2 papers
gr-qc2021
Gravitational field of scalar lumps in higher-derivative gravity
Luca Buoninfante, Yuichi Miyashita
We study the gravitational field sourced by localized scalar fields (lumps) in higher-derivative theories of gravity. By working in a static and spherically symmetric configuration…
hep-th2020
Generalized ghost-free propagators in nonlocal field theories
Luca Buoninfante, Gaetano Lambiase, Yuichi Miyashita +2
In this paper we present an iterative method to generate an infinite class of new nonlocal field theories whose propagators are ghost-free. We first examine the scalar field case a…