3 papers
hep-th2025
Vortex Fractional Fermion Number through Heat Kernel methods and Edge States
Sylvain Fichet, Rodrigo Fresneda, Lucas de Souza +1
Computing the vacuum expectation of fermion number operator on a soliton background is often challenging. A recent proposal in arXiv:2305.13606 simplifies this task by considering…
hep-th2025
Running Love Numbers and the Effective Field Theory of Gravity
Sergio Barbosa, Philippe Brax, Sylvain Fichet +1
Massive states produce higher derivative corrections to Einstein gravity in the infrared, which are encoded into operators of the Effective Field Theory (EFT) of gravity. These EFT…
hep-th2024
Gravity-Induced Photon Interactions and Infrared Consistency in any Dimensions
Pedro Bittar, Sylvain Fichet, Lucas de Souza
We compute the four-photon () operators generated by loops of charged particles of spin , , in the presence of gravity and in any spacetime dimension .…