Electronic characterization of polar nanoregions in relaxor-type ferroelectric<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>NaNbO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>films

cai, biya; Schwarzkopf, Jutta; Hollmann, E.; Braun, Dorothee; Schmidbauer, M.; Grellmann, T.; Wördenweber, R.

doi:10.1103/physrevb.93.224107

Cited by 26 publications

(25 citation statements)

References 49 publications

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“…Taking x HMT SNM = (28 ± 4)% and x HMT PNM = (1.5 ± 0.5)% consistent with the recent analyses of electron-nucleus scattering data at Jlab [75], the resulting kinetic symmetry energy (red open circle with error bar) is compared in Fig. 18 with findings of several studies using both phenomenological models [162,167] and microscopic nuclear manybody theories [40,143,168,169,170]. While the results are quantitatively different, they all consistently show significant reductions compared to the FFG value.…”

Section: The Role Of the Isospin-dependent Short-range Correlation (Ssupporting

confidence: 54%

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Towards understanding astrophysical effects of nuclear symmetry energy

et al. 2019

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Determining the Equation of State (EOS) of dense neutron-rich nuclear matter is a shared goal of both nuclear physics and astrophysics. Except possible phase transitions, the density dependence of nuclear symmetry Esym(ρ) is the most uncertain part of the EOS of neutron-rich nucleonic matter especially at supra-saturation densities. Much progresses have been made in recent years in predicting the symmetry energy and understanding why it is still very uncertain using various microscopic nuclear many-body theories and phenomenological models. Simultaneously, significant progresses have also been made in probing the symmetry energy in both terrestrial nuclear laboratories and astrophysical observatories. In light of the GW170817 event as well as ongoing or planned nuclear experiments and astrophysical observations probing the EOS of dense neutron-rich matter, we review recent progresses and identify new challenges to the best knowledge we have on several selected topics critical for understanding astrophysical effects of the nuclear symmetry energy.PACS. 2 6.60.Kp Contents B.A Li, P.G. Krastev, D.H. Wen and N.B. Zhang: Astrophysical Effects of Nuclear Symmetry Energy 5.2.2 Predicted correlation strength between the radii of neutron stars and the symmetry energy from low to high densities 32 5.2.3 Predicted effects of the symmetry energy on the tidal deformability of neutron stars 33 5.3 Post-GW170817 analyses of tidal deformability and radii of neutron stars as well as constraints on the nuclear EOS and symmetry energy . . . 34 5.3.

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Section: The Role Of the Isospin-dependent Short-range Correlation (Ssupporting

confidence: 54%

“…Effects of the HMT on the potential part or the total E sym (ρ) can be studied within nuclear energy density functionals [130,167]. For example, making the replacement of Eq.…”

Section: The Role Of the Isospin-dependent Short-range Correlation (Smentioning

confidence: 99%

Towards understanding astrophysical effects of nuclear symmetry energy

et al. 2019

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“…Here we examine how the SRC can modify simultaneously both the kinetic and potential parts of the EOS of ANM, especially the density dependence of nuclear symmetry energy within a nonlinear RMF model and then a modified-Gogny energy functional. To include the SRC-induced HMT in RMF models, the kinetic energy density and the corresponding pressure were modified according to [321]…”

Section: Src Effects On the Density Dependence Of Nuclear Symmetry Enmentioning

confidence: 99%

Nucleon effective masses in neutron-rich matter

Li¹,

Cai²,

Chen³

et al. 2018

Progress in Particle and Nuclear Physics

182

112

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Various kinds of isovector nucleon effective masses are used in the literature to characterize the momentum/energy dependence of the nucleon symmetry potential or self-energy due to the space/time non-locality of the underlying isovector strong interaction in neutron-rich nucleonic matter. The multifaceted studies on nucleon isovector effective masses are multi-disciplinary in nature. Besides structures, masses and low-lying excited states of nuclei as well as nuclear reactions, studies of the isospin dependence of short-range correlations in nuclei from scatterings of high-energy electrons and protons on heavy nuclei also help understand nucleon effective masses especially the so-called E-mass in neutron-rich matter. A thorough understanding of all kinds of nucleon effective masses has multiple impacts on many interesting issues in both nuclear physics and astrophysics. Indeed, essentially all microscopic many-body theories and phenomenological models with various nuclear forces available in the literature have been used to calculate single-nucleon potentials and the associated nucleon effective masses in neutron-rich matter. There are also fundamental principles connecting different aspects and impacts of isovector strong interactions. In particular, the Hugenholtz-Van Hove theorem connects analytically nuclear symmetry energy with both isoscalar and isovector nucleon effective masses as well as their own momentum dependences. It also reveals how the isospin-quartic term in the equation of state of neutron-rich matter depends on the high-order momentum-derivatives of both isoscalar and isovector nucleon potentials. The Migdal-Luttinger theorem facilitates the extraction of nucleon E-mass and its isospin dependence from experimentally constrained single-nucleon momentum distributions. The momentum/energy dependence of the symmetry potential and the corresponding neutron-proton effective mass splitting also affect transport properties and the liquid-gas phase transition in neutron-rich matter. Moreover, they influence the dynamics and isospin-sensitive observables of heavy-ion collisions through both the Vlasov term and the collision integrals of the Boltzmann-Uehling-Uhlenbeck transport equation. We review here some of the significant progresses made in recent years by the nuclear physics community in resolving some of the hotly debated and longstanding issues regarding nucleon effective masses especially in dense neutron-rich matter. We also point out some of the remaining key issues requiring further investigations in the era of high precision experiments using advanced rare isotope beams. Nucleon effective masses in non-relativistic modelsWe focus on non-relativistic nucleon effective masses or the ones derived from the Schrödinger equivalent singleparticle potential in relativistic models. The k-mass M * ,k J and E-mass M * ,E J of a nucleon J = n/p can be obtained from the momentum and energy dependence of the single-nucleon potential U J (ρ, δ, k, E) in nucleonic matter of density ρ and isospin asymmetry δ...

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“…[15][16][17] for recent reviews. SRC pairs are thus a vital part of nuclei with implications for many important topics including the possible modification of bound nucleon structure and the extraction of the free neutron structure function [15,[18][19][20][21][22], neutrino-nucleus interactions and neutrino oscillation experiments [23][24][25][26][27][28], neutrino-less double beta decay searches [29,30], as well as neutron star structure and the nuclear symmetry energy [31][32][33].…”

Section: Pacs Numbersmentioning

confidence: 99%

Center of Mass Motion of Short-Range Correlated Nucleon Pairs studied via the A(e,e′pp) Reaction

Cohen¹,

Hen²,

Piasetzky³

et al. 2018

Phys. Rev. Lett.

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Short-range correlated (SRC) nucleon pairs are a vital part of the nucleus, accounting for almost all nucleons with momentum greater than the Fermi momentum (k_{F}). A fundamental characteristic of SRC pairs is having large relative momenta as compared to k_{F}, and smaller center of mass (c.m.) which indicates a small separation distance between the nucleons in the pair. Determining the c.m. momentum distribution of SRC pairs is essential for understanding their formation process. We report here on the extraction of the c.m. motion of proton-proton (pp) SRC pairs in carbon and, for the first time in heavier and ansymetric nuclei: aluminum, iron, and lead, from measurements of the A(e,e^{'}pp) reaction. We find that the pair c.m. motion for these nuclei can be described by a three-dimensional Gaussian with a narrow width ranging from 140 to 170 MeV/c, approximately consistent with the sum of two mean-field nucleon momenta. Comparison with calculations appears to show that the SRC pairs are formed from mean-field nucleons in specific quantum states.

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Electronic characterization of polar nanoregions in relaxor-type ferroelectricNaNbO3films

Cited by 26 publications

References 49 publications

Towards understanding astrophysical effects of nuclear symmetry energy

Towards understanding astrophysical effects of nuclear symmetry energy

Nucleon effective masses in neutron-rich matter

Center of Mass Motion of Short-Range Correlated Nucleon Pairs studied via the A(e,e′pp) Reaction

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