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Exploring alternatives to quantum nonlocality
In recent years, it has become increasingly well-known that nearly all the major no-go theorems in quantum foundations can be circumvented by violating a single assumption: the hidden variables (that...
Dec 09, 2020
Can we think time-symmetrically about causation?
We often say that quantum mechanics allows to calculate the probability of future events. In fact, quantum mechanics does not discriminate between predicting the future or postdicting the past. I...
Dec 10, 2020
Self-torque and frame nutation in binary black hole simulations
We investigate the precession of the spin of the smaller black hole in binary black hole simulations. By considering a sequence of binaries at higher mass ratios, we approach the...
Dec 10, 2020
Modular covariance for photons and gravitons in a Casimir box
The Casimir effect consists in a force between two conducting plates separated by a small distance due to the non-vanishing vacuum expectation value of the energy of the electromagnetic field...
Dec 10, 2020
Dynamics and observational traces of cosmological ultra-supercooled phase transitions
In recent years, there has been growing interest in cosmological first-order phase transitions in view of gravitational wave observations with space interferometers such as LISA. However, there is only limited...
Dec 11, 2020
Self-testing Bell inequalities from the stabiliser formalism and their applications
I will introduce a tool to construct self-testing Bell inequalities from the stabiliser formalism and present two applications in the framework of device-independent certification protocols. Firstly, I will show how...
Dec 11, 2020
Decoherence vs space-time diffusion: testing the quantum nature of gravity
Consistent dynamics which couples classical and quantum systems exists, provided it is stochastic. This provides a way to study the back-reaction of quantum systems on classical ones and has recently...
Dec 14, 2020
Generalized entropy in topological string theory
The Ryu Takayanagi formula identifies the area of extremal surfaces in AdS with the entanglement entropy of the boundary CFT. However the bulk microstate interpretation of the extremal area remains...
Dec 15, 2020
Cosmological tensions and how to ease them
Tensions between measurements in the early and the late universe could be the first hint of new physics beyond the cosmological standard model. In particular, the clustering of large scale...
Dec 15, 2020