Disorder-enabled Andreev reflection of a quantum Hall edge.

We develop a theory of charge transport along the quantum Hall edge proximitized by a superconductor. We note that generically Andreev reflection of an edge state is suppressed if translation invariance along the edge is preserved. Disorder in a "dirty" superconductor enables the Andreev reflection but makes it random.

Microwave Susceptibility Observation of Interacting Many-Body Andreev States.

Electrostatic charging affects the many-body spectrum of Andreev states, yet its influence on their microwave properties has not been elucidated. We developed a circuit quantum electrodynamics probe that, in addition to transition spectroscopy, measures the microwave susceptibility of different states of a semiconductor nanowire weak link with a single dominant (spin-degenerate) Andreev level. We found that the microwave susceptibility does not exhibit a particle-hole symmetry, which we qualitatively explain as an influence of Coulomb interaction.

Unrestricted Electron Bunching at the Helical Edge.

A quantum magnetic impurity of spin S at the edge of a two-dimensional time reversal invariant topological insulator may give rise to backscattering. We study here the shot noise associated with the backscattering current for arbitrary S. Our full analytical solution reveals that for S>1/2 the Fano factor may be arbitrarily large, reflecting bunching of large batches of electrons.

Dissipative and Hall Viscosity of a Disordered 2D Electron Gas.

Hydrodynamic charge transport is at the center of recent research efforts. Of particular interest is the nondissipative Hall viscosity, which conveys topological information in clean gapped systems. The prevalence of disorder in the real world calls for a study of its effect on viscosity.

[Antianginal activity of cardil and cordafen in patients with non-Q wave myocardial infarction].

The antianginal activity of Cardil, 240-360 mg/day, and Cordafen, 30-60 mg/day, was evaluated in 74 patients with non-Q wave acute myocardial infarction. Repeated 24-hour ECG monitoring was used as an objective tool for the evaluation of their therapeutical efficiency in two randomized groups. Unlike Cordafen, Cardil significantly reduced the average heart rate from 4.