Month: September 2022

Poster for Vlatko Vedral's QISS Virtual Seminar on 17 November at 4pm CET: Interference in QFT: detecting ghosts with phases

Vlatko Vedral
University of Oxford

Interference in quantum field theory: detecting ghosts with phases

I intend to discuss the implications of the principle of locality for interference in quantum field theory. As an example, I will consider the interaction of two charges via a mediating quantum field and the resulting interference pattern, in the Lorenz gauge. Using the Heisenberg picture, I will claim that detecting relative phases or entanglement between …

Vlatko Vedral
University of Oxford

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poster for the virtual seminar of Martin Plenio, 27 October at 5pm CEST testing quantum aspects of gravity at low energies

Martin Plenio
  Ulm University

Testing of Quantum Aspects of Gravity at Low Energies: Discussion of Experiment Aspects and Possible Loopholes

Testing the quantum character of weak forces such as gravity requires both exquisite experimental control of technology and careful design by theory of the experiment set-up. At the same time, the interpretation of experiments that probe the interface between quantum physics and gravity also mandates that we examine carefully all the assumptions, however innocuous, that …

Martin Plenio
  Ulm University

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Poster for Ivan Agullo's Virtual Seminar Talk title "Entanglement in Quantum Field Theory", 4pm CEST

Ivan Agullo
Louisiana State University

Entanglement in quantum field theory

It is well known that, even the simplest states within the simplest field theories, are highly entangled. The main support for this fact comes from calculations of entanglement entropy between a region of space and its complement. I find two uncomfortable facts in the calculation of such entropy: (i) The result is actually infinite, and …

Ivan Agullo
Louisiana State University

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