Results 11 to 20 of about 415,608 (282)

Benchmarking Current Capabilities for the Generation of Excitation and Photoionisation Atomic Data

open access: yesGalaxies, 2018
The spectra currently emerging from modern ground- and space-based astronomical instruments are of exceptionally high quality and resolution. To meaningfully analyse these spectra, researchers utilise complex modelling codes to replicate the observations.
Catherine Ramsbottom   +6 more
doaj   +1 more source

Hyperfine-structure-resolved laser spectroscopy of many-electron highly charged ions

open access: yesCommunications Physics, 2023
Highly charged ions (HCIs) have opened up various research frontiers in fundamental physics, such as recent proposals for atomic clocks based on heavy HCIs with many electrons.
Naoki Kimura   +8 more
doaj   +1 more source

Constructing Electron-Atom Elastic Scattering Potentials Using Relativistic Coupled-Cluster Theory: A Few Case Studies

open access: yesAtoms, 2022
In light of the immense interest in understanding the impact of an electron on atoms in the low-energy scattering phenomena observed in laboratories and astrophysical processes, we propose an approach to construct potentials using relativistic coupled ...
Bijaya Kumar Sahoo
doaj   +1 more source

Estimating the Level of Uncertainty in Electron-Impact Excitation and Photoionisation Rates of Low-Ionised Stages of Ni Ions

open access: yesGalaxies, 2018
Ni iv lines can be used as diagnostics for temperature and density for various astrophysical objects. In addition, ionization of Ni2+ is one of the causes of the opacity in the interstellar medium.
Luis Fernández-Menchero   +2 more
doaj   +1 more source

Thermodynamics of trajectories and local fluctuation theorems for harmonic quantum networks

open access: yesNew Journal of Physics, 2015
We present a general method to undertake a thorough analysis of the thermodynamics of the quantum jump trajectories followed by an arbitrary quantum harmonic network undergoing linear and bilinear dynamics.
Simon Pigeon   +4 more
doaj   +1 more source

Out-of-equilibrium thermodynamics of quantum optomechanical systems

open access: yesNew Journal of Physics, 2015
We address the out-of-equilibrium thermodynamics of an isolated quantum system consisting of a cavity optomechanical device. We explore the dynamical response of the system when driven out of equilibrium by a sudden quench of the coupling parameter and ...
M Brunelli   +5 more
doaj   +1 more source

Towards the Provision of Accurate Atomic Data for Neutral Iron

open access: yesGalaxies, 2018
The rich emission and absorption line spectra of Fe I may be used to extract crucial information on astrophysical plasmas, such as stellar metallicities.
Andrew Conroy   +3 more
doaj   +1 more source

Entanglement classification via neural network quantum states

open access: yesNew Journal of Physics, 2020
The task of classifying the entanglement properties of a multipartite quantum state poses a remarkable challenge due to the exponentially increasing number of ways in which quantum systems can share quantum correlations.
Cillian Harney   +3 more
doaj   +1 more source

Testing the foundation of quantum physics in space via Interferometric and non-interferometric experiments with mesoscopic nanoparticles

open access: yesCommunications Physics, 2021
This perspective presents current and future possibilities offered by space technology for testing quantum mechanics, with a focus on mesoscopic superposition of nanoparticles and the potential of interferometric and non-interferometric experiments in ...
Giulio Gasbarri   +7 more
doaj   +1 more source

Excitons in Molecular Aggregates with L\'evy Disorder: Anomalous Localization and Exchange Broadening of Optical Spectra [PDF]

open access: yes, 2010
We predict the existence of exchange broadening of optical lineshapes in disordered molecular aggregates and a nonuniversal disorder scaling of the localization characteristics of the collective electronic excitations (excitons).
Eisfeld, A.   +3 more
core   +4 more sources

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