Colloquia

Crystals are orderly states of matter in which particles with sizes ranging from sub-nanometer to micron are arranged in a periodic lattice. Crystalline solids epitomize the notion of rigidity, lying at the antipode of fluidity that is embodied by liquids. Accordingly, hybrid, exotic phases that combine crystallinity with (super-)fluidity ...

The distribution of galaxies is a power tool to test our cosmological model. In this talk I will discuss the different contributions that affect the observed distribution of galaxies. I will show that besides the standard density and redshift-space distortions, the number counts of galaxies is affected by gravitational lensing ...

In this talk, I will review various theories of baryogenesis ranging from electroweak baryogenesis to low- and high-scale leptogenesis together with their associated phenomenology. In the case of high-scale theories will discuss how gravitational waves can be used as a probe of such theories.

Hawking's black hole information paradox is a subject of long-standing debate that has inspired radical ideas about the interplay between gravity and quantum physics at a fundamental level. I will review the formulation of the paradox in the context of a semiclassical effective field theory of gravity and briefly ...

Amplitudes encode the probability of scattering processes, such as gluon scattering at the LHC. They harbor an intrinsic mathematical beauty that can be exploited to devise new calculational methods that are far more efficient than Feynman rules. Moreover, their structure also reveals surprising properties, such as relationships between observables of ...

The search for extraterrestrial life is one of the most exciting frontiers in science. First tentative clues were identified close to Earth in the form of the unusual interstellar object `Oumuamua and Unidentified Aerial Phenomena (UAP) in the Earth's atmosphere. The recently announced "Galileo Project" ushers the new frontier ...