The electromagnetic fine-structure constant in primordial nucleosynthesis revisited

UG Meißner, BC Metsch, H Meyer - The European Physical Journal A, 2023 - Springer
We study the dependence of the primordial nuclear abundances as a function of the
electromagnetic fine-structure constant α, keeping all other fundamental constants fixed. We …

[PDF][PDF] Comparative study of α-α interaction potentials constructed using various phenomenological models

A Awasthi, O Sastri - Turkish Journal of Physics, 2024 - journals.tubitak.gov.tr
In this paper, we have made a comparative study of α-α scattering using different
phenomenological models like Morse, double Gaussian, double Hulthén, Malfliet-Tjon, and …

Probing nuclear observables via primordial nucleosynthesis

UG Meißner, BC Metsch - The European Physical Journal A, 2022 - Springer
We study the dependence of primordial nuclear abundances on fundamental nuclear
observables such as binding energies, scattering lengths, neutron lifetime, etc. by varying …

A study of the fine-structure constant dependence of radiative capture in Halo-EFT

UG Meißner, BC Metsch, H Meyer - The European Physical Journal A, 2024 - Springer
We study the fine structure constant dependence of the rates of some selected radiative
capture reactions within the framework of so-called Halo Effective Field Theory in order to …

Constructing inverse scattering potentials for charged particles using a reference potential approach

O Sastri, A Sharma, A Awasthi - Physical Review C, 2024 - APS
An accurate way to incorporate long-range Coulomb interaction alongside short-range
nuclear interaction has been a challenge for theoretical physicists. In this paper, we propose …

Lattice Effective Field Theory Simulations of Nuclei

D Lee - arXiv preprint arXiv:2501.03303, 2025 - arxiv.org
Lattice effective field theory applies the principles of effective field theory in a lattice
framework where space and time are discretized. Nucleons are placed on the lattice sites …

Constructing Inverse Scattering Potentials for α-α System using Physics Informed Machine Learning

A Sharma, A Awasthi - 2023 - researchsquare.com
An accurate way to incorporate long-range Coulomb interaction alongside short-range
nuclear interaction remains challenging for theoretical physicists till date. Machine learning …

[PDF][PDF] Nuclear Lattice Effective Field Theory

UG Meißner - indico.ph.tum.de
Nuclear lattice effective field theory is a novel and powerful tool in the theory of nuclear
structure and reactions. I discuss a number of exciting results on topics such as nuclear …

[PDF][PDF] Nuclear Lattice Effective Field Theory: Status AD 2022

UG Meißner - 2022 - juser.fz-juelich.de
I discuss recent developments in nuclear lattice effective field theory, which is a premier tool
in the theory of nuclear structure and reactions. I discuss a number of exciting results on …