We numerically calculated angular momentum transfer processes in a dense particulate disk within Roche limit by global N -body simulations, up to N = 10, for parameters corresponding to a protolunar disk generated by a giant impact on a proto-Earth. In the simulations, both self-gravity and inelastic physical collisions are included. We first formalized expressions for angular momentum transfer...

A ‘‘which-path’’ ~welcher Weg! measurement necessarily destroys the fringes in a double-slit interference experiment. We show that in all instances one may attribute this destruction to a disturbance of the particle’s momentum by an amount equal to at least p\/2d , where d is the slit separation, in accordance with the uncertainty principle. However, this momentum transfer need not be local; th...

A recent publication [Phys. Rev. Lett. 92, 020404 (2004)] raises the possibility of momentum transfer from zero-point quantum fluctuations to matter, controlled by applied electric and magnetic fields. We present a Lorentz-invariant description using field-theoretical regularization techniques. We find no momentum transfer for homogeneous media, but predict a very small transfer for a Casimir-t...

The momentum transfer to absorbing particles is derived from the Lorentz force density without prior assumption of the momentum of light in media. We develop a view of momentum conservation rooted in the stress tensor formalism that is based on the separation of momentum contributions to bound and free currents and charges consistent with the Lorentz force density. This is in contrast with the ...

The local collision probability approximation (LCPA) method is introduced to compute molecular momentum transfer cross sections for comparison to ion mobility experiments. The LCPA replaces the (non-local) scattering trajectory used in the trajectory method to describe the collision process by a (local) collision probability function. This momentum transfer probability is computed using the exa...

The total momentum transfer from fast electron beams, like those employed in scanning transmission electron microscopy STEM , to plasmonic nanoparticles is calculated. The momentum transfer is obtained by integrating the electromagnetic forces acting on the particles over time. Numerical results for single and dimer metallic nanoparticles are presented, for sizes ranging between 2 and 80 nm. We...

Non-resonant inelastic scattering of hard x-rays from core-electron excitations is often called x-ray Raman scattering (XRS). In the low momentum transfer limit, the XRS spectrum is proportional to the x-ray absorption coefficient. However, additional information is available when the magnitude of the momentum transfer is increased in XRS experiments. In this paper we will review recent develop...

We analyze the predictions of perturbative QCD for pion photoproduction on the deuteron γD → π0D at large momentum transfer using the reduced amplitude formalism. The cluster decomposition of the deuteron wave function at small binding only allows the nuclear coherent process to proceed if each nucleon absorbs an equal fraction of the overall momentum transfer. Furthermore, each nucleon must sc...

We analyze the predictions of perturbative QCD for pion photoproduction on the deuteron γD → πD at large momentum transfer using the reduced amplitude formalism. The cluster decomposition of the deuteron wave function at small binding only allows the nuclear coherent process to proceed if each nucleon absorbs an equal fraction of the overall momentum transfer. Furthermore, each nucleon must sca...