Bethe-Salpeter equation


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Bethe-Salpeter equation

[′bāt·ə sal′pād·ər i′kwā·zhən]
(particle physics)
The relativistic analog of the integral form of the two-body Schrödinger equation, the two-particle interaction kernel being the analog of the potential.
References in periodicals archive ?
The Bethe-Salpeter Equation for the Collective Excitations in the Generalized Random Phase Approximation.
The weak decays of B, [B.sub.s], and [B.sub.c] into D-wave heavy-light mesons have been studied using Bethe-Salpeter equation [86].
Jing-Bin [81, 96] obtained the spectra of the HLM in the relativistic model from the Bethe-Salpeter equation using the Foldy-Wouthuysen transformation in his works.
Malik offers this monograph on BCS theory and superconduction, specifically, using the framework of the Bethe-Salpeter equation (BSE) to improve the theory's handling of high temperature superconduction, non-elemental superconductors, and heavy fermion superconductors (HFSCs).
We also include the effect of excitons for which we solve Bethe-Salpeter Equation. We calculate quantum efficiency (QE), the average number of excitons created by a single absorbed photon, in 3D arrays of Si29H36 quantum dots, NWs, and quasi 2D silicon nanofilms, all with both crystalline and amorphous core structures.
To this end we shall use the Bethe-Salpeter equation. It is well known that the conventional Bethe-Salpeter equation is with difficulties such as the relative time and relative energy problem which leads to the existence of nonphysical solutions in the conventional Bethe-Salpeter equation [7-32].
Thus with this space-time statistics from (210) we have the following reformulated relativistic Bethe-Salpeter equation:
We see that in this reformulated Bethe-Salpeter equation the relative time and relative energy problem of the conventional Bethe-Salpeter equations is resolved [7-32].
25 Bethe-Salpeter equation with seagull vertex potential
As regards the dynamical framework, to investigate these properties is concerned; many nonperturbative approaches, such as lattice QCD [5], chiral perturbation theory [6], QCD sum rules [7], heavy-quark effective theory [8], NRQCD [9], dynamical-equation based approaches like Schwinger-Dyson equation and Bethe-Salpeter equation (BSE) [10-15], and potential models [16] have been proposed to deal with the long distance property of QCD.
Bethe-Salpeter equation (BSE) [11,15,17-19] is a conventional approach in dealing with relativistic bound state problems.
Wang, "Spectrum for heavy quarkonia and mixture of the relevant wave functions within the framework of Bethe-Salpeter equation," Science in China G, vol.