3d CFTs on squashed spheres

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• Klaas Parmentier, University of Cambridge
• Thursday 27 November 2025, 13:00-14:00
• Potter room.

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We consider 2 limits in which the study of CFTs on curved 3-manifolds simplifies. In the limit of small deformations around the round 3-sphere, we can use conformal perturbation theory to show that the round 3-sphere extremizes the free energy. In the large deformation limit of circle bundles, where the circle becomes small, we can use thermal EFT to relate the free energy of different backgrounds, as we illustrate with free and holographic CFTs.

This talk is part of the Quantum Fields and Strings Seminars series.

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