# Colloquia Archive 2019

### Nonequilibrium dynamics of quantum systems—Leticia CUGLIANDOLO

TBA

### Protoplanetary Discs—Cathie CLARKE

TBA

### A Quantum Universe Before the Big Bang(s)?—Gabriele VENEZIANO

Abstract:

Modern inflationary cosmology avoids the shortcomings of the old hot big bang model by making crucial use of quantum phenomena occurring during inflation as well as at its end ...

### The first image of a black hole—Luciano REZZOLLA

I will discuss how the first image of a black hole was recently obtained by the Event Horizon Telescope collaboration. In particular, I will describe how modelling the dynamics of ...

### Collective behavior in animal groups: a statistical physics perspective—Irene GIARDINA

Abstract:

Many animal aggregations display collective patterns on the large scale, ultimately due to the interactions between the individuals in the group. Recent findings on flocks of birds and swarms ...

### Time-Energy Uncertainty Relations for Driven Dynamics and Adiabatic Quantum Computation—Tien KIEU

Abstract:

A new class of time-energy uncertainty relations is directly derived from the Schroedinger equations for time-dependent Hamiltonian H(t). Only the initial states and the Hamiltonians are required for ...

### Fun with Path Integrals—Neil TUROK

Abstract:

Feynman's path integral provides an elegant formulation of quantum physics, particularly suited to theories with continous symmetries, like gauge theories and general relativity. However, it has proven difficult ...

### Active Matter and Sustainability: from Plankton to Traffic Flow—Stephan HERMINGHAUS

Abstract:

The most important question of our time is whether, and how, we will be able to run our planet sustainably. Answering this question requires a deep understanding of the ...

### Black Holes, Quantum Gravity and Holography: a perspective from (2+1)-dim gravity—Alejandra CASTRO

ABSTRACT:

Gravity is intrinsically different from other physical forces. Gravity is geometry. This raises the fundamental question: how does geometry emerge from a quantum theory? Black holes have inspired revolutionary ...

### Clustering and Correlations in Fluctuating Environments—Mustansir BARMA

Abstract:

Shared histories lead to strong correlations. Thus, particles which find themselves in the same evolving environment have a tendency to cluster and approach an interesting state. This talk is ...

### The Surprising Simplicity of Scattering Amplitudes—Jacob Lewis BOURJAILY

Abstract:

Quantum field theory is the modern manifestation of "force equals mass times acceleration": it is the underlying, mathematical framework in which understand and describe physical laws today—from the ...

### Variational Quantum Algorithms—Jose Ignacio LATORRE

Small quantum computers are now a reality. They provide the instrument to test new ways to process information using quantum logic. We analyze novel ideas to build hybrid quantum algorithms ...

### The Limits of Cosmology—Joseph SILK

One of our greatest challenges in cosmology is understanding the origin of the structure of the universe, and in particular the formation of the galaxies. I will describe how the ...

### The mathematics of burger flipping—Jean-Luc THIFFEAULT

Ever since the dawn of time people have (literally) asked the question -- what is the most effective way to grill food? Timing is everything, since only one surface is exposed ...

### Testing General Relativity with Cosmological observations—Ruth DURRER

Abstract:

General Relativity (GR) is immensely successful. With the late discovery of gravitational waves from black hole and neutron star mergers, it has passed all the tests with flying colors ...

### Physics under the Gravitational Rainbow—Claudia DE RHAM

The recent direct detection of gravitational waves marks the beginning of a new era for physics and astronomy with an opportunity the probe gravity at its most fundamental level. I ...

### Tensor Network and Quantum Information Theory: Applications in Condensed Matter and High Energy Physics—Ignacio CIRAC

Abstract:

Certain Quantum Many-body states can be efficiently described in terms of tensor networks. Those include Matrix Product States (MPS), Projected Entangled-Pair Etates (PEPS), or the Multi-scale Entanglement Renormalization Ansatz ...

### Causal Sets, Discrete Gravity—Fay DOWKER

Quantum gravity is the name of a problem, not a theory. The problem is that we do not have a unified framework for fundamental physics in which both gravity and ...

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