Monopole versus center vortex through the lens of twisted partition functions

• Yuya Tanizaki

Room: Scott Logic Lecture Theatre - MCS0001 Proliferation of magnetic objects, such as monopoles and center vortices, provides intuitive explanations for color confinement. However, there does not exist local gauge-invariant definition of those objects in general, and the precise characterization of these confinement criteria is missing. In this talk, we propose the gauge-invariant characterization that distinguishes monopole and center-vortex condensation using the twisted partition functions with 1-form symmetry. After justifying why our proposal is reasonable, we then show that the gapped center-vortex condensed phase necessarily satisfies the monopole condensation using the technique of topological field theories. The talk is based on the recent work in collaboration with Yui Hayashi, https://arxiv.org/abs/2606.17708.

Energy-energy correlators at strong coupling

• Congkao Wen (Queen Mary University of London)

Room: Scott Logic Lecture Theatre - MCS0001 In this talk, I will describe energy-energy correlators (EEC) in N=4 super Yang-Mills theory at strong coupling. We will show that the EECs are deeply connected to the AdS Virasoro-Shapiro amplitude, a link that allows us to explicitly compute its strong-coupling expansion. We will present these explicit results and also discuss properties of the EECs at strong coupling.

TBA

• Tatsuhiro Misumi (Kindai University)

Room: Scott Logic Lecture Theatre - MCS0001

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• Ana-Maria Raclariu

Room: Scott Logic Lecture Theatre - MCS0001

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• Yasuyuki Hatsuda

Room: Scott Logic Lecture Theatre - MCS0001

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• Silvia Nagy

Room: Scott Logic Lecture Theatre - MCS0001

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• Hiromi Ebisu (Riken, iTHEMS)

Room: Scott Logic Lecture Theatre - MCS0001

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• Francesco Aprile (Complutense University of Madrid)

Room: Scott Logic Lecture Theatre - MCS0001

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• Kohtaro Kato

Room: Scott Logic Lecture Theatre - MCS0001

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• Adolfo Holguin

Room: Scott Logic Lecture Theatre - MCS0001

Hilbert Space of Jackiw–Teitelboim Gravity in a Closed Universe

• Masamichi Miyaji

Room: Scott Logic Lecture Theatre - MCS0001 In this talk, I will present a path-integral derivation of the Hilbert space of Jackiw–Teitelboim (JT) gravity in closed universes, in both de Sitter and anti-de Sitter spacetime. Through a careful analysis of the gravitational path integral, we evaluate the inner products exactly and show that the physical Hilbert space is naturally described as a space of coinvariant states equipped with a group-averaged inner product. Our results also have implications for the path-integral measure in configuration space. Furthermore, we propose a nonperturbative completion of this model that incorporates topology-changing processes and possesses a nontrivial finite-dimensional Hilbert space.

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• Laura Engelbrecht

Room: Scott Logic Lecture Theatre - MCS0001

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• Yuya Murakami

Room: Scott Logic Lecture Theatre - MCS0001

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• Ioana Coman

Room: Scott Logic Lecture Theatre - MCS0001

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• Han Yan

Room: Scott Logic Lecture Theatre - MCS0001

Feynman integrals, black holes, resurgent structure and the cosmohedron

• David Broadhurst

Room: Scott Logic Lecture Theatre - MCS0001 I discuss a family of massive Feynman integrals whose algebraic geometry involves an elliptic curve at two loops, a K3 surface at three loops, and a Calabi-Yau manifold at four loops. They were originally studied in the context of the magnetic moment of the electron. Remarkably, 4-loop integrals yield the areas of black holes in compactifications of 10-dimensional supergravity. At 2 and 3 loops, quasi-modularity leads to resurgence of structure at large and small momenta, which Daniele Dorigoni and I have extended to encompass large and small couplings in topological string theory. As a grace-note, I conclude with a simple example of resurgence that arises from an asymptotic study of combinatorics of the cosmohedron.

TBA

• Paul MacFadden

Room: Scott Logic Lecture Theatre - MCS0001

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• Rodolfo Russo

Room: Scott Logic Lecture Theatre - MCS0001