نتایج جستجو برای: semi analytical method
تعداد نتایج: 1858925 فیلتر نتایج به سال:
The cosmic microwave background (CMB) temperature autocorrelations, induced by a magnetized adiabatic mode of curvature inhomogeneities, are computed with semianalytical methods. As suggested by the latest CMB data, a nearly scale-invariant spectrum for the adiabatic mode is consistently assumed. In this situation, the effects of a fully inhomogeneous magnetic field are scrutinized and constrai...
The Bethe–Salpeter equation for bound states of a fermion–antifermion pair in the instantaneous approximation for the involved interaction kernel is converted into an equivalent matrix eigenvalue problem with explicitly (algebraically) given matrices. PACS numbers : 11.10.St, 03.65.Ge ∗ E-mail address : [email protected] ‡ E-mail address : [email protected] † E-mail address : franz.schoebe...
The eigenvalue equation of a semirelativistic Hamiltonian composed of the relativistic kinetic term of spin-0 particles and static interactions is called spinless Salpeter equation. It is regarded as relativistic generalization of the nonrelativistic Schrödinger approach, or as approximation to the homogeneous Bethe–Salpeter equation in its instantaneous limit. The nonlocality inherent to this ...
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