Lisinopril is a drug of the angiotensin-converting enzyme (ACE) inhibitor class that is primarily used in the treatment of hypertension. During the scale-up of the lisinopril process, one unknown impurity was observed and is identified. The present work describes the origin, synthesis, characterization, and control of this impurity. This paper also describes the synthesis and characterization o...

Skew scattering on rare impurity configurations is shown to dominate the anomalous Hall effect in a 2D Rashba ferromagnet. The mechanism originates in scattering on rare impurity pairs separated by distances of the order of the Fermi wavelength. The corresponding theoretical description goes beyond the conventional noncrossing approximation. The mechanism provides the only contribution to the a...

Impurity transport has been investigated in the reactor-like conditions of the Alcator C-Mod divertor (divertor plasma density ≥1021 m-3, parallel heat flux in the SOL ≤0.5 GW-m-2). Trace amounts of the recycling impurity gases helium, neon, argon, and krypton were injected into plasmas. A residual gas analyzer that samples the private flux region of the divertor was used for divertor impurity ...

The one-dimensional problem of N particles with contact interaction in the presence of a tunable transmitting and reflecting impurity is investigated along the lines of the coordinate Bethe ansatz. As a result, the system is shown to be exactly solvable by determining the eigenfunctions and the energy spectrum. The latter is given by the solutions of the Bethe ansatz equations which we establis...

We study the competition between Kondo physics and dissipation within an Anderson model of a magnetic impurity level that hybridizes with a metallic host and is also coupled, via the impurity charge, to the displacement of a bosonic bath having a spectral density proportional to s. As the impurity-bath coupling increases from zero, the effective Coulomb interaction between two electrons in the ...

We study a two-impurity, two-channel Kondo model, focusing on the behavior near the limit of two independent impurities. We find that significant departures from the independent regime develop below a crossover temperature which scales approximately as the tenth power of a parity asymmetry. The one-impurity, two-channel Kondo model has been the object of much renewed interest recently [ i ] . T...

Using the bosonization technique, we have studied a spin-1/2 magnetic impurity in Heisenberg chain, and shown that the impurity specific heat and spin susceptibility have an anomalous temperature dependence. The temperature dependence of the impurity specific heat is: Cim(T ) ∼ T μ, μ = 4− 1 g (1− g)2, for gc < g < 1. The impurity spin susceptibility has the following temperature dependence: χi...

Motivated by a recent experiment (Catani J. et al., Phys. Rev. A, 85 (2012) 023623) we study breathing oscillations in the width of a harmonically trapped impurity interacting with a separately trapped Bose gas. We provide an intuitive physical picture of such dynamics at zero temperature, using a time-dependent variational approach. The amplitudes of breathing oscillations are suppressed by se...

Abstract We investigate the crossover of impurity-induced dynamics, in trapped one-dimensional Bose polarons subject to radio frequency (RF) pulses varying intensity, from an adiabatic a diabatic regime. Utilizing for either weak repulsive or attractive impurity-medium interactions, multitude polaronic excitations mode-couplings impurity-bath interaction with collective breathing motion bosonic...