Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Lazauskas, Rimantas"'
Determination of the proper power-counting scheme is an important issue for the systematic application of Chiral Effective Field Theory in nuclear physics. We analyze the cutoff dependence of three-nucleon observables (the neutron-deuteron scattering
Externí odkaz:
http://hdl.handle.net/10150/625299
http://arizona.openrepository.com/arizona/handle/10150/625299
http://arizona.openrepository.com/arizona/handle/10150/625299
We explore the description of the bound $^{19}$B isotope in terms of a $^{17}$B+n+n three-body system where the two-body subsystems $^{17}$B+n and neutron-neutron (nn) have virtual states close to the continuum. Dimensionless scaling functions for th
Externí odkaz:
http://arxiv.org/abs/2208.11604
We present a reaction model to describe the fast removal of the $\alpha$-particle core in $^8$He nucleus with eventual emission of four neutrons. The obtained four neutron energy distributions allows to explain the sharp low energy peak observed by s
Externí odkaz:
http://arxiv.org/abs/2207.07575
Publikováno v:
Physics Letters B833 (2022) 137367
We have investigated the possible existence of a $^7$H resonant state, considered as a five-body system consisting of a $^3$H core with four valence neutrons. To this aim, an effective n-$^3$H potential is constructed in order to reproduce the low en
Externí odkaz:
http://arxiv.org/abs/2207.04634
Publikováno v:
Physics Letters B 840, 137840 (2023)
We obtain the $s$- and $p$-wave low-energy scattering parameters for n$^3$H elastic scattering and the position of the $^4$H $J^\pi=1^-$ resonance using the pionless effective field theory at leading order. Results are extracted with three numerical
Externí odkaz:
http://arxiv.org/abs/2206.13321
Autor:
Lazauskas, Rimantas, Carbonell, Jaume
Publikováno v:
Physics Letters B 820 (2021) 136573
By solving the Faddeev equations for the \={p}pn system, we compute the antiproton-deuteron level shifts and widths for the lowest hydrogenic states as well as the corresponding \={p}d scattering lengths and volumes. The \={p}d annihilation densities
Externí odkaz:
http://arxiv.org/abs/2108.01630
Autor:
Lazauskas, Rimantas, Carbonell, Jaume
Publikováno v:
Frontiers in Physics 7:251 (2020)
The Faddeev Yakubovsky equations constitute a rigorous formulation of the quantum mechanical N body problem in the framework of non relativistic dynamics. They allow the exact solutions of the Schrodinger equation for bound and scattering states to b
Externí odkaz:
http://arxiv.org/abs/2002.05876
Publikováno v:
SciPost Physics Proceedings 2019
We consider the evolution of the neutron-nucleus scattering length for the lightest nuclei. We show that, when increasing the number of neutrons in the target nucleus, the strong Pauli repulsion is weakened and the balance with the attractive nucleon
Externí odkaz:
http://arxiv.org/abs/1912.05427
Autor:
Lazauskas, Rimantas, Carbonell, Jaume
We briefly summarize the main steps leading to the Faddeev-Yakubovsky equations in configuration space for N=3, 4 and 5 interacting particles.
Externí odkaz:
http://arxiv.org/abs/1908.04861
Publikováno v:
Phys. Rev. C 100, 011603 (2019)
We present a model description of the bound $^{17}$B isotope in terms of a $^{17}$B-n-n three-body system where the two-body subsystems $^{17}$B-n and n-n are unbound (virtual) states close to the unitary limit. The $^{17}$B ground state is well desc
Externí odkaz:
http://arxiv.org/abs/1907.01837