AND OTHER OPEN QUESTIONS CONCERNING EFFECTIVE FUNCTIONALS." International Journal of Modern Physics E 18, no. 04 (2009): 1008–13. http://dx.doi.org/10.1142/s0218301309013166.

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The nuclear structure community is striving to determine a nuclear energy functional which is as universal and as accurate as possible. When a functional is determined by fitting free parameters, the constraints on these parameters coming from excited states (like the well-known giant resonances) are not, as a rule, imposed. This work shows that at least three constraints could be imposed on Skyrme functionals, by explaining the physical background and discussing their relevance.
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Zurek, L. "Towards Nuclear Energy Density Functionals from First Principles." Acta Physica Polonica B Proceedings Supplement 18, no. 2 (2025): 1. https://doi.org/10.5506/aphyspolbsupp.18.2-a5.

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We discuss the GUDE functionals which consist of pion exchanges derived from chiral effective field theory and a Skyrme-like part. Certain pion terms lead to significant improvements in the description of ground-state energies, indicating they might be useful ingredients for true <span class="it">ab initio</span> energy density functionals. In addition, we present estimates of the statistical parameter uncertainties of the GUDE functionals. Abstract Published by the Jagiellonian University 2025 authors
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9

BALLY, B., B. AVEZ, M. BENDER, and P. H. HEENEN. "SYMMETRY RESTORATION FOR ODD-MASS NUCLEI WITH A SKYRME ENERGY DENSITY FUNCTIONAL." International Journal of Modern Physics E 21, no. 05 (2012): 1250026. http://dx.doi.org/10.1142/s0218301312500267.

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In these proceedings, we report first results for particle-number and angular-momentum projection of self-consistently blocked triaxial one-quasiparticle HFB states for the description of odd-A nuclei in the context of regularized multi-reference energy density functionals, using the entire model space of occupied single-particle states. The SIII parametrization of the Skyrme energy functional and a volume-type pairing interaction are used.
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Brenna, Marco, Gianluca Colò, and Pier Francesco Bortignon. "Gamma decay of giant resonances by using Skyrme functionals." Journal of Physics: Conference Series 336 (December 28, 2011): 012010. http://dx.doi.org/10.1088/1742-6596/336/1/012010.

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Tesis sobre el tema "Skyrme functionals"

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Duan, Mingya. "Study of neutron-star and supernova matter with Skyrme functionals : response functions and new parametrizations." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP171.

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Les étoiles à neutrons sont des objets denses qui sont produits dans des explosions de supernova à effondrement de coeur. Pour la modélisation de la supernova et du refroidissement de l'étoile à neutrons, les taux d'absorption, d'émission et de diffusion des neutrinos jouent un rôle crucial. Dans une grande partie de ces systèmes astrophysiques, les noyaux sont complètement dissous. Dans ce cas, les taux de neutrinos peuvent être directement liés aux fonctions de réponse de la matière nucléaire, calculées aux densités, asymétries et températures correspondantes. Cette thèse développe d'abord l
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2

Bhattacharyya, Anirban. "Application of effective field theory to density functional theory for finite systems." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1124116299.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xv, 210 p.; also includes graphics (some col.). Includes bibliographical references (p. 205-210). Available online via OhioLINK's ETD Center
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Sadoudi, Jeremy. "Constraints on the nuclear energy density functional and new possible analytical forms." Thesis, Paris 11, 2011. http://www.theses.fr/2011PA112151/document.

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La méthode dite de la fonctionnelle de la densité d'énergie (EDF) est l'outil théorique de référence pour l'étude systématique de la structure des noyaux atomiques de masse A&gt;20. La méthode EDF est formulée en deux étapes successives consistant à briser puis à restaurer les symétries du Hamiltonien nucléaire sous-jacent. La technique de restauration des symétries n'est cependant rigoureusement formulée que si la fonctionnelle d'énergie dérive explicitement d'une interaction effective, i.e. d'un pseudo-potentiel, ce qui constitue un cas particulier de la méthode EDF plus générale. Ainsi, et
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Sadoudi, Jérémy. "Constraints on the nuclear energy density functional and new possible analytical forms." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00653740.

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The theoretical tool of choice for the microscopic description of all medium- and heavy-mass nuclei is the Energy Density Functional (EDF) method. Such a method relies on the concept of spontaneous symmetry breaking and restoration. In that sense, it is intrinsically a two-step approach. However, the symmetry restoration procedure is only well-defined in the particular case where the energy functional derives from a pseudo-potential. Thereby and as it has been recently shown, existing parameterizations of the energy functional provides unphysical results. Such a problem as well as the lack of
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Becker, Pierre. "Développement d'une interaction nucléaire effective de nouvelle génération." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1153/document.

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Si le noyau atomique peut sembler aujourd'hui un système bien connu, sa description microscopique théorique comporte toujours des lacunes : décrire la structure nucléaire des noyaux tout le long de la charte des noyaux de manière satisfaisante par une seule interaction s'avère encore compliqué aujourd'hui.Les interactions les plus performantes et les plus utilisées pour atteindre ce but sont les interactions effectives. On peut généralement classer celles-ci en deux catégories: celles de portée finie et celles de portée nulle. L'interaction de Skyrme, dont il est principalement question dans c
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6

Moghrabi, Kassem. "Beyond-mean-field corrections and effective interactions in the nuclear many-body problem." Phd thesis, Paris 11, 2013. http://tel.archives-ouvertes.fr/tel-00908607.

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Mean-field approaches successfully reproduce nuclear bulk properties like masses and radii within the Energy Density Functional (EDF) framework. However, complex correlations are missing in mean-field models and several observables related to single-particle and collective nuclear properties cannot be predicted accurately. The necessity to provide a precise description of the available data as well as reliable predictions in the exotic regions of the nuclear chart motivates the use of more sophisticated beyond-mean-field models. Correlations and higher-order corrections (beyond the leading mea
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7

Repko, Anton. "Gigantické rezonance v atomových jádrech." Master's thesis, 2011. http://www.nusl.cz/ntk/nusl-300468.

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Skyrme functional is commonly used for the description of ground-state and dynamical properties of atomic nuclei. To describe the dynamical properties in the microscopic self-consistent way, we employed Separable Random Phase Approximation (SRPA) based on Skyrme functional. This work describes theory of Skyrme Hartree-Fock and SRPA and presents numerical calculation of E1 and M1 giant resonances in spherical nuclei Ca-40 - Fe-56. There is some evidence for non-zero ground-state deformation of the nucleus Fe-56, so it is treated also with such assumption. The results obtained for various parame
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Repko, Anton. "Teoretický popis kolektivních excitací jader." Doctoral thesis, 2016. http://www.nusl.cz/ntk/nusl-347499.

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Density functional theory is a preferred microscopic method for calculation of nuclear properties over the whole nuclear chart. Besides ground-state properties, which are calculated by Hartree-Fock theory, nuclear excitations can be described by means of Random Phase Approximation (RPA). The main objective of the present work is to give the RPA formalism for spherically symmetric nuclei, using the techniques of angular-momentum coupling. Various auxiliary topics, such as Hartree-Fock theory, Coulomb integral, center-of-mass corrections and pairing, are treated as well. RPA method is derived al
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9

Afonso, Joana Martins de Carvalho. "Skyr yogurts : the future of this emerging market." Master's thesis, 2018. http://hdl.handle.net/10400.14/26242.

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The aim of this dissertation is to analyse the possibilities of improving the Skyr yogurts market, by investigating the attitudes towards its consumption and consumers’ perceptions of this dairy. Therefore, the reasons why people are changing their concerns for their lifestyle, towards a healthier way of living, focusing mainly on their diets, are evaluated. The Functional Food category is, as such, used as a starting point, to assess the areas of study, namely: attitudes, acceptance and attributes. This study’s methodology consists of qualitative and quantitative research, and data was
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Libros sobre el tema "Skyrme functionals"

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Heldal, Rogardt. Functional Programming, Glasgow 1991: Proceedings of the 1991 Glasgow Workshop on Functional Programming, Portree, Isle of Skye, 12-14 August 1991. Springer London, 1992.

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Glasgow Workshop on Functional Programming. (1991 Portree, Scotland). Functional programming, Glasgow 1991: Proceedings of the 1991 Glasgow Workshop on Functional Programming, Portree, Isle of Skye, 12-14 August 1991. Springer-Verlag, 1992.

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Portree, Scotland) Glasgow Workshop on Functional Programming (1991, Carsten Kehler Holst, and Rogardt Heldal. Functional Programming, Glasgow 1991: Proceedings of the 1991 Glasgow Workshop on Functional Programming, Portree, Isle of Skye, 12-14 August 1991 (Workshops in Computing). Springer, 1992.

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Capítulos de libros sobre el tema "Skyrme functionals"

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Makhankov, Vladmir G., Yurii P. Rybakov, and Valerii I. Sanyuk. "Absolute Minimum of the Energy Functional." In The Skyrme Model. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-84670-0_6.

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Bucholtz, Ianis, and Laura Sūna. "‘I Am One of Them’: Exploring the Communication of Identity of Latvian Migrants on Social Networking Sites." In IMISCOE Research Series. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-12092-4_11.

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Abstract This chapter analyses how ethnic transnational identities are manifested and negotiated on the social networking sites used by Latvian migrants. Although migrants as well as other people use various personal media, including Skype, chat apps such as WhatsApp and telephones, social networking sites stand out with the diversity of functions in migrant communication. This includes one-to-one exchanges, group communication and the ability to locate and connect with users who may or may not be familiar offline. We argue that social networking sites and particularly thematic groups on these
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Actas de conferencias sobre el tema "Skyrme functionals"

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Duhan, Sukhvinder, Manjeet Singh Gautam, Hitender Khatri, and Rishipal Chahal. "Structural study of stable (4He) and Halo (6He, 8He) helium isotopes using Skyrme pairing force-SKP modified SKM* and SLy4 functionals." In ADVANCED MATERIALS AND RADIATION PHYSICS (AMRP-2020): 5th National e-Conference on Advanced Materials and Radiation Physics. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0052782.

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NAKATSUKASA, T., K. YABANA, and T. INAKURA. "LINEAR RESPONSE CALCULATIONS WITH THE TIME-DEPENDENT SKYRME DENSITY FUNCTIONAL." In Proceedings of the International Symposium on the ISPUN07. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812776150_0030.

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LI, JUN, GIANLUCA COLÒ, and JIE MENG. "MICROSCOPIC CALCULATIONS BASED ON A SKYRME FUNCTIONAL PLUS THE PAIRING CONTRIBUTION." In Proceedings of the International Symposium on the ISPUN07. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812776150_0071.

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YOSHIDA, K. "SKYRME ENERGY-DENSITY FUNCTIONAL APPROACH TO COLLECTIVE MODES OF EXCITATION IN EXOTIC NUCLEI." In Proceedings of the Fifth International Conference on ICFN5. WORLD SCIENTIFIC, 2013. http://dx.doi.org/10.1142/9789814525435_0042.

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Hellemans, V., M. Bender, P. H. Heenen, et al. "Probing Time-Odd and Tensor Terms of The Skyrme Functional in Superdeformed Bands." In NUCLEAR STRUCTURE AND DYNAMICS ’09: Proceedings of the International Conference. AIP, 2009. http://dx.doi.org/10.1063/1.3232095.

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Roca-Maza, X., G. Colò, Li-Gang Cao, and H. Sagawa. "A new Skyrme energy density functional for a better description of spin-isospin resonances." In Nuclear Structure and Dynamics ’15. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4932265.

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KVASIL, J., W. KLEINIG, V. O. NESTERENKO, P. G. REINHARD, and P. VESELY. "TIME-DEPENDENT DENSITY FUNCTIONAL THEORY WITH SKYRME FORCES: DESCRIPTION OF GIANT RESONANCES IN DEFORMED NUCLEI." In Proceedings of the 9th International Spring Seminar on Nuclear Physics. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812779038_0048.

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Hellemans, V., M. Bender, P. H. Heenen, et al. "Probing the effects of the time-odd terms in the Skyrme functional in superdeformed bands." In CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS: Proceedings of the 13th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics. AIP, 2009. http://dx.doi.org/10.1063/1.3087074.

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Yamagami, Masayuki, and Kenich Matsuyanagi. "Rotational Effect on Octupole Vibrations in Superdeformed Nuclei Studied by Cranked RPA Calculation with Skyrme Density Functional." In Proceedings of the Conference on Advances in Radioactive Isotope Science (ARIS2014). Journal of the Physical Society of Japan, 2015. http://dx.doi.org/10.7566/jpscp.6.030051.

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