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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
A voyage through undulating dark matter and the GUTs of u(48)
This talk will be split into two distinct halves: The first half will be based on the paper arxiv:2007.03662 and suggest that an interplay between microscopic and macroscopic physics can...
Dec 15, 2020
The Fully Constrained Formulation: local uniqueness and numerical accuracy
In this talk I will introduce the Fully Constrained Formulation (FCF) of General Relativity. In this formulation one has a hyperbolic sector and an elliptic one. The constraint equations are...
Dec 16, 2020
Quantum spacetime and deformed relativistic kinematics
In this seminar, I will consider a deformed kinematics that goes beyond special relativity as a way to account for possible low-energy effects of a quantum gravity theory that could...
Dec 16, 2020
Non-local quantum computation and holography
Relativistic quantum tasks are quantum computations which have inputs and outputs that occur at designated spacetime locations. Understanding which tasks are possible to complete, and what resources are required to...
Dec 16, 2020