Probing Cold Dense Nuclear Matter

Subedi, R.; Shneor, R.; Monaghan, Peter; Anderson, B. D.; Aniol, K.; Annand, J. R. M.; Arrington, J.; Benaoum, H.; Benmokhtar, F.; Boeglin, W.; Chen, J.-P.; Choi, S.; Cisbani, E.; Craver, B.; Frullani, S.; Garibaldi, F.; Gilad, S.; Gilman, R.; Glamazdin, A.; Hansen, J.‐O.; Higinbotham, D. W.; Holmstrom, T.; Ibrahim, H.; Igarashi, R.; Jager, C. W. de; Jans, E.; Jiang, X.; Kaufman, L. J.; Kelleher, A.; Kolarkar, A.; Kumbartzki, G.; LeRose, J.; Lindgren, R.; Liyanage, N.; Margaziotis, D. J.; Markowitz, P.; Marrone, S.; Mazouz, M.; Meekins, D.; Michaels, R.; Moffit, B.; Perdrisat, C. F.; Piasetzky, E.; Potokar, M.; Punjabi, V.; Qiang, Y.; Reinhold, J.; Ron, G.; Rosner, G.; Saha, A.; Sawatzky, B.; Shahinyan, A.; Širca, S.; Slifer, K.; Solvignon, P.; Sulkosky, V.; Urciuoli, G. M.; Voutier, E.; Watson, J. W.; Weinstein, Lawrence; Wojtsekhowski, B.; Wood, S. A.; Zheng, X.; Zhu, Lingyan

doi:10.1126/science.1156675

Cited by 446 publications

(542 citation statements)

References 27 publications

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“…The dominating role of the tensor correlations was also found in other microscopic calculations [46,47,48] and has been confirmed experimentally by comparing (e, e ′ pp) with (e, e ′ pn) cross sections at high momentum transfer [49,50] and (p, pp) with (p, ppn) cross sections [51].…”

Section: Momentum Distributionssupporting

confidence: 49%

“…One might be tempted to believe that short-range correlations are not real, as soft phase-shift equivalent interactions with a modified off-shell behavior describe the asymptotic properties of the two-nucleon system and are successfully used for the description of many-body systems. However, short-range correlations are revealed by the stiffness of nuclear matter against compression or the high-momentum tails of nucleon momentum distributions that are presently gaining renewed interest [48,50,111,112]. Around the Fermi edge the momentum distributions differ from the mean-field ones also due to long-range correlations that are not accounted for by UCOM.…”

Section: Resultsmentioning

confidence: 99%

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Nuclear structure in the framework of the Unitary Correlation Operator Method

Roth¹,

Neff²,

Feldmeier³

2010

Progress in Particle and Nuclear Physics

162

217

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Correlations play a crucial role in the nuclear many-body problem. We give an overview of recent developments in nuclear structure theory aiming at the description of these interactioninduced correlations by unitary transformations. We focus on the Unitary Correlation Operator Method (UCOM), which offers a very intuitive, universal and robust approach for the treatment of short-range correlations. We discuss the UCOM formalism in detail and highlight the connections to other methods for the description of short-range correlations and the construction of effective interactions. In particular, we juxtapose UCOM with the Similarity Renormalization Group (SRG) approach, which implements the unitary transformation of the Hamiltonian through a very flexible flow-equation formulation. The UCOM-and SRG-transformed interactions are compared on the level of matrix elements and in many-body calculations within the no-core shell model and with Hartree-Fock plus perturbation theory for a variety of nuclei and observables. These calculations provide a detailed picture of the similarities and differences as well as the advantages and limitations of unitary transformation methods.

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Section: Momentum Distributionssupporting

confidence: 49%

Section: Resultsmentioning

confidence: 99%

Nuclear structure in the framework of the Unitary Correlation Operator Method

Roth¹,

Neff²,

Feldmeier³

2010

Progress in Particle and Nuclear Physics

162

217

View full text Add to dashboard Cite

show abstract

“…If one adopts the view that large momentum transfer reactions select initial states in which all the quarks and nucleons are close together, it is much more likely that there is a short-range, and thus high-momentum, pn pair than pp pair. This is what has been found in recent studies for nucleons above the Fermi surface that have momenta of several hundred MeV/c [78,79].…”

Section: Resultssupporting

confidence: 70%

“…These nucleon-nucleon correlations cause the ratio of pp to np pairs to be ∼5% in the relative momentum range of 300-600 MeV/c for both high-energy electron and proton scattering [77][78][79]. Starting with such a pair and final state re-scattering might lead to the observed relative transverse momentum and would explain the relatively small cross sections.…”

Section: Scaling Regionmentioning

confidence: 99%

Hard photo-disintegration of proton pairs in <sup>3</sup>He nuclei

Pomerantz

2011

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“…Historically, several electron scattering studies have provided a wealth of information on nuclear spectral functions (see [2][3][4][5][6][7][8][9] and references therein). This has allowed a rather complete characterisation of correlations for stable nuclei [1].…”

Section: Introductionmentioning

confidence: 99%

Chiral three-nucleon forces and the evolution of correlations along the oxygen isotopic chain

2015

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Background: Three-nucleon forces (3NFs) have non trivial implications on the evolution of correlations at extreme proton-neutron asymmetries. Recent ab initio calculations show that leading order chiral interactions are crucial to obtain the correct binding energies and neutron driplines along the O, N, and F chains, Ref.[A. Cipollone, C. Barbieri, P. Navrátil, Phys. Rev. Lett 111, 062501 (2013)].Purpose: Here, we discuss the impact of 3NFs along the oxygen chain for other quantities of interest, such has the spectral distribution for attachment and removal of a nucleon, spectroscopic factors and radii. The objective is to better delineate the general effects of 3NFs on nuclear correlations. Methods:We employ self-consistent Green's function (SCGF) theory which allows a comprehensive calculation of the single particle spectral function. For the closed subshell isotopes, 14 O, 16 O, 22 O, 24 O and 28 O, we perform calculations with the Dyson-ADC(3) method which is fully non-perturbative and is the state of the art for both nuclear physic and quantum chemistry applications. The remaining open shell isotopes are studied using the newly developed Gorkov-SCGF formalism up to second order. Results:We produce complete plots for the spectral distributions. The spectroscopic factors for the dominant quasiparticle peaks are found to depend very little on the leading order (NNLO) chiral 3NFs. The latters have small impact on the calculated matter radii, which, however are consistently obtained smaller than experiment. Similarly, single particle spectra tend to be too spread with respect to the experiment. This effect might hinder, to some extent, the onset of correlations and screen the quenching of calculated spectroscopic factors. The most important effect of 3NFs is thus the fine tuning of the energies for the dominant quasiparticle states, which governs the shell evolution and the position of driplines.Conclusions: Although present chiral NNLO 3NFs interactions do reproduce the binding energies correctly in this mass region, the details of the nuclear spectral function remain at odd with the experiment showing too small radii and a too spread single particle spectrum, similar to what already pointed out for larger masses. This suggests a lack of repulsion in the present model of NN+3N interactions which is mildly apparent already for masses in the A=14-28 range.

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Probing Cold Dense Nuclear Matter

Cited by 446 publications

References 27 publications

Nuclear structure in the framework of the Unitary Correlation Operator Method

Nuclear structure in the framework of the Unitary Correlation Operator Method

Hard photo-disintegration of proton pairs in <sup>3</sup>He nuclei

Chiral three-nucleon forces and the evolution of correlations along the oxygen isotopic chain

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