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cond-mat.quant-gas2026
Casimir Sign Reversal from Finite-Range Bogoliubov Fluctuations
Fabrizio Canfora, Pablo Pais, Luigi Rosa
We study the zero-temperature Casimir effect of a three-dimensional Bose fluid with finite-range corrections to its Bogoliubov spectrum. Beyond the universal acoustic contribution…
hep-th2026
Examples of Gribov copies in the presence of planar boundaries, and an emergent boundary gauge invariance in Yang-Mills theory
David Dudal, Luigi Rosa, Sebbe Stouten
First, we explicitly construct zero-modes of the Yang-Mills Faddeev-Popov operator in the presence of two parallel plates, with either perfect electric (PEC) or perfect magnetic (P…