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NSR database version of May 10, 2024.

Search: Author = A.Calci

Found 28 matches.

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2018BI08      Phys.Rev. C 98, 014002 (2018)

S.Binder, A.Calci, E.Epelbaum, R.J.Furnstahl, J.Golak, K.Hebeler, T.Huther, H.Kamada, H.Krebs, P.Maris, Ulf-G.Meissner, A.Nogga, R.Roth, R.Skibinski, K.Topolnicki, J.P.Vary, K.Vobig, H.Witala, at the LENPIC Collaboration

Few-nucleon and many-nucleon systems with semilocal coordinate-space regularized chiral nucleon-nucleon forces

NUCLEAR REACTIONS 2H(n, n), E=5, 10, 14.1 MeV; 2H(n, 2np), E=13, 65 MeV; calculated differential σ(θ), Ay analyzing powers, nucleon and deuteron vector analyzing powers, phase shifts, polarization-transfer coefficient, breakup cross sections, and pd analyzing powers.

NUCLEAR STRUCTURE 3H, 3,4He, 6Li; calculated binding energies, ground-state energies of 4He and 6Li, proton rms radii. 3H, 4,6,8He, 6,7,8,9Li, 8,9Be, 10B, 16,24O, 40,48Ca; calculated ground state energies. 3H, 3He, 6,7,8,9Li, 7,9Be, 8,9,10B, 9C; calculated magnetic dipole moments. 16,24O, 40,48Ca; calculated charge radii. Faddeev-Yakubovsky equations, with no-core configuration interaction approach, coupled-cluster (CC) theory, and in-medium similarity renormalization group (IM-SRG)methods with SCS chiral nucleon-nucleon (NN) potentials. Comparison with experimental values, and with other theoretical predictions.

doi: 10.1103/PhysRevC.98.014002
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2018GE01      Phys.Rev. C 97, 034619 (2018)

M.Gennari, M.Vorabbi, A.Calci, P.Navratil

Microscopic optical potentials derived from ab initio translationally invariant nonlocal one-body densities

NUCLEAR STRUCTURE 4,6,8He, 12C, 16O; calculated ground-state local and nonlocal neutron and proton densities using relativistic mean-field for spherical nuclei, and NN-N4LO(500)+3Nlnl interaction. Calculated densities applied to optical potential construction for analysis of elastic scattering reactions.

NUCLEAR REACTIONS 4He(p, p), (polarized p, p), E=72, 156, 200 MeV; 1H(6He, p), (8He, p), E=71, 200 MeV, and polarized proton targets; 12C(p, p), (polarized p, p), E=122, 160, 200 MeV; 16O(p, p), (polarized p, p), E=100, 135, 200 MeV; calculated differential σ(θ, E), analyzing powers Ay from translational invariant (trinv) local and nonlocal densities, and from center of mass (COM) contaminated density (wiCOM) and trinv nonlocal densities. Microscopic optical potentials with chiral NN-N4LO(500) interactions as the only input. Comparison with experimental data.

doi: 10.1103/PhysRevC.97.034619
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2018VO02      Phys.Rev. C 97, 034314 (2018)

M.Vorabbi, A.Calci, P.Navratil, M.K.G.Kruse, S.Quaglioni, G.Hupin

Structure of the exotic 9He nucleus from the no-core shell model with continuum

NUCLEAR STRUCTURE 9He; calculated n+8He continuum by ab initio no-core shell model with continuum (NCSMC) formalism and chiral nucleon-nucleon interactions at N4LO; deduced unbound character of 9He, and two resonant states, J, π. Comparison with structure of 10Li and 11B. 4,6,8He; calculated ground-state energies by NCSM using the SRG-evolved N4LO nucleon-nucleon potential. Comparison with available experimental data.

doi: 10.1103/PhysRevC.97.034314
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2017KU11      Phys.Rev.Lett. 118, 262502 (2017)

A.Kumar, R.Kanungo, A.Calci, P.Navratil, A.Sanetullaev, M.Alcorta, V.Bildstein, G.Christian, B.Davids, J.Dohet-Eraly, J.Fallis, A.T.Gallant, G.Hackman, B.Hadinia, G.Hupin, S.Ishimoto, R.Krucken, A.T.Laffoley, J.Lighthall, D.Miller, S.Quaglioni, J.S.Randhawa, E.T.Rand, A.Rojas, R.Roth, A.Shotter, J.Tanaka, I.Tanihata, C.Unsworth

Nuclear Force Imprints Revealed on the Elastic Scattering of Protons with 10C

NUCLEAR REACTIONS 10C(p, p), E(cm)=4.15, 4.4 eV; measured reaction products, Ep, Ip; deduced σ(θ). Comparison with ab initio no-core shell model with continuum calculations.

doi: 10.1103/PhysRevLett.118.262502
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2017ST03      Phys.Rev.Lett. 118, 032502 (2017)

S.R.Stroberg, A.Calci, H.Hergert, J.D.Holt, S.K.Bogner, R.Roth, A.Schwenk

Nucleus-Dependent Valence-Space Approach to Nuclear Structure

NUCLEAR STRUCTURE 16,18,22O, 10B, 22Na, 46V, C, N, O, Na, Ca, Ni; calculated ground-state energies, J, π, the extension of ab initio nuclear structure calculations.

doi: 10.1103/PhysRevLett.118.032502
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2016BI06      Phys.Rev. C 93, 044002 (2016)

S.Binder, A.Calci, E.Epelbaum, R.J.Furnstahl, J.Golak, K.Hebeler, H.Kamada, H.Krebs, J.Langhammer, S.Liebig, P.Maris, Ulf-G.Meissner, D.Minossi, A.Nogga, H.Potter, R.Roth, R.Skibinski, K.Topolnicki, J.P.Vary, H.Witala, for the LENPIC Collaboration

Few-nucleon systems with state-of-the-art chiral nucleon-nucleon forces

NUCLEAR STRUCTURE 3H, 4He, 6Li; calculated energies of ground-state and lowest two states, point-proton radius using improved NN chiral potentials LO, NLO, N2LO, N3LO and N4LO. Comparison with experimental data.

NUCLEAR REACTIONS 3H, 4He, 6Li(d, X), (polarized d, d), E=10, 70, 135, 200 MeV; total σ(E), differential cross section and tensor analyzing powers for elastic scattering based on NN chiral potentials LO, NLO, N2LO, N3LO and N4LO. Comparison with experimental data.

doi: 10.1103/PhysRevC.93.044002
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2016CA29      Phys.Rev. C 94, 014322 (2016)

A.Calci, R.Roth

Sensitivities and correlations of nuclear structure observables emerging from chiral interactions

NUCLEAR STRUCTURE 6Li, 10B, 12C; calculated energy levels, magnetic dipole and electric quadrupole moments, B(M1), B(E2); deduced correlations between E1 and M1 observables. Ab initio, importance-truncated no-core shell model, with systematic uncertainties of chiral NN+3N interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.94.014322
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2016CA39      Phys.Rev.Lett. 117, 242501 (2016)

A.Calci, P.Navratil, R.Roth, J.Dohet-Eraly, S.Quaglioni, G.Hupin

Can Ab Initio Theory Explain the Phenomenon of Parity Inversion in 11Be?

NUCLEAR STRUCTURE 11Be; calculated J, π, B(E1). Comparison with experimental data.

doi: 10.1103/PhysRevLett.117.242501
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2016GE01      Phys.Rev. C 93, 031301 (2016)

E.Gebrerufael, A.Calci, R.Roth

Open-shell nuclei and excited states from multireference normal-ordered Hamiltonians

NUCLEAR STRUCTURE 4He, 16O, 6Li, 10B, 12C; calculated absolute ground-state energies for 4He and 10B, levels, J, π for 6Li, 10B, +12C as function of Nmax for NN+3N-induced NN+3N-full Hamiltonians. The ab initio nuclear structure calculations using a multireference formulation of normal ordering and Wick's theorem. Comparison with experimental values.

doi: 10.1103/PhysRevC.93.031301
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2016NA12      Phys.Scr. 91, 053002 (2016)

P.Navratil, S.Quaglioni, G.Hupin, C.Romero-Redondo, A.Calci

Unified ab initio approaches to nuclear structure and reactions

NUCLEAR REACTIONS 7Be(p, γ), 3H(d, n), E<20 MeV; calculated S-factors, elastic phase shifts, σ.

doi: 10.1088/0031-8949/91/5/053002
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2015LA04      Phys.Rev. C 91, 021301 (2015)

J.Langhammer, P.Navratil, S.Quaglioni, G.Hupin, A.Calci, R.Roth

Continuum and three-nucleon force effects on 9Be energy levels

NUCLEAR STRUCTURE 9Be; calculated n-8Be phase shifts and eigenphase shifts for negative parity, levels, J, π relative to the n-8Be threshold. Calculations based on ab initio no-core shell model with continuum to include three-nucleon (3N) interactions.

doi: 10.1103/PhysRevC.91.021301
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2014BI14      Phys.Lett. B 736, 119 (2014)

S.Binder, J.Langhammer, A.Calci, R.Roth

Ab initio path to heavy nuclei

NUCLEAR STRUCTURE 16,24O, 36,40,48,52,54Ca, 48,56,60,62,66,68,78Ni, 90Zr, 100,106,108,114,116,118,120,132Sn; calculated ground state energies in ab initio approaches based on chiral Hamiltonian.

doi: 10.1016/j.physletb.2014.07.010
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2014BO25      Phys.Rev.Lett. 113, 142501 (2014)

S.K.Bogner, H.Hergert, J.D.Holt, A.Schwenk, S.Binder, A.Calci, J.Langhammer, R.Roth

Nonperturbative Shell-Model Interactions from the In-Medium Similarity Renormalization Group

NUCLEAR STRUCTURE 21,22,23,24,25,26O; calculated energy levels, J, π. Comparison with experimental data.

doi: 10.1103/PhysRevLett.113.142501
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2014GO30      Eur.Phys.J. A 50, 177 (2014)

J.Golak, R.Skibinski, K.Topolnicki, H.Witala, E.Epelbaum, H.Krebs, H.Kamada, Ulf-G.Meissner, V.Bernard, P.Maris, J.Vary, S.Binder, A.Calci, K.Hebeler, J.Langhammer, R.Roth, A.Nogga, S.Liebig, D.Minossi

Low-energy neutron-deuteron reactions with N3LO chiral forces

NUCLEAR REACTIONS 2H(n, n), E=6.5, 10 MeV; calculated analyzing power. 2H(n, x), E=13.0 MeV; calculated σ(θ). Three-nucleon Faddeev equations with different N3LO chiral forces. Compared to data.

doi: 10.1140/epja/i2014-14177-7
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2014HE23      Phys.Rev. C 90, 041302 (2014)

H.Hergert, S.K.Bogner, T.D.Morris, S.Binder, A.Calci, J.Langhammer, R.Roth

Ab initio multireference in-medium similarity renormalization group calculations of even calcium and nickel isotopes

NUCLEAR STRUCTURE 34,36,38,40,42,44,46,48,50,52,54,56,58,60,62Ca, 48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90Ni; calculated ground state energies, and S(2n) using multireference in-medium similarity renormalization group based on NN+3N nucleon interactions from chiral effective field theory. Comparison with other calculations and experimental results.

doi: 10.1103/PhysRevC.90.041302
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2014HU17      Few-Body Systems 55, 1013 (2014)

G.Hupin, S.Quaglioni, J.Langhammer, P.Navratil, A.Calci, R.Roth

Progress on Light-Ion Fusion Reactions with Three-Nucleon Forces

NUCLEAR REACTIONS 4He(n, n), E<16 MeV; calculated σ(θ), phase shifts. Comparison with available data.

doi: 10.1007/s00601-013-0800-4
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2014MA47      Phys.Rev. C 90, 014314 (2014)

P.Maris, J.P.Vary, A.Calci, J.Langhammer, S.Binder, R.Roth

12C properties with evolved chiral three-nucleon interactions

NUCLEAR STRUCTURE 12C; calculated levels, J, π, point-proton rms radii, quadrupole moments, B(E2), B(M1) using ab initio no-core shell model (NCSM), important truncated no-core shell model (IT-NCSM) methods with similarity renormalization group (SRG) involved chiral NN + 3N Hamiltonians. Comparison with experimental data.

doi: 10.1103/PhysRevC.90.014314
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2014RO18      Phys.Rev. C 90, 024325 (2014)

R.Roth, A.Calci, J.Langhammer, S.Binder

Evolved chiral NN+3N Hamiltonians for ab initio nuclear structure calculations

NUCLEAR STRUCTURE 4He, 7Li, 8,10Be, 12,14C, 16O; calculated ground state energies, level spectrum for 12C. Inclusion of Chiral NN+3N interactions into ab initio nuclear structure calculations. Similarity renormalization group (SRG) evolution in the 3N sector. JT-coupled storage scheme for 3N matrix elements with on-the-fly decoupling. Importance of truncated no-core shell model with 3N interactions.

doi: 10.1103/PhysRevC.90.024325
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2014RO22      Few-Body Systems 55, 659 (2014)

R.Roth, A.Calci, J.Langhammer, S.Binder

Ab Initio Nuclear Structure Theory: From Few to Many

NUCLEAR STRUCTURE 12,16,18C; calculated energy levels, J, π, ground state energies. IT-NCSM calculations.

doi: 10.1007/s00601-014-0860-0
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2014WI05      Phys.Rev.Lett. 113, 192502 (2014)

R.Wirth, D.Gazda, P.Navratil, A.Calci, J.Langhammer, R.Roth

AbĀInitio Description of p-Shell Hypernuclei

NUCLEAR STRUCTURE 7Li, 9Be, 13C; calculated ground-state energy of s-shell hypernuclei, absolute and excitation energies.

doi: 10.1103/PhysRevLett.113.192502
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2013BI01      Phys.Rev. C 87, 021303 (2013)

S.Binder, J.Langhammer, A.Calci, P.Navratil, R.Roth

Ab initio calculations of medium-mass nuclei with explicit chiral 3N interactions

NUCLEAR STRUCTURE 16,24O, 40,48Ca, 56Ni; calculated ground-state energies as functions of different parameters. Ab initio coupled-cluster calculations with chiral three-nucleon (3N) interactions.

doi: 10.1103/PhysRevC.87.021303
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2013BI13      Phys.Rev. C 88, 054319 (2013)

S.Binder, P.Piecuch, A.Calci, J.Langhammer, P.Navratil, R.Roth

Extension of coupled-cluster theory with a noniterative treatment of connected triply excited clusters to three-body Hamiltonians

NUCLEAR STRUCTURE 16,24O, 40Ca; calculated total binding energies using coupled-cluster (CC) approach with singles, doubles, and the noniterative treatment of triples and chiral NN interaction at N3LO. Role of residual normal-ordered three-body contributions.

doi: 10.1103/PhysRevC.88.054319
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2013HE07      Phys.Rev. C 87, 034307 (2013)

H.Hergert, S.K.Bogner, S.Binder, A.Calci, J.Langhammer, R.Roth, A.Schwenk

In-medium similarity renormalization group with chiral two- plus three-nucleon interactions

NUCLEAR STRUCTURE 4He, 16,24O, 40,48Ca, 48,56Ni; calculated ground states energies, and binding energies using the in-medium similarity renormalization group (IM-SRG), based on chiral two- plus three-nucleon interactions. Comparison with coupled cluster calculations, truncated no-core shell model, and with experimental data.

doi: 10.1103/PhysRevC.87.034307
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2013HE15      Phys.Rev.Lett. 110, 242501 (2013)

H.Hergert, S.Binder, A.Calci, J.Langhammer, R.Roth

Ab Initio Calculations of Even Oxygen Isotopes with Chiral Two-Plus-Three-Nucleon Interactions

NUCLEAR STRUCTURE 14,16,18,20,22,24,26O; calculated ground-state energies and their uncertainties. In-medium similarity renormalization group (IM-SRG) for open-shell nuclei using a multireference formalism based on a generalized Wick theorem introduced in quantum chemistry. The resulting multireference IM-SRG(MR-IM-SRG) is used to perform the first ab initio study.

doi: 10.1103/PhysRevLett.110.242501
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2013HU10      Phys.Rev. C 88, 054622 (2013)

G.Hupin, J.Langhammer, P.Navratil, S.Quaglioni, A.Calci, R.Roth

Ab initio many-body calculations of nucleon-4He scattering with three-nucleon forces

NUCLEAR REACTIONS 4He(n, n), E=11, 15 MeV; 4He(p, p), E=5.95, 9.89, 7.89, 11.99 MeV; calculated scattering differential σ(E, θ), and analyzing powers. No-core shell model combined with resonating-group method (NCSM/RGM) including three-nucleon (3N) interactions. Algebraic expressions for 3N-force integration kernels. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.054622
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2012RO19      Phys.Rev.Lett. 109, 052501 (2012)

R.Roth, S.Binder, K.Vobig, A.Calci, J.Langhammer, P.Navratil

Medium-Mass Nuclei with Normal-Ordered Chiral NN+3N Interactions

NUCLEAR STRUCTURE 4He, 16,24O, 40,48Ca; calculated ground-state energies. NO2B approximation, chiral NN+3N hamiltonians.

doi: 10.1103/PhysRevLett.109.052501
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2012RO31      Prog.Theor.Phys.(Kyoto), Suppl. 196, 131 (2012)

R.Roth, J.Langhammer, A.Calci, S.Binder, P.Navratil

Ab Initio Nuclear Structure Theory with Chiral NN+3N Interactions

NUCLEAR STRUCTURE 12C, 16O; calculated ground state energies, level scheme, J, π.

doi: 10.1143/PTPS.196.131
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2011RO32      Phys.Rev.Lett. 107, 072501 (2011)

R.Roth, J.Langhammer, A.Calci, S.Binder, P.Navratil

Similarity-Transformed Chiral NN + 3N Interactions for the Ab Initio Description of 12C and 16O

NUCLEAR STRUCTURE 4He, 6Li, 12C, 16O; calculated ground-state energies, lowest-energy states, J, π. Ab initio no-core shell model (NCSM).

doi: 10.1103/PhysRevLett.107.072501
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