Articles with "stark" as a keyword



Evidence of ac-Stark-shifted resonances in intense two-color circularly polarized laser fields

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Published in 2020 at "Physical Review A"

DOI: 10.1103/physreva.101.033405

Abstract: We report on the appearance of a structure at low energies in the photoelectron momentum distribution of the hydrogen atom exposed to two-color counterrotating bicircular laser fields. These structures, which arise due to ac-Stark-shifted resonances,… read more here.

Keywords: stark; shifted resonances; two color; laser fields ... See more keywords

Quantum criticality and Kibble-Zurek scaling in the Aubry-André-Stark model

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Published in 2024 at "Physical Review B"

DOI: 10.1103/physrevb.110.024207

Abstract: We explore quantum criticality and Kibble-Zurek scaling (KZS) in the Aubry-Andre-Stark (AAS) model, where the Stark field of strength $\varepsilon$ is added onto the one-dimensional quasiperiodic lattice. We perform scaling analysis and numerical calculations of… read more here.

Keywords: stark; quantum criticality; model; localization ... See more keywords

Stark-induced tunable phase transition in the two-photon Dicke-Stark model

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Published in 2025 at "Physical Review A"

DOI: 10.1103/vqnf-zd5w

Abstract: We theoretically investigate the superradiant phase transition (SPT) in the two-photon Dicke-Stark model, which incorporates both Rabi and Stark coupling. By introducing a Stark coupling term, we significantly reduce the critical Rabi coupling strength required… read more here.

Keywords: phase transition; stark; dicke stark; photon dicke ... See more keywords

New Method for Spectroscopic Diagnostics of Tokamak Edge Plasmas Based on a Peculiar Stark Broadening of Hydrogen or Deuterium Spectral Lines Emitted by the Injected Neutral Beam

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Published in 2024 at "IEEE Transactions on Plasma Science"

DOI: 10.1109/tps.2024.3367649

Abstract: We study the situation [practically relevant to the magnetic fusion machines, especially to International Thermonuclear Experimental Reactor (ITER)], where a highly energetic beam of hydrogen or deuterium atoms is injected into a strongly magnetized plasma.… read more here.

Keywords: stark; tex math; stark broadening; inline formula ... See more keywords

O4 -Symmetry-Based Non-Perturbative Analytical Calculations of the Effect of the Helical Trajectories of Electrons in Strongly Magnetized Plasmas on the Width of Hydrogen/Deuterium Spectral Lines

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Published in 2024 at "Symmetry"

DOI: 10.3390/sym16081009

Abstract: The effects of the helical trajectories of the perturbing electrons in magnetized plasmas on the dynamical Stark width of hydrogen or deuterium spectral lines have been studied analytically in our previous two papers—specifically in the… read more here.

Keywords: helical trajectories; stark; width; symmetry ... See more keywords

Enhanced optical Stark shifts in a single quantum dot embedded in an H1 photonic crystal nanocavity

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Published in 2017 at "Applied Physics Express"

DOI: 10.7567/apex.10.062002

Abstract: We demonstrate large optical Stark shifts in a single quantum dot embedded in a modified H1 photonic crystal nanocavity. We designed the nanocavity to simultaneously possess a high Q factor, a small mode volume, and… read more here.

Keywords: quantum; stark; shifts single; nanocavity ... See more keywords