We study a class of nonlocal systems which can be described by a local scalar field diffusing in an auxiliary radial dimension. As examples p-adic, open and boundary string field theory are considered on Minkowski, Friedmann–Robertson–Walker and Euclidean metric backgrounds. Starting from distribution-like initial field configurations which are constant almost everywhere, we construct exact and...

The discovery of postquantum nonlocality, i.e., the existence of nonlocal correlations that are stronger than any quantum correlations but nevertheless consistent with the no-signaling principle, has deepened our understanding of the foundations of quantum theory. In this work, we investigate whether the phenomenon of Einstein-Podolsky-Rosen steering, a different form of quantum nonlocality, ca...

We provide an example of nonlocal scalar electrodynamics that allows the same Higgs mechanism so successful in local field theory. The action is structured order to have exact solutions and equations motion for perturbations theory, at any perturbative order. Therefore, degrees freedom propagate unstable vacuum are reshuffled when stable replaced EoM, but their number does not change order, pro...