Stability of a two-electron system under pressure confinement: structural and quantum information theoretical analysis

S Mondal, A Sadhukhan, K Sen… - Journal of Physics B …, 2023 - iopscience.iop.org
The stability of a two-electron Zee system trapped inside an impenetrable spherical cavity is
analyzed using an explicitly correlated multi-exponent Hylleraas-type basis set in the …

Bound and resonance states near the critical charge region in two-electron atoms

LG Jiao, RY Zheng, A Liu, HE Montgomery Jr, YK Ho - Physical Review A, 2022 - APS
The critical nuclear charge Z c of the two-electron atoms below which the ground state
transforms into a shape resonance and the critical stability of the system around Z c have …

Complete critical bound region of the generalized exponential cosine screened Coulomb potential

XH Ji, YZ Zhang, HE Montgomery Jr… - Journal of Physics A …, 2024 - iopscience.iop.org
Complete critical bound region of the generalized exponential cosine screened Coulomb
potential - IOPscience Skip to content IOP Science home Accessibility Help Search Journals …

Stabilization method with the relativistic configuration-interaction calculation applied to two-electron resonances

P Amaro, JP Santos, S Bhattacharyya, TK Mukherjee… - Physical Review A, 2021 - APS
We applied a relativistic configuration-interaction (CI) framework to the stabilization method
as an approach for obtaining the autoionization resonance structure of heliumlike ions. In …

Electronic structure calculations of compressed Li atom using composite technique under Ritz variational framework

JK Saha, S Bhattacharyya… - International Journal of …, 2021 - Wiley Online Library
The structural properties of Li atom in 1 s 2 nl [n= 2–5, l= 0–4] state inside an impenetrable
cavity is studied. The system is assumed to be composed of two parts namely the core (1 s …

Critical stability of spatially confined Zee system

A Sadhukhan, KD Sen, JK Saha - Chemical Physics Letters, 2021 - Elsevier
The stability of spatially confined two-electron system (Zee) has been studied as a function
of continuously varying nuclear charge (Z) by adopting multi-exponent Hylleraas type basis …

Structural properties of Na atom under impenetrable spatial confinement

S Mondal, KD Sen, JK Saha - Canadian Journal of Physics, 2021 - cdnsciencepub.com
The structural properties and radial distributions of the valence electron in different excited
levels of Na atom (n= 3–5, l= 0–4; n and l being the principal and orbital angular momentum …

Quantum phase transition in symmetric quantum three-body system

A Sadhukhan, S Mondal, SK Nayek… - The European Physical …, 2021 - Springer
Bound state energy (E) and the position (E_r E r) and width (Γ Γ) of the first S symmetry
doubly excited Feshbach resonance state of various symmetrical three-body systems (XYY) …