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hep-th2024
Introduction to Black Hole Thermodynamics
Edward Witten
These notes aim to provide an introduction to the basics of black hole thermodynamics. After explaining Bekenstein's original proposal that black holes have entropy, we discuss Haw…
hep-th2024★ 2 cited
Instantons and the Large N=4 Algebra
Edward Witten
We investigate the differential geometry of the moduli space of instantons on S^3 x S^1. Extending previous results, we show that a sigma-model with this target space can be expect…
hep-th2024★ 2 cited
Scale and Conformal Invariance in 2d Sigma Models, with an Application to N=4 Supersymmetry
Georgios Papadopoulos, Edward Witten
By adapting previously known arguments concerning Ricci flow and the c-theorem, we give a direct proof that in a two-dimensional sigma-model with compact target space, scale invari…