215 citations · 1.9k across the 41 of their papers we have counts for
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Four-body calculation of and reactions above breakup threshold
A. Deltuva, A. C. Fonseca
Nucleon transfer reactions in deuteron-deuteron collisions at energies above the three- and four-body breakup threshold are described using exact four-body equations for transition…
Benchmark calculation of p-3H and n-3He scattering
M. Viviani, A. Deltuva, R. Lazauskas +3
p-3H and n-3He scattering in the energy range above the n-3He but below the d-d thresholds is studied by solving the 4-nucleon problem with a realistic nucleon-nucleon interaction.…
Three-cluster breakup in deuteron-deuteron collisions: single-scattering approximation
A. Deltuva, A. C. Fonseca
We present results for the three-cluster breakup in deuteron-deuteron collisions at 130 and 270 MeV deuteron beam energy. The breakup amplitude is calculated using the first term i…
Four-body calculation of elastic deuteron-deuteron scattering
A. Deltuva, A. C. Fonseca
Fully converged calculations of deuteron-deuteron elastic scattering observables are performed at energies above three- and four-body breakup threshold. Differential cross sections…
Proton-H scattering calculation: Elastic and charge-exchange reactions up to 30 MeV
A. Deltuva, A. C. Fonseca
Proton-H elastic scattering and charge-exchange reaction HHe in the energy regime above four-nucleon breakup threshold are described in the momentum-space tr…
Deuteron-deuteron scattering above four-nucleon breakup threshold
A. Deltuva, A. C. Fonseca
Deuteron-deuteron elastic scattering and transfer reactions in the energy regime above four-nucleon breakup threshold are described by solving exact four-particle equations for tra…
Calculation of neutron-He scattering up to 30 MeV
A. Deltuva, A. C. Fonseca
Microscopic calculations of four-body collisions become very challenging in the energy regime above the threshold for four free particles. The neutron-He scattering is an exa…
Calculation of multichannel reactions in the four-nucleon system above breakup threshold
A. Deltuva, A. C. Fonseca
Exact four-body equations of Alt, Grassberger and Sandhas are solved for neutron- and proton- scattering in the energy regime above the four-nucleo…
Bound state techniques to solve the multiparticle scattering problem
J. Carbonell, A. Deltuva, A. C. Fonseca +1
Solution of the scattering problem turns to be very difficult task both from the formal as well as from the computational point of view. If the last two decades have witnessed deci…
Calculation of proton-He elastic scattering between 7 and 35 MeV
A. Deltuva, A. C. Fonseca
Background: Theoretical calculations of the four-particle scattering above the four-cluster breakup threshold are technically very difficult due to nontrivial singularities or boun…
H production via neutron-neutron-deuteron recombination
A. Deltuva, A. C. Fonseca
We study the recombination of two neutrons and deuteron into neutron and H using realistic nucleon-nucleon potential models. Exact Alt, Grassberger, and Sandhas equations for…
Neutron-H scattering above the four-nucleon breakup threshold
A. Deltuva, A. C. Fonseca
The four-body equations of Alt, Grassberger and Sandhas are solved for the neutron-H scattering at energies above the four-nucleon breakup threshold. The accuracy and practic…
Faddeev equation approach for three-cluster nuclear reactions
A. Deltuva, A. C. Fonseca, R. Lazauskas
In this lecture we aim to present a formalism based on Faddeev-like equations for describing nuclear three-cluster reactions that include elastic, transfer and breakup channels. Tw…
Benchmark calculation of n-3H and p-3He scattering
M. Viviani, A. Deltuva, R. Lazauskas +5
The n-3H and p-3He elastic phase-shifts below the trinucleon disintegration thresholds are calculated by solving the 4-nucleon problem with three different realistic nucleon-nucleo…
Polarization observables and spin-aligned fusion rates in 2H(d,p)3H and 2H(d,n)3He reactions
A. Deltuva, A. C. Fonseca
Nucleon transfer reactions in low-energy deuteron-deuteron scattering are described by solving exact four-particle equations in momentum space. The Coulomb interaction between the…
Relativistic corrections of one-nucleon current in low-energy three-nucleon photonuclear reactions
A. Deltuva, A. C. Fonseca, P. U. Sauer
Proton-deuteron radiative capture and two- and three-body photodisintegration of 3He at low energy are described using realistic hadronic dynamics and including the Coulomb force.…
Nucleon-nucleon charge symmetry breaking and the dd -> alpha pi0 reaction
A. C. Fonseca, R. Machleidt, G. A. Miller
We show that using parameters consistent with the charge symmetry violating difference between the strong nn and pp scattering lengths provides significant constraints on the ampli…
Three-body Faddeev-Alt-Grassberger-Sandhas approach to direct nuclear reactions
A. Deltuva, A. C. Fonseca
Momentum space three-body Faddeev-like equations are used to calculate elastic, transfer and charge exchange reactions resulting from the scattering of deuterons on 12C and 16O or…
Spectroscopy of the unbound: One-neutron knockout reaction of Be
R. Crespo, A. Deltuva, M. Rodríguez-Gallardo +2
Full Faddeev-type calculations are performed for one-neutron knockout reaction of Be on proton target at 69 MeV/u incident energy. Inclusive transverse momentum distribution…
Low-momentum interactions in three- and four-nucleon scattering
A. Deltuva, A. C. Fonseca, S. K. Bogner
Low momentum two-nucleon interactions obtained with the renormalization group method and the similarity renormalization group method are used to study the cutoff dependence of low…
Multiple scattering effects in quasi free scattering from halo nuclei: a test to Distorted Wave Impulse Approximation
R. Crespo, A. Deltuva, E. Cravo +2
Full Faddeev-type calculations are performed for Be breakup on proton target at 38.4, 100, and 200 MeV/u incident energies. The convergence of the multiple scattering expans…
Four-nucleon system with -isobar excitation
A. Deltuva, A. C. Fonseca, P. U. Sauer
The four-nucleon bound state and scattering below three-body breakup threshold are described based on the realistic coupled-channel potential CD Bonn + which allows the excitat…
Two-body scattering without angular-momentum decomposition
M. Rodriguez-Gallardo, A. Deltuva, E. Cravo +2
Two-body scattering is studied by solving the Lippmann-Schwinger equation in momentum space without angular-momentum decomposition for a local spin dependent short range interactio…
Three-body description of direct nuclear reactions: Comparison with the continuum discretized coupled channels method
A. Deltuva, A. M. Moro, E. Cravo +2
The continuum discretized coupled channels (CDCC) method is compared to the exact solution of the three-body Faddeev equations in momentum space. We present results for: i) elastic…