نتایج جستجو برای: energy level crossing

تعداد نتایج: 1704429  

Journal: :Physical review 2021

A theoretical approach is proposed to describe the spin dynamics in defect color centers. The method explicitly considers ground state and excited of center as well dependent transitions involving state, an additional intermediate state. theory applied treat spin-dependent phenomena silicon carbide, namely, spin-$\frac{3}{2}$ silicon-vacancy centers, termed ${V}_{\mathrm{Si}}$ or V2 Theoretical...

Journal: :Journal of Physics A: Mathematical and General 2006

2005
FÁTIMA FERREIRA

As proposed by Irle and Gani in 2001, a process X is said to be slower in level crossing than a process Y if it takesX stochastically longer to exceed any given level than it does Y . In this paper, we extend a result of Irle (2003), relative to the level crossing ordering of uniformizable skip-free-to-the-right continuous-time Markov chains, to derive a new set of sufficient conditions for the...

2014
Elena Di Bernardino José León Tatjana Tchumatchenko

A variety of phenomena in physical and biological sciences can be mathematically understood by considering the statistical properties of level crossings of random Gaussian processes. Notably, a growing number of these phenomena demand a consideration of correlated level crossings emerging from multiple correlated processes. While many theoretical results have been obtained in the last decades f...

2007
Siti Zaharah Ishak

Safety levels at highway – rail level crossing locations continue to be a major concern at most of developing countries. Basically more than half of these accidents occur at public crossings, where active warning devices are in place and functioning properly. In most cases, accidents occurred when road users ignored the gates and passed through them or if they stopped on the tracks before the g...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه لرستان - دانشکده علوم پایه 1389

abstract part one: the electrode oxidation potentials of a series of eighteen n-hydroxy compounds in aqueous solution were calculated based on a proper thermodynamic cycle. the dft method at the level of b3lyp-6-31g(d,p) was used to calculate the gas-phase free energy differences ,and the polarizable continuum model (pcm) was applied to describe the solvent and its interaction with n-hydroxy ...

Journal: :Nature nanotechnology 2014
Eduardo J H Lee Xiaocheng Jiang Manuel Houzet Ramón Aguado Charles M Lieber Silvano De Franceschi

The physics and operating principles of hybrid superconductor-semiconductor devices rest ultimately on the magnetic properties of their elementary subgap excitations, usually called Andreev levels. Here we report a direct measurement of the Zeeman effect on the Andreev levels of a semiconductor quantum dot with large electron g-factor, strongly coupled to a conventional superconductor with a la...

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