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*) for a period of 2008-13 Polish nuclear structure theory (NST) in numbers*) Brief overview of scientific activities Physics highlights - personal selection.

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Presentation on theme: "*) for a period of 2008-13 Polish nuclear structure theory (NST) in numbers*) Brief overview of scientific activities Physics highlights - personal selection."— Presentation transcript:

1 *) for a period of 2008-13 Polish nuclear structure theory (NST) in numbers*) Brief overview of scientific activities Physics highlights - personal selection Final remarks

2 Third Law of Progress in Theoretical Physics by Weinberg: “You may use any degrees of freedom you like to describe a physical system, but if you use the wrong ones, you’ll be sorry!” Third Law of Progress in Theoretical Physics by Weinberg: “You may use any degrees of freedom you like to describe a physical system, but if you use the wrong ones, you’ll be sorry!”

3 National Center for Nuclear Research (7) University of Warsaw (5); Warsaw University of Technology (2) Heavy Ion Laboratory (2) Maria Curie-Skłodowska University, Lublin (16) Jagiellonian University (5); Niewodniczanski Institute of Nuclear Physics (3) University of Zielona Góra (1) Silesian University of Technology, Katowice (1) Publications (2008-13) ~ 450(20) ( Nature, Science, 16PRL,PRC,PLB,…)

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5 Of particular interest are Nd elastic scattering and deuteron breakup reactions. These reactions allow to measure the so called analyzing powers (polarization observables) with high accuracy at different kinematic conditions. It allows to investigate in a systematic manner the momentum, spin and isospin dependence of 3Ns. Strategy: Solve Fadeeev equations with NN (blue bands) and NN+3NF use different NN and and 3NFs variants to asses theoretical uncertainities Look for systematic discrepancies Theory: Witala & Golak JU correct for relativistic effects look for new 3NFs

6 protons neutrons 82 50 28 50 82 20 8 2 2 8 126 Weak interaction studies in N=Z nuclei superallowed  -decay Temporal dependence of the fine structure constant studies in 229 Th EDM search in radium Specific nuclei offer new opportunities for precision tests of:  CP and P violation  Unitarity of the CKM matrix  Possible temporal dependence of the fine structure constant in 229 Th  searches neutron EDM

7 10 cases measured with accuracy ft ~0.1% 3 cases measured with accuracy ft ~0.3% ~2.4% 1.5% 0.3% - 1.5%  test of the CVC hypothesis (Conserved Vector Current) Towner & Hardy Phys. Rev. C77, 025501 (2008) weak eigenstates mass eigenstates CKM Cabibbo-Kobayashi -Maskawa  test of unitarity of the CKM matrix 0.9490(4) 0.0507(4) <0.0001 |V ud | 2 +|V us | 2 +|V ub | 2 =0.9997(6) |V ud | = 0.97418 + 0.00026 - adopted from J.Hardy’s, ENAM’08 presentation

8 superallowed 0 +  0 +  -decay |V ud | (a)  -decay mirror T=1/2 nuclei -decay 0.970 0.971 0.972 0.973 0.974 0.975 0.976 (b) (c) (d) 0.9925 0.9950 0.9975 1.0000 1.0025 |V ud | 2 +|V us | 2 +|V ub | 2 superallowed 0 +  0 +  -decay  -decay -decay mirror T=1/2 nuclei (a) (b) (c) (d) -0.5 0 0.5 10203040506070 A  C -  C [%] (SV) (HT) H. Liang, N. V. Giai, and J. Meng, Phys. Rev. C 79,064316 (2009). W. Satuła, J. Dobaczewski, W. Nazarewicz, M. Rafalski Phys. Rev. C 86, 054314(2012). I.S. Towner and J. C. Hardy, Phys. Rev. C 77, 025501(2008). (a) (b) (c,d) O. Naviliat-Cuncic and N. Severijns, Eur. Phys. J. A 42, 327 (2009); Phys. Rev. Lett. 102, 142302 (2009).

9 Large intrinsic Schiff moment in octupole deformed 225 Ra two order of magnitude enhancement as compared to 199 Hg Dobaczewski & Engel, Phys. Rev. Lett. 94, 232502 (2005) Closely spaced parity doublet gives rise to enhanced electric dipole moment 225 Ra (Starting at ANL and KVI) 199 Hg (Seattle, 1980’s – present)

10 Atomic limit (from atomic transitions) for the time-variations of  :  /  10 -16 / year Nuclear clock: 229 Th + - 7.6 0.5keV 5/2 + 3/2 +  V C is model dependent: s.p. HF models give 100keV-350keV pairing „kills” the effect (~1keV) see: Litvinova.. Dobaczewski.. et al. PRC79, 064303 (2009)  /  10 -22 / year

11 Tolman-Oppenheimer-Volkov equations set M(R) relation: Barcelona-Milano-Lublin collaboration (Warda) -18 Osaka measurement of the electric dipole polarizability in 208 Pb Erler (Nazarewicz, Rafalski UW/OR) et al. PRC87, 044320 (2013)

12 Sobiczewski, Skalski, Kowal, Patyk et al. Baran, Staszczak, Warda, Dobaczewski, Nazarewicz et al. Viola-Seaborg estimates Jachimowicz, Kowal, Skalski, PRC83, 054302 (2011) Staszczak, Baran, Nazarewicz, PRC87, 024320 (2013)

13 Summary of SkM* results for the height of the inner fission barrier (E A ), α-decay half- lives (log 10 T α ), and SF half-lives (log 10 T SF ) of the dominant SF channel: symmetric (S), asymmetric (A), or binary (B). Staszczak, Baran, Nazarewicz, PRC87, 024320 (2013)

14 Densisty functional contains normal densities, anomalous density (pairing) and currents: Density Functional Theory for superfluid systems and time dependent phenomena in nuclei and quantum gases far from equilibrium. Time-dependent Bogoliubov-de Gennes equations Presented calculations for unitary Fermi gas required over 200,000 cores of Titan (Oak Ridge Nat. Lab.) 1peta=10 15 flops Numerical solutions are possible due to efficient software, incorporating highly sophisticated computer science solutions and the fastest computers

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16 strongly contributes to foreign research centers (Nazarewicz, Dudek, Danielewicz, Płoszajczak, Dobaczewski) staff is aging – juniors (including PhD) constitute ~25% of the total staff is internationally competitive is focused on exciting, interdisciplinary, and relevant subjects strongly contributes to PACs, white- and bluebooks, road maps etc contributes to organization of meetings (Kazimerz)


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