Author: Jan
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Positivity Bounds on Effective Field Theories
Matteo Delladio – PhD student ETH Zurich Nearly two decades ago, Adams et al. (2006) demonstrated that the locality and unitarity of UV completions impose surprising constraints on the Wilson coefficients of otherwise healthy-looking, Lorentz-invariant effective field theories. Since then, the field has made significant progress and developed substantially. However, despite these advancements, we believe…
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Quantum Fields on Classical Computers
Dr. Tim Harris – Postdoc at ITP, ETH Zurich I will start by briefly attempting to answer the questions who? what? when? where? why? about lattice field theory. As you shall hopefully see, the lattice approach gives us a unique way to define quantum field theories without relying on perturbation theory. One of its major…
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Precision Higgs Physics
Prof. Dr. Charalampos Anastasiou – Professor at D-PHYS, ETH Zurich The Higgs particle is the subject of intense experimentation. I will discuss some of our expectations for what we can learn from studying it. Alongside experiments, theory is crucial to deciphering the meaning of Higgs signals. I will discuss how we can build the next…
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Language Models for the Simulation of Quantum Many-Body Systems
Prof. Dr. Juan Carrasquilla Alvarez – Associate Professor at D-PHYS, ETH Zurich In this talk, I will discuss our work on using models inspired by natural language processing in the realm of quantum many-body physics. I will demonstrate their utility in solving ground states of quantum Hamiltonians, particularly for ground states of arrays of Rydberg…
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Quantum field theory and strings: a challenge for modern particle physics
Dr. Johannes Brödel – Senior Scientist at D-PHYS, ETH Zurich While there are still numerous mathematical challenges for particle physicists when calculating scattering amplitudes for the explanation and confirmation of results measured at modern particle accelerators, the theoretical development of quantum field theory and even more string theory seems to be on hold: low-hanging fruits…
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Universality in long-range quantum systems
Prof. Dr. Nicolò Defenu – Assistant Professor at ETH Zurich Dive into the fascinating realm of quantum systems, the seminar will offer a panoramic view of long-range interactions. Starting with a encompassing tour of critical phenomena in systems featuring power-law interactions 1/r^α at α < d, we’ll unveil the intricate equilibrium scaling dependence on the…
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New Windows on the Universe through Gravitational Waves
Dr. Davide Racco – Postdoc at ETH and UZH In 2015, the first observations of the gravitational waves emitted by the merger of two black holes occurred 1.4 billion years ago, marked the first direct measurement of these spacetime ripples, and the beginning of the gravitational wave astronomy era. The measurements of the network of…
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The Physics of Randomness
Prof. Dr. Ramona Wolf – Junior Professor at University of Siegen (Germany) Can you define the term “randomness”? Do you think you know the difference between a classical and a quantum random number generator? Given the fundamental quantum nature of our universe, what even is a classical random number generator? Randomness is an idea that…
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Quench dynamics in topological and non-Hermitian systems
Karin Sim – PhD student at ETH Out of equilibrium systems are gaining increasing attention in the physics community due to their novel properties compared to their staticcounterpart. In particular, quantum quench is an established method to probe various aspects of out of equilibrium physics, both theoretically and experimentally. In this talk, I will present…
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The daily life of a mathematical physicist
Alessandro Tarantola – PhD student at ETH Have you ever wondered where “generalized eigenstates” live, if not in the Hilbert space? Do you often feel uncomfortable exchanging sums and integrals? Are you uneasy if you think something is ill-defined? If so, mathematical physics might be just right for you!This talk will be meant to familiarize…