4 papers · 1 filter
The divergence of Van Hove's model and its consequences
Fulvio Sbisà
We study a regularized version of Van Hove's 1952 model, in which a quantum field interacts linearly with sources of finite width lying at fixed positions. We show that the central…
On Léon van Hove's 1952 article on the foundations of Quantum Field Theory
Fulvio Sbisà
In 1952, Léon van Hove published an article, in French, with the title ``Les difficultés de divergences pour um modèle particulier de champ quantifié''. The article is frequently c…
Degravitation and the Cascading DGP Model
Fulvio Sbisà
We consider the 6D Cascading DGP model, a braneworld model which is a promising candidate to realize the phenomenon of the degravitation of vacuum energy. Focusing on a recently pr…
Thin limit of the 6D Cascading DGP model
Fulvio Sbisà
A thin limit description of the 6D Cascading DGP model is derived, starting from a configuration where both the codimension-1 and the codimension-2 branes are thick. Postulating th…