Results 11 to 20 of about 433,155 (229)

Non-Hermitian Hamiltonians and Quantum Transport in Multi-Terminal Conductors

open access: yesEntropy, 2020
We study the transport properties of multi-terminal Hermitian structures within the non-equilibrium Green’s function formalism in a tight-binding approximation.
Nikolay M. Shubin   +2 more
doaj   +1 more source

Resonances in Bianisotropic Layers

open access: yesIEEE Photonics Journal, 2018
This paper rigorously studies the resonant transmission of electromagnetic waves around embedded trapped modes in bianisotropic films and derives the dispersion relations, the embedded mode condition, and the coupling and tunneling of the evanescent wave
Faroq Razzaz, Majeed A. S. Alkanhal
doaj   +1 more source

Feshbach spectroscopy and scattering properties of ultracold Li+Na mixtures [PDF]

open access: yes, 2012
We have observed 26 interspecies Feshbach resonances at fields up to 2050 G in ultracold $^6$Li+$^{23}$Na mixtures for different spin-state combinations.
A. Trautmann   +9 more
core   +4 more sources

Eccentricity Evolution for Planets in Gaseous Disks [PDF]

open access: yes, 2002
We investigate the hypothesis that interactions between a giant planet and the disk from which it forms promote eccentricity growth. These interactions are concentrated at discrete Lindblad and corotation resonances.
Borderies N.   +4 more
core   +2 more sources

Parity Violation in Neutron Resonances in 107,109Ag [PDF]

open access: yes, 1999
Parity nonconservation (PNC) was studied in p-wave resonances in Ag by measuring the helicity dependence of the neutron total cross section. Transmission measurements on natural Ag were performed in the energy range 32 to 422 eV with the time-of-flight ...
Bowman, J D   +16 more
core   +3 more sources

A High-Resolution Terahertz Electric Field Sensor Using a Corrugated Liquid Crystal Waveguide

open access: yesCrystals, 2019
Liquid crystals (LCs) can always reflect variable optical properties in a broad terahertz (THz) band under external electric or magnetic fields. Based on the measurements of these varying properties, we can realize electric and magnetic field sensing ...
Lan-Lan Xu   +3 more
doaj   +1 more source

Variational Solutions for Resonances by a Finite-Difference Grid Method

open access: yesMolecules, 2021
We demonstrate that the finite difference grid method (FDM) can be simply modified to satisfy the variational principle and enable calculations of both real and complex poles of the scattering matrix.
Roie Dann   +6 more
doaj   +1 more source

Adiabatic theorems for quantum resonances [PDF]

open access: yes, 2006
We study the adiabatic time evolution of quantum resonances over time scales which are small compared to the lifetime of the resonances. We consider three typical examples of resonances: The first one is that of shape resonances corresponding, for ...
Froehlich, Juerg, Salem, Walid K. Abou
core   +3 more sources

Photoionization and Opacity

open access: yesAtoms, 2023
Opacity determines radiation transport through material media. In a plasma source, the primary contributors to atomic opacity are bound–bound line transitions and bound-free photoionization into the continuum.
Anil Pradhan
doaj   +1 more source

The Genuine Resonance of Full-Charm Tetraquarks

open access: yesUniverse, 2021
In this work, the genuine resonance states of full-charm tetraquark systems with quantum numbers JPC=0++,1+−,2++ are searched in a nonrelativistic chiral quark model with the help of the Gaussian Expansion Method.
Xiaoyun Chen
doaj   +1 more source

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