نتایج جستجو برای: secular terms
تعداد نتایج: 514060 فیلتر نتایج به سال:
We present a new convergent strong-coupling expansion for two-level atoms in external periodic fields, free of secular terms. As a first application, we show that the coherent destruction of tunneling is a third-order effect. We also present an exact treatment of the high-frequency region, and compare it with the theory of averaging. The qualitative frequency spectrum of the transition probabil...
We report on the determination of the Yarkovsky effect among Near Earth Asteroids (NEAs). The related recoil force is modeled through an empirical transverse acceleration resulting in a secular semimajor axis drift. For a successful determination we use a precise dynamical model including perturber asteroids and planetary relativistic terms. We found a few tens of object with a significant dete...
It was believed until very recently that a near-equatorial satellite would always keep up with the planet’s equator (with oscillations in inclination, but without a secular drift). As explained in Efroimsky and Goldreich (2004), this misconception originated from a wrong interpretation of a (mathematically correct) result obtained in terms of non-osculating orbital elements. A similar analysis ...
the problem of propagation of plane wave including body and surface waves propagating in a transversely isotropic half-space with a depth-wise axis of material symmetry is investigated in details. using the advantage of representation of displacement fields in terms of two complete scalar potential functions, the coupled equations of motion are uncoupled and reduced to two independent equations...
This paper analyses public conflicts over school policies that seek to advance Lesbian, Gay, Bisexual and Transgender (LGBT) equality. It focuses in particular on where Muslims, who protest LGBT-inclusive policies, become racialised as other secular national/Western values. Growing attention has been paid the arguments used by majority minority religious groups publicly counter education. In th...
A nonsecular medical anthropology insists on the ways medicine and science have constituted 'the secular' itself through the 'secular self'-how medical knowing has been used to craft the secular political subject. As James Boon noted, too often in social theory, "religion gets safely tucked away-restricted theoretically to 'meaning' rather than power" (1998:245). The authors of the six articles...
results: “Regarding girls, only for the entire sample, these is a secular decrease in the duration of physical inactivity”: This is unclear: girls versus entire sample? • This has now been amended. This sentence has now been clarified (pp. 2-3). Abstract: conclusions: younger cohort (1998-2000): should this not be (2008-2010)? • This has now been amended (p. 3, Line 7). conclusions: younger coh...
We construct a secular theory of a coplanar system of N-planets not involved in strong mean motion resonances, and which are far from collision zones. Besides the point-to-point Newtonian mutual interactions, we consider the general relativity corrections to the gravitational potential of the star and the innermost planet, and also a modification of this potential by the quadrupole moment and t...
We acknowledge the superb research assistance of Martin Kanz. We are also greatly indebted to Luis Bértola, Michael Clemens, John Coatsworth, and Yael Hadass for their help in constructing the underlying data base for other projects with Williamson. We are also grateful to them and to Abstract Most countries in the periphery specialized in the export of just a handful of primary products for mo...
We study the kinetics of the distribution function for charged particles of hard momentum in scalar QED. The goal is to understand the effects of infrared divergences associated with the exchange of quasistatic magnetic photons in the relaxation of the distribution function. We begin by obtaining a kinetic transport equation for the distribution function for hard charged scalars in a perturbati...
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