Mikael von Strauss

TL;DR: There is a persistent interest in extending cosmology beyond the standard model, $\Lambda$CDM as discussed by the authors, motivated by a range of apparently serious theoretical issues, involving such questions as the cosmological constant problem, the particle nature of dark matter, the validity of general relativity on large scales, the existence of anomalies in the CMB and on small scales, and the predictivity and testability of the inflationary paradigm.

TL;DR: In this article, the general cosmological evolution equations for a classically consistent theory of bimetric gravity were obtained and their analytic solutions were demonstrated to generically allow for a cosmic evolution.

TL;DR: In this paper, a review is dedicated to recent progress in the development of classical, in-teracting, massive spin-2 theories, with a focus on ghost-free bimetric theory.

TL;DR: In this paper, the absence of the Boulware-deser ghost in the Stuckelberg formulation of nonlinear massive gravity was shown to be consistent with existing consistency proofs.

TL;DR: In this article, the general cosmological evolution equations for a classically consistent theory of bimetric gravity were obtained and their analytic solutions were demonstrated to generically allow for a cosmic evolution starting out from a matter dominated FLRW universe while relaxing towards a de Sitter (anti-de Sitter) phase at late cosmic time.