Global fitting of pairing density functional; the isoscalar-density dependence revisited Masayuki YAMAGAMI (University of Aizu) Motivation Construction.

Slides:

Advertisements

Similar presentations

Valence shell excitations in even-even spherical nuclei within microscopic model Ch. Stoyanov Institute for Nuclear Research and Nuclear Energy Sofia,

Advertisements

1 Di-Neutron Correlation in Soft Octupole Excitations of Medium-Mass Nuclei near Drip-Line Y. Serizawa and M. Matsuo Niigata Univ.

Isospin dependence and effective forces of the Relativistic Mean Field Model Georgios A. Lalazissis Aristotle University of Thessaloniki, Greece Georgios.

ORNL, 6 December 2007 Large-Scale Mass Table Calculations M. Stoitsov J. Dobaczewski, W. Nazarewicz, J. Pei, N. Schunck Department of Physics and Astronomy,

12 June, 2006Istanbul, part I1 Mean Field Methods for Nuclear Structure Part 1: Ground State Properties: Hartree-Fock and Hartree-Fock- Bogoliubov Approaches.

Lawrence Livermore National Laboratory UCRL-XXXX Lawrence Livermore National Laboratory, P. O. Box 808, Livermore, CA This work performed under.

Mean-field calculation based on proton-neutron mixed energy density functionals Koichi Sato (RIKEN Nishina Center) Collaborators: Jacek Dobaczewski (Univ.

Towards a Universal Energy Density Functional Towards a Universal Energy Density Functional Study of Odd-Mass Nuclei in EDF Theory N. Schunck University.

Continuum QRPA calculation with the Skyrme effective force Niigata University Kazuhito Mizuyama Masayuki Matsuo & Yasuyoshi Serizawa.

Forces for extensions of mean-field PhD Thesis Marlène Assié Denis Lacroix (LPC Caen), Jean-Antoine Scarpaci (IPN Orsay)  Extensions of mean-field ? 

9/28/ :01 (00) PAIRING PROPERTIES OF SUPERHEAVY NUCLEI A. Staszczak, J. Dobaczewski and W. Nazarewicz (KFT UMCS) (IFT UW) (ORNL & UT)

I. Bentley and S. Frauendorf Department of Physics University of Notre Dame, USA Calculation of the Wigner Term in the Binding Energies by Diagonalization.

Fission Barriers in Skyrme-HFB Approach LORW group 14 th Nuclear Physics Workshop "Marie & Pierre Curie" Kazimierz 2007.

The physics of nuclear collective states: old questions and new trends G. Colò Congresso del Dipartimento di Fisica Highlights in Physics 2005 October.

:12 (00) Below-barrier paths: multimodal fission & doughnut nuclei A. Staszczak (UMCS, Lublin) FIDIPRO-UNEDF collaboration meeting on nuclear.

Systematics of the First 2 + Excitation in Spherical Nuclei with Skyrme-QRPA J. Terasaki Univ. North Carolina at Chapel Hill 1.Introduction 2.Procedure.

Relative kinetic energy correction to fission barriers 1. Motivation 2. Results for A= systems 3. A cluster model perspective 4. Prescription based.

Terminating states as a unique laboratory for testing nuclear energy density functional Maciej Zalewski, UW under supervision of W. Satuła Kazimierz Dolny,

SH nuclei – structure, limits of stability & high-K ground-states/isomers 1.Equilibrium shapes 2.Fission barriers 3.Q alpha of Z= ( with odd and.

XV Nuclear Physics Workshop Kazimierz 2008: "75 years of nuclear fission" Sept. 25, ISTANBUL-06 Kazimierz Dolny, Sept. 25, 2008 Technical.

M. Girod, F.Chappert, CEA Bruyères-le-Châtel Neutron Matter and Binding Energies with a New Gogny Force.

Nuclear and Radiation Physics, BAU, 1 st Semester, (Saed Dababneh). 1 Nuclear Binding Energy B tot (A,Z) = [ Zm H + Nm n - m(A,Z) ] c 2 B  m.

Structure of Be hyper-isotopes Masahiro ISAKA (RIKEN) Collaborators: H. Homma and M. Kimura (Hokkaido University)

Heat Capacities of 56 Fe and 57 Fe Emel Algin Eskisehir Osmangazi University Workshop on Level Density and Gamma Strength in Continuum May 21-24, 2007.

Structure of Warm Nuclei Sven Åberg, Lund University, Sweden Fysikersamfundet - Kärnfysiksektionen Svenskt Kärnfysikmöte XXVIII, november 2008, KTH-AlbaNova.

Tomohiro Oishi 1,2, Markus Kortelainen 2,1, Nobuo Hinohara 3,4 1 Helsinki Institute of Phys., Univ. of Helsinki 2 Dept. of Phys., Univ. of Jyvaskyla 3.

Microscopic particle-vibration coupling models G. Colò.

1 New formulation of the Interacting Boson Model and the structure of exotic nuclei 10 th International Spring Seminar on Nuclear Physics Vietri sul Mare,

Effects of self-consistence violations in HF based RPA calculations for giant resonances Shalom Shlomo Texas A&M University.

Nuclear Structure and dynamics within the Energy Density Functional theory Denis Lacroix IPN Orsay Coll: G. Scamps, D. Gambacurta, G. Hupin M. Bender and.

1 New horizons for MCAS: heavier masses and α-particle scattering Juris P. Svenne, University of Manitoba, and collaborators CAP 15/6/2015.

Nuclear structure theory of the heaviest nuclei: achievements and challenges. Anatoli Afanasjev Mississippi State University 1.Introduction 2.Actinides.

Systematic study of isovector dipole mode up to A=50 KEK 研究会「原子核・ハドロン物理 : 横断研究会」 KEK, 2007 年 11 月 19 日 -21 日稲倉恒法中務孝矢花一浩 ( 筑波大学 ) ( 理研 ) ( 筑波大学 )

Spin-orbit potential in 6 He studied with polarized proton target 2007/6/5, INPC2007 Satoshi Sakaguchi Center for Nuclear Study, Univ. of Tokyo.

Probing the isospin dependence of nucleon effective mass with heavy-ion reactions Momentum dependence of mean field/ –Origins and expectations for the.

Isospin mixing and parity- violating electron scattering O. Moreno, P. Sarriguren, E. Moya de Guerra and J. M. Udías (IEM-CSIC Madrid and UCM Madrid) T.

KITPC, Jun 14th, 2012 Spin-Isospin excitations as quantitative constraint for the Skyrme tensor force Chunlin Bai Department of Physics, Sichuan University.

Limits of applicability of the currently available EoS at high density matter in neutron stars and core-collapse supernovae: Discussion comments Workshop.

M. Matsuo, PRC73(’06) Matter Calc. Two-particle density.

Nuclear Collective Excitation in a Femi-Liquid Model Bao-Xi SUN Beijing University of Technology KITPC, Beijing.

Spectroscopy of Odd-Mass Nuclei in Energy Density Functional Theory Impact of Terascale Computing N. Schunck University of Tennessee, 401 Nielsen Physics,

Anomalous two-neutron transfer in neutron-rich Ni and Sn isotopes studied with continuum QRPA H.Shimoyama, M.Matsuo Niigata University 1 Dynamics and Correlations.

The correlations between symmetry energy and dipole states G. Colò University of Aizu-JUSTIPEN-EFES Symposium on “Cutting-edge Physics of Unstable Nuclei”

NEUTRON SKIN AND GIANT RESONANCES Shalom Shlomo Cyclotron Institute Texas A&M University.

1 Technology to calculate observables Global properties Spectroscopy DFT Solvers Functional form Functional optimization Estimation of theoretical errors.

21 January 2010ITP Beijing1 Neutron star cooling: a challenge to the nuclear mean field Nguyen Van Giai IPN, Université Paris-Sud, Orsay 2.

Lawrence Livermore National Laboratory Effective interactions for reaction calculations Jutta Escher, F.S. Dietrich, D. Gogny, G.P.A. Nobre, I.J. Thompson.

Application of the Adiabatic Self-Consistent Collective Coordinate (ASCC) Method to Shape Coexistence/ Mixing Phenomena Application of the Adiabatic Self-Consistent.

Quantum Phase Transitions (QPT) in Finite Nuclei R. F. Casten June 21, 2010, CERN/ISOLDE.

Shell structure: ~ 1 MeV Quantum phase transitions: ~ 100s keV Collective effects: ~ 100s keV Interaction filters: ~ keV Binding energies, Separation.

Nuclear Isovector Equation-of-State (EOS) and Astrophysics Hermann Wolter Dep. f. Physik, LMU Topics: 1.Phase diagram of strongly interacting matter and.

Effect of tensor on halo and subshell structure in Ne, O and Mg isotopes Chen Qiu Supervisor: Prof. Xian-rong Zhou Xiamen University April. 13, 2012.

Some (more) High(ish)-Spin Nuclear Structure Paddy Regan Department of Physics Univesity of Surrey Guildford, UK Lecture 2 Low-energy.

Information content of a new observable Witold Nazarewicz University of Aizu-JUSTIPEN-EFES Symposium on "Cutting-Edge Physics of Unstable Nuclei” Aizu-Wakamatsu,

MICROSCOPIC CALCULATION OF SYMMETRY PROJECTED NUCLEAR LEVEL DENSITIES Kris Van Houcke Ghent University In collaboration with S. Rombouts, K. Heyde, Y.

Tailoring new interactions in the nuclear many-body problem for beyond- mean-field models Marcella Grasso Tribute to Daniel Gogny.

F. C HAPPERT N. P ILLET, M. G IROD AND J.-F. B ERGER CEA, DAM, DIF THE D2 GOGNY INTERACTION F. C HAPPERT ET AL., P HYS. R EV. C 91, (2015)

Nuclear density functional theory with a semi-contact 3-body interaction Denis Lacroix IPN Orsay Outline Infinite matter Results Energy density function.

Time dependent GCM+GOA method applied to the fission process ESNT janvier / 316 H. Goutte, J.-F. Berger, D. Gogny CEA/DAM Ile de France.

Otranto 2007 P.F. Bortignon. Nucleons are coupled to phonons, mainly density vibrations (2 +,3 - ). In other words, the nuclear mean.

Congresso del Dipartimento di Fisica Highlights in Physics –14 October 2005, Dipartimento di Fisica, Università di Milano Contribution to nuclear.

Global nuclear structure aspects of tensor interaction Wojciech Satuła in collaboration with J.Dobaczewski, P. Olbratowski, M.Rafalski, T.R. Werner, R.A.

Few-Body Models of Light Nuclei The 8th APCTP-BLTP JINR Joint Workshop June 29 – July 4, 2014, Jeju, Korea S. N. Ershov.

The role of isospin symmetry in medium-mass N ~ Z nuclei

Structure and dynamics from the time-dependent Hartree-Fock model

Quantify correlations between the neutron skin and other quantities characterizing finite nuclei and infinite nuclear matter. How will additional data.

Superheavy nuclei: relativistic mean field outlook

Neutron Optical Model Potential &Symmetry Energy

Di-nucleon correlations and soft dipole excitations in exotic nuclei

Department of Physics, Sichuan University

Presentation transcript:

Global fitting of pairing density functional; the isoscalar-density dependence revisited Masayuki YAMAGAMI (University of Aizu) Motivation Construction of energy density functional for description of static and dynamical properties across the nuclear chart ⇒ Focusing on the pairing part (pairing density functional) a.Determination of  –dependence (Not new problem, but one of bottlenecks in DF calc.) b.Connection to drip-line regions

Our discussion Density dependence of pairing in nuclei NN scattering of 1 S 0  Many-body effects (e.g. phonon coupling) Standard density functional for pairing Our question: How to determine  0 ?? phonon coupling

Difficulty for  0 (  -dependence) Mass number A dependence of pairing J. Dobaczewski, W. Nazarewicz, Prog. Theor. Phys. Supp. 146, 70 (2002)  0 =1  0 =0 Neutron excess  =(N-Z)/A dependence Mass data: G. Audi et al., NPA729, 3 (2003)  n,exp : 3-point mass difference formula (same dependence for proton pairing)

Our model Pairing density functional with isoscalar & isovector density dep. Parameter optimization Theoretical framework Hartree-Fock-Bogoliubov theory ( Code developed by M.V. Stoitsov et al. ) Axially symmetric quadrupole deformation Skyrme forces (SLy4, SkM*, SkP, LNS) Energy cutoff = 60 MeV for pairing

Procedures for parameter optimization Data: G. Audi et al., NPA729, 3 (2003)  exp : 3-point mass difference formula

Extrapolation: Zone1 → Zone2, 3 - Skyrme SLy4 case -

Specific examples in Zone3 (outside fitting) Sn Pb

Verifying for typical Skyrme forces

Connection to drip-line region (low-  limit) (à la Bertsch & Esbensen)

Validity of assumption V 0 =V vac Comparison Procedure 1; V 0 =V vac + optimized (  0,  1,  2 ) Procedure 2; Optimized (  0,  1,  2, V 0 ) Results m*/m=0.7~0.8 ⇒ Good coincidence Procedure 1 ~ Procedure 2 m*/m=1.0 ⇒  tot of 1 & 2 are comparable, although the minimum positions are different. ☺ ☹

Conclusion a.Strong  –dep. (  0 ～ 0.8 ) for typical Skyrme forces b.  1 –tems should be included. c.Connection to drip-line regions, if m * /m=0.7~  -dependence of the pairing part of local energy density functional is studied. 2. All even-even nuclei with experimental data are analyzed by Skyrme-HFB.

☹ ☺

Definition of pairing gap

Pairing gap: A-dependence only

Survey of  1 (opt.) : pairing and effective mass  -dependence of effective masses 12 Skyrme parameters SKT6 (  =0.00), SKO’ (0.14), SKO (0.17), SLy4 (0.25), SLy5 (0.25), SKI1 (0.25), SKI4 (0.25), BSK17 (0.28), SKP (0.36), LNS (0.37), SGII (0.49), SkM* (0.53)