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From Oliver Janssen
We study the spectrum of meson masses in large N_c QCD_2 governed by the renowned ‘t Hooft integral equation. In [https://arxiv.org/abs/2409.11324] we generalize… -
From Oliver Janssen
The two-point correlation function of a massive field, measured along an observer's worldline in de Sitter (dS), decays exponentially in time. Meanwhile, every dS… -
From Oliver Janssen
Over 50 years ago, 't Hooft observed the similarity between the Feynman diagram expansion of a large N gauge theory and the topological expansion of a string… -
From Oliver Janssen
Conformal field theories can be seen as well-defined mathematical objects constrained by the bootstrap axioms. An interesting case is families of CFTs interpolating… -
From Oliver Janssen
To understand the structure of the Hilbert space of gravitational theories, an important and universal sector is given by the “large gauge” modes, which live… -
From Oliver Janssen
I will review some recent developments in cosmological correlators. Then I will highlight some recent results: first, on the non-gaussianities of inflationary scenarios… -
From Oliver Janssen
Entanglement entropy in quantum field theory is UV-divergent, which makes it a challenging quantity to analyze from an algebraic perspective. In this talk, I will…