Web19 Aug 2024 · The T = 0 version of this equation is the one that is employed in crossover physics in which case, upon employing the “scaled variables” and the relation {n}_s=\frac { {\left (2m {E}_F/ {\hslash}^2\right)}^ {3/2}} {3 {\pi}^2}, (2) (1) reduces to the number equation employed by Leggett [ 10] and many others. Webthe Bethe-Salpeter (BS) equation with momentum dependent quark mass functions, determined by the Dyson-Schwinger (DS) equation, is able to explain successfully many …
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The Bethe–Salpeter equation (named after Hans Bethe and Edwin Salpeter) describes the bound states of a two-body (particles) quantum field theoretical system in a relativistically covariant formalism. The equation was actually first published in 1950 at the end of a paper by Yoichiro Nambu, but without derivation. Due … See more The starting point for the derivation of the Bethe–Salpeter equation is the two-particle (or four point) Dyson equation $${\displaystyle G=S_{1}\,S_{2}+S_{1}\,S_{2}\,K_{12}\,G}$$ in momentum … See more In principle the interaction kernel K contains all possible two-particle-irreducible interactions that can occur between the two … See more • ABINIT • Araki–Sucher correction • Breit equation • Lippmann–Schwinger equation See more • BerkeleyGW – plane-wave pseudopotential method • ExC - plane wave • Fiesta - Gaussian all-electron method See more As for any homogeneous equation, the solution of the Bethe–Salpeter equation is determined only up to a numerical factor. This factor has to be … See more Many modern quantum field theory textbooks and a few articles provide pedagogical accounts for the Bethe–Salpeter equation's context and uses. See: • W. Greiner, J. Reinhardt (2003). Quantum Electrodynamics … See more Web25 Sep 2002 · The thermal excitations of the constituent quarks are evaluated by summing Matsubara frequencies. The resultant equation is used to study the thermal charmonium … elevate movement calgary
{rho} meson, Bethe-Salpeter equation, and the far infrared
Web13 Oct 2024 · In a molecular system the excitation of an electron is obtained by solving the so-called Bethe--Salpeter equation (BSE).Discretization of the Bethe--Salpeter equation leads to a dense non-Hermitian matrix eigenvalue problem with a special 2-by-2 block structure.In principle all excitation energies, i.e., all positive eigenvalues of the BSE … Web20 Aug 2024 · Using the intermediate representation and sparse modeling for two-particle objects on the Matsubara axis, we develop an algorithm that solves the Bethe-Salpeter … WebThe Bethe–Salpeter Equation (BSE) Customization of Bethe–Salpeter Equation (BSE) to Superconductivity Re-derivation of Some Well-Known Results of BCS Theory via BSE-Based Approach Generalized BCS Equations for Superconductors Characterized by … elevate morgan county indiana