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PRODID:Faculty of Science and Engineering - Research
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SUMMARY:GAnG Seminar: Klaas Parmentier (Cambridge) 
DESCRIPTION;ENCODING=QUOTED-PRINTABLE: NOTE: Pre talk intro for non experts starts at 2pm, with seminar starting at 2.30pm=0D=0A=
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Title: CFTs on Squashed Spheres and the Thermal Effective Action=0D=0A=
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Abstract: I will discuss CFTs on deformed three-spheres, in two complementary limits. For small deformations of the round sphere, the free energy can be computed using conformal perturbation theory techniques. For large squashing deformations of the Hopf fiber, the free energy is instead governed by a 2d thermal effective action. I will show how this effective action relates the free energy of different backgrounds, and I will present explicit results for its Wilson coefficients for free fields, the critical O(N) model, and holographic CFTs.
LOCATION:MB503
DTSTART:20261020T140000
DTEND:20261020T153000
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