829 citations · 2.8k across the 42 of their papers we have counts for
13 papers · 1 filter
Positivity bounds from multiple vacua and their cosmological consequences
Scott Melville, Johannes Noller
Positivity bounds - constraints on any low-energy effective field theory imposed by the fundamental axioms of unitarity, causality and locality in the UV - have recently been used…
Quantum Corrections to Generic Branes: DBI, NLSM, and More
Garrett Goon, Scott Melville, Johannes Noller
We study quantum corrections to hypersurfaces of dimension embedded in generic higher-dimensional spacetimes. Manifest covariance is maintained throughout the analysis and…
Horndeski under the quantum loupe
Lavinia Heisenberg, Johannes Noller, Jann Zosso
With recent constraints on the propagation speed of gravitational waves, the class of scalar-tensor theories has significantly been reduced. We consider one of the surviving models…
On scale-free extensions of massive (bi-)gravity
Giulia Cusin, Nima Khosravi, Johannes Noller
We discuss a scale-free model of bigravity, in which the mass parameter of the standard bigravity potential is promoted to a dynamical scalar field. This modification retains the g…
Generalised matter couplings in massive bigravity
Scott Melville, Johannes Noller
We investigate matter couplings in massive bigravity. We find a new family of such consistent couplings, including and extending known consistent matter couplings, and we investiga…
Strong-coupling scales and the graph structure of multi-gravity theories
James H. C. Scargill, Johannes Noller
In this paper we consider how the strong-coupling scale, or perturbative cutoff, in a multi-gravity theory depends upon the presence and structure of interactions between the diffe…