Results 1 to 10 of about 450 (166)

Unparticle contribution to the hydrogen atom ground state energy

open access: yesPhysics Letters B, 2016
In the present work we study the effect of unparticle modified static potentials on the energy levels of the hydrogen atom. By using Rayleigh–Schrödinger perturbation theory, we obtain the energy shift of the ground state and compare it with experimental
Michael F. Wondrak   +2 more
doaj   +3 more sources

Stochastic Electrodynamics: Renormalized Noise in the Hydrogen Ground-State Problem

open access: yesFrontiers in Physics, 2020
The hydrogen ground-state problem is a touchstone for the theory of Stochastic Electrodynamics. Recently, we have shown numerically and theoretically that the H-atom self-ionizes after a characteristic time.
Theo M. Nieuwenhuizen
doaj   +3 more sources

On the Stability of Classical Orbits of the Hydrogen Ground State in Stochastic Electrodynamics

open access: yesEntropy, 2016
De la Peña 1980 and Puthoff 1987 show that circular orbits in the hydrogen problem of Stochastic Electrodynamics connect to a stable situation, where the electron neither collapses onto the nucleus nor gets expelled from the atom.
Theodorus M. Nieuwenhuizen
doaj   +3 more sources

Theoretical and experimental studies on electronic structure and photophysical properties of biological active substituted hydroxyquinolin-2(1H)-one fluorophore

open access: yesChemical Physics Impact, 2023
In this study, the solvents effects on the photophysical characteristics of compound 1-(((4-bromophenyl)amino)(4-methoxyphenyl)methyl)-6-hydroxyquinolin-2(1H)-one (4BMHQ) was investigated using several polarity functions such as Kamlet's and Catalan's ...
N. Sunil Kumar   +3 more
doaj   +1 more source

Quantum computing simulation of the hydrogen molecular ground-state energies with limited resources

open access: yesOpen Physics, 2021
In this article, the hydrogen molecular ground-state energies using our algorithm based on quantum variational principle are calculated. They are calculated through a simulator since the system of the present study (i.e., the hydrogen molecule) is ...
Abu-Nada Ali
doaj   +1 more source

Measurement and Analysis of Atomic Relaxation Time in Active Hydrogen Atomic Clocks

open access: yesChinese Journal of Magnetic Resonance, 2022
The atomic relaxation time of a hydrogen atomic clock is the time required for atomic system after the selected state removing the atoms of the ground state hyperfine energy level (F = 0, mF = 0) and (F = 1, mF = −1) state to change from the (F = 1, mF =
LIANG Yue, XIE Yong-hui, CHEN Peng-fei
doaj   +1 more source

A Rydberg hydrogen beam for studies of stimulated deexcitation [PDF]

open access: yesEPJ Web of Conferences, 2022
We present a Rydberg hydrogen beamline developed to commission techniques of stimulated deexcitation for application in antihydrogen experiments at CERN’s Antiproton Decelerator.
Wolz Tim   +9 more
doaj   +1 more source

nl-Selective Classical Charge-Exchange Cross Sections in Be4+ and Ground State Hydrogen Atom Collisions

open access: yesAtoms, 2022
Charge-exchange cross sections in Be4+ + H(1s) collisions are calculated using the three-body classical trajectory Monte Carlo method (CTMC) and the quasi-classical trajectory Monte Carlo method of Kirschbaum and Wilets (QCTMC) for impact energies ...
Iman Ziaeian, Károly Tőkési
doaj   +1 more source

On the ground state of the Dirac hydrogen atom under a minimal-length assumption

open access: yesResults in Physics, 2021
We point out an erroneous handling in the literature regarding corrections to the ground state energy of the Dirac hydrogen atom related to the presence of a minimal length.
Anis Ben Dhahbi
doaj   +1 more source

Structure optimization for parameterized quantum circuits [PDF]

open access: yesQuantum, 2021
We propose an efficient method for simultaneously optimizing both the structure and parameter values of quantum circuits with only a small computational overhead. Shallow circuits that use structure optimization perform significantly better than circuits
Mateusz Ostaszewski   +2 more
doaj   +1 more source

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