Once massive stars leave the main sequence, their evolution is largely set by mass loss through intense radiation-driven winds. Stellar multiplicity has been recognized as a ubiquitous feature: stars seldom live an effectively single life. In the advanced evolutionary stages of a massive binary, mass transfer via stellar winds can become significant and decide the […]

Scattering amplitudes play a central role in our understanding of the fundamental laws of nature. On the one hand they constitute the bridge between theory and experiments, allowing to compute predictions starting from a theoretical model. On the other, they shed light on the underlying properties of quantum field theories. To both ends, analytic results […]