Goryachev et al. [1] recently announced the detection of "two strongly significant events" in their Bulk Acoustic Wave High Frequency Gravitational Antenna. They claim many possibilities for cause these events, including high-frequency megahertz gravitational waves. We demonstrate events are not due to waves two reasons. 1) The inferred stochastic gravitational-wave background from implies ener...

Energy level separations in high-lying Rydberg states of neutral aluminium have been measured by a two-photon millimetre-wave resonance method to obtain n 2F–(n + 1) 2F intervals for n = 29–37 with an accuracy ±1 MHz. An Al atomic beam was excited stepwise by pulsed lasers, and the Rydberg atoms were detected by state-selective field ionization. From these data and previous optical data for the...

dar bayan-i ?istikhradj-i djayb-i yik daradja is a persian treatise by an anonymous author. the author’s purpose is to describe and explain a method for the determination of the sine of one degree according to ??sh ch?’s persian commentary on ulugh beg’s z?dj, and ????z?da’s arabic treatise entitled ris?la fi ?istikhradj djayb daradja wahida. kad?zada’s work, extant in several manuscripts, is, ...

This paper begins a series studying D-modules on the Feigin-Frenkel semi-infinite flag variety from the perspective of the Beilinson-Drinfeld factorization (or chiral) theory. Here we calculate Whittaker-twisted cohomology groups of Zastava spaces, which are certain finite-dimensional subvarieties of the affine Grassmannian. We show that such cohomology groups realize the nilradical of a Borel ...