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NSR database version of April 11, 2024.

Search: Author = K.A.Wendt

Found 13 matches.

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2022CI08      J.Phys.(London) G49, 120502 (2022)

V.Cirigliano, Z.Davoudi, J.Engel, R.J.Furnstahl, G.Hagen, U.Heinz, H.Hergert, M.Horoi, C.W.Johnson, A.Lovato, E.Mereghetti, W.Nazarewicz, A.Nicholson, T.Papenbrock, S.Pastore, M.Plumlee, D.R.Phillips, P.E.Shanahan, S.R.Stroberg, F.Viens, A.Walker-Loud, K.A.Wendt, S.M.Wild

Towards precise and accurate calculations of neutrinoless double-beta decay

RADIOACTIVITY 48Ca(2β-); calculated neutrinoless nuclear matrix elements using chiral-EFT interactions, EDF, IBM, QRPA, SM-pf, SM-sdpf, SM-MBPT, RSM, QMC+SM, IM-GCM, VS-IMSRG, CCSD, CCSD-T1.

doi: 10.1088/1361-6471/aca03e
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2020KR08      Phys.Rev. C 102, 024616 (2020)

K.Kravvaris, K.R.Quinlan, S.Quaglioni, K.A.Wendt, P.Navratil

Quantifying uncertainties in neutron-α scattering with chiral nucleon-nucleon and three-nucleon forces

NUCLEAR REACTIONS 4He(n, n), (n, X)5He*, E(cm)<10.5 MeV; calculated phase shifts from third to fifth order of the chiral expansion in comparison to the empirical phase shifts obtained from R-matrix analysis of A=5 reaction data, phase shifts from the Gaussian process model (GPM) with local/nonlocal 3N force, Bayesian posterior distributions of low-energy constants for the contact plus one-pion exchange using the binding energies of 3H and 4He and the charge radius of 4He, positions and widths of n-α resonances. 4,5He; calculated ground-state energy, point-proton radius and charge radius, and associated chiral uncertainties using the chiral interaction models. Computation of structure and reaction observables for three-, four-, and five-nucleon systems within the ab initio frameworks of the no-core shell model and no-core shell model with continuum. Overall uncertainty budget of many-body calculations using Bayesian statistics. Comparison with experimental data.

doi: 10.1103/PhysRevC.102.024616
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2019GY02      Nat.Phys. 15, 428 (2019)

P.Gysbers, G.Hagen, J.D.Holt, G.R.Jansen, T.D.Morris, P.Navratil, T.Papenbrock, S.Quaglioni, A.Schwenk, S.R.Stroberg, K.A.Wendt

Discrepancy between experimental and theoretical β-decay rates resolved from first principles

NUCLEAR STRUCTURE 3H, 6Li, 7Be, 8He, 10C, 14O, 19,24Ne, 37K, 25,28Al, 24,26Na, 30Mg, 33,34P, 42,43,46Sc, 42,45Ti, 45,47V, 100Sn; calculated the Gamow–Teller strength for β decay.

doi: 10.1038/s41567-019-0450-7
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2016BI07      Phys.Rev. C 93, 044332 (2016)

S.Binder, A.Ekstrom, G.Hagen, T.Papenbrock, K.A.Wendt

Effective field theory in the harmonic oscillator basis

NUCLEAR STRUCTURE 2,3H, 3,4He; calculated binding energies and radii from different effective interactions. 4He, 16O, 40Ca, 90Zr, 132Sn; calculated ground-state energies and squared point proton radii. Coupled-cluster calculations at the singles and doubles level using chiral effective field theory (EFT) in harmonic oscillator basis. Comparison with experimental data.

doi: 10.1103/PhysRevC.93.044332
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2016GA34      Nat.Phys. 12, 594 (2016)

R.F.Garcia Ruiz, M.L.Bissell, K.Blaum, A.Ekstrom, N.Frommgen, G.Hagen, M.Hammen, K.Hebeler, J.D.Holt, G.R.Jansen, M.Kowalska, K.Kreim, W.Nazarewicz, R.Neugart, G.Neyens, W.Nortershauser, T.Papenbrock, J.Papuga, A.Schwenk, J.Simonis, K.A.Wendt, D.T.Yordanov

Unexpectedly large charge radii of neutron-rich calcium isotopes

NUCLEAR REACTIONS U(p, X)43Ca/44Ca/45Ca/46Ca/47Ca/48Ca/49Ca/50Ca/51Ca/52Ca, E=1.4GeV; measured hyperfine structure spectra; deduced charge radii. Comparison with available data.

doi: 10.1038/nphys3645
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2016HA27      Nat.Phys. 12, 186 (2016)

G.Hagen, A.Ekstrom, C.Forssen, G.R.Jansen, W.Nazarewicz, T.Papenbrock, K.A.Wendt, S.Bacca, N.Barnea, B.Carlsson, C.Drischler, K.Hebeler, M.Hjorth-Jensen, M.Miorelli, G.Orlandini, A.Schwenk, J.Simonis

Neutron and weak-charge distributions of the 48Ca nucleus

NUCLEAR STRUCTURE 48Ca; calculated neutron skin parameters, radii. Ab initio calculations.

doi: 10.1038/nphys3529
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2015EK01      Phys.Rev. C 91, 051301 (2015)

A.Ekstrom, G.R.Jansen, K.A.Wendt, G.Hagen, T.Papenbrock, B.D.Carlsson, C.Forssen, M.Hjorth-Jensen, P.Navratil, W.Nazarewicz

Accurate nuclear radii and binding energies from a chiral interaction

NUCLEAR STRUCTURE 2H, 4,8He, 6,9Li, 14C, 16O, 40Ca; calculated ground-state energies, charge radii, quadrupole moment for deuteron. 6Li, 14C, 16O, 22,24F, 22,24O, 40Ca; calculated levels, J, π, charge density in 16O, scattering lengths, and effective ranges in low-energy proton-proton scattering, scattering phase shifts in low-energy neutron-proton scattering, half-life for the β- decay of 3H; deduced consistently optimized interaction from chiral EFT at NNLO for nuclei and infinite nuclear matter. Coupled-cluster calculations based on chiral effective field theory interaction (NNLOsat). Comparison with experimental data.

doi: 10.1103/PhysRevC.91.051301
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2015WE05      Phys.Rev. C 91, 061301 (2015)

K.A.Wendt, C.Forssen, T.Papenbrock, D.Saaf

Infrared length scale and extrapolations for the no-core shell model

NUCLEAR STRUCTURE 4,6He, 6,7Li, 10B, 16O; calculated infrared (IR) length scale, Ground-state energy as a function of the IR scale, binding energy per particle. Large-scale no-core shell model (NCSM) with Dirichlet boundary condition. Comparison with Benchmark results from coupled-cluster calculations for 16O.

doi: 10.1103/PhysRevC.91.061301
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2014EK01      Phys.Rev.Lett. 113, 262504 (2014)

A.Ekstrom, G.R.Jansen, K.A.Wendt, G.Hagen, T.Papenbrock, S.Bacca, B.Carlsson, D.Gazit

Effects of Three-Nucleon Forces and Two-Body Currents on Gamow-Teller Strengths

RADIOACTIVITY 14C, 22,24O(β-); calculated quenching factor; deduced a novel coupled-cluster technique for the computation of spectra in the daughter nuclei and made several predictions and spin assignments in the exotic neutron-rich isotopes of fluorine.

NUCLEAR STRUCTURE 14N, 22,24F; calculated energy levels, J, π.

doi: 10.1103/PhysRevLett.113.262504
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2014HA01      Phys.Rev. C 89, 014319 (2014)

G.Hagen, T.Papenbrock, A.Ekstrom, K.A.Wendt, G.Baardsen, S.Gandolfi, M.Hjorth-Jensen, C.J.Horowitz

Coupled-cluster calculations of nucleonic matter

NUCLEAR STRUCTURE A=10-1000; N=66, 132; calculated relative finite-size corrections for the kinetic energy in pure neutron matter, E/A of nuclear and neutron matter. Coupled-cluster computations of equation of state (EoS) for symmetric nuclear matter and neutron matter using optimized nucleon-nucleon (NN) potential NNLOopt at next-to-next-to leading order. Comparison with benchmark calculations.

doi: 10.1103/PhysRevC.89.014319
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2013WE06      Phys.Rev. C 87, 061001 (2013)


Similarity renormalization group evolution of three-nucleon forces in a hyperspherical momentum representation

doi: 10.1103/PhysRevC.87.061001
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2012WE06      Phys.Rev. C 86, 014003 (2012)

K.A.Wendt, R.J.Furnstahl, S.Ramanan

Local projections of low-momentum potentials

doi: 10.1103/PhysRevC.86.014003
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2011WE03      Phys.Rev. C 83, 034005 (2011)

K.A.Wendt, R.J.Furnstahl, R.J.Perry

Decoupling of spurious deeply bound states with the similarity renormalization group

doi: 10.1103/PhysRevC.83.034005
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