Filters
5913 results
Timeless formulation of Wigner’s friend scenarios
At the heart of the quantum measurement problem lies the ambiguity about exactly when to use the unitary evolution of the quantum state and when to use the state-update in...
Dec 11, 2019
Deciphering the Landscape of Binary Black Hole Formation Channels
Merging compact objects encode a vast deal of information about their progenitor stellar systems, such as the types of galactic environments they were born in, the intricacies of stellar evolution...
Dec 12, 2019
Unitarization from geometry
Scattering amplitudes of massive spin-2 particles generically grow with energy and lead to violations of perturbative unitarity. One way to partially soften such amplitudes is with the infinite towers of...
Dec 17, 2019
What we do
Our mission is to advance understanding of the universe at the most fundamental level, stimulating the breakthroughs that could transform our future. We foster developments in foundational theoretical physics through...
Primordial SU(2), a new paradigm for Particle Cosmology
Primordial SU(2) gauge fields and axions can contribute to the physics of inflation. In this class of models, both the gauge field and axion acquire a VEV, which is P...
Jan 14, 2020
A deformation invariant of 1+1D SQFTs
The elliptic genus is a powerful deformation invariant of 1+1D SQFTs: if it is nonzero, then it protects the SQFT from admitting a deformation to one with spontaneous supersymmetry breaking...
Jan 14, 2020
The long arc of cosmology
Our ability to model cosmological observations has reached an awesome level, a tour de force of observational innovation, sophisticated statistical inference, and delicate numerical computation. There’s little doubt that the...
Jan 15, 2020
Accurately modelling extreme-mass-ratio inspirals: beyond the geodesic approximation
Recent observations of gravitational waves represent a remarkable success of our theoretical models of relativistic binaries. However, accurate models are largely restricted to binaries in which the two members have...
Jan 16, 2020
The search for quantum gravity: where are we, where do we go from here?
The search for quantum gravity: where are we, where do we go from here?
Jan 16, 2020