Berechnung der nat�rlichen Linienbreite auf Grund der Diracschen Lichttheorie

Weisskopf, Victor F.; Wigner, E. P.

doi:10.1007/bf01336768

Cited by 1,786 publications

(808 citation statements)

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“…One of them is related to taking into account the sinks which represent the continuum electron energy reservoirs analogous to the HOMO and LUMO orbitals in the chemical systems [12,13,22] (see also references therein). These continuum manifolds are similar to those described by the Weisskopf-Wigner model [23,24]. These sinks serve as additions to the thermal reservoirs in ET.…”

Section: Introductionsupporting

confidence: 54%

Noise-assisted quantum electron transfer in photosynthetic complexes

et al. 2013

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Electron transfer (ET) between primary electron donors and acceptors is modeled in the photosystem II reaction center (RC). Our model includes (i) two discrete energy levels associated with donor and acceptor, interacting through a dipole-type matrix element and (ii) two continuum manifolds of electron energy levels ("sinks"), which interact directly with the donor and acceptor. Namely, two discrete energy levels of the donor and acceptor are embedded in their independent sinks through the corresponding interaction matrix elements. We also introduce classical (external) noise which acts simultaneously on the donor and acceptor (collective interaction). We derive a closed system of integro-differential equations which describes the non-Markovian quantum dynamics of the ET. A region of parameters is found in which the ET dynamics can be simplified, and described by coupled ordinary differential equations. Using these simplified equations, both sharp and flat redox potentials are analyzed. We analytically and numerically obtain the characteristic parameters that optimize the ET rates and efficiency in this system.

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Section: Introductionsupporting

confidence: 54%

Noise-assisted quantum electron transfer in photosynthetic complexes

et al. 2013

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“…In the Wigner-Weisskopf approximation [25], a two-component Schrödinger-like equation governs the evolution of ψ(t) in proper time t:…”

Section: Pseudoscalar Mesonsmentioning

confidence: 99%

CP Violation: Experimental Results in B Decays

Lanceri

2008

Springer Proceedings in Physics

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“…We may change the variable of integration from t 2 to t 0 2 ¼ t 2 À t 1 , ranging from À1 ! 0, associate a width G n with c n by introducing a factor expðG n t 0 2 Þ (see [35,36]) and obtain after completing both the integrations, the expression hf jS ð2Þ …”

Section: The Scattering Processmentioning

confidence: 99%

Scattering polarization in the presence of magnetic and electric fields

Sampoorna

Nagendra

et al. 2007

Journal of Quantitative Spectroscopy and Radiative Transfer

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The polarization of radiation by scattering on an atom embedded in combined external quadrupole electric and uniform magnetic fields is studied theoretically. Limiting cases of scattering under Zeeman effect, and Hanle effect in weak magnetic fields are discussed. The theory is general enough to handle scattering in intermediate magnetic fields (Hanle-Zeeman effect) and for arbitrary orientation of magnetic field. The quadrupolar electric field produces asymmetric line shifts, and causes interesting level-crossing phenomena either in the absence of an ambient magnetic field, or in its presence. It is shown that the quadrupolar electric field produces an additional depolarization in the Q=I profiles and rotation of the plane of polarization in the U=I profile over and above that arising from magnetic field itself. This characteristic may have a diagnostic potential to detect steady-state and time-varying electric fields that surround radiating atoms in solar atmospheric layers. r

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Berechnung der nat�rlichen Linienbreite auf Grund der Diracschen Lichttheorie

Cited by 1,786 publications

References 1 publication

Noise-assisted quantum electron transfer in photosynthetic complexes

Noise-assisted quantum electron transfer in photosynthetic complexes

CP Violation: Experimental Results in B Decays

Scattering polarization in the presence of magnetic and electric fields

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