F
Federico Piazza
Researcher at Aix-Marseille University
Publications - 69
Citations - 4584
Federico Piazza is an academic researcher from Aix-Marseille University. The author has contributed to research in topics: Dark energy & Effective field theory. The author has an hindex of 30, co-authored 64 publications receiving 4124 citations. Previous affiliations of Federico Piazza include Carnegie Mellon University & University of Portsmouth.
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Exploring gravitational theories beyond Horndeski
TL;DR: In this paper, a new class of generalized Galileons, called G 3, was proposed, which is a generalization of the Horndeski theories with only three propagating degrees of freedom.
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Dilatonic ghost condensate as dark energy
Federico Piazza,Shinji Tsujikawa +1 more
TL;DR: In this paper, a cosmologically viable model of "phantomized" dark energy can be constructed without violating the stability of quantum fluctuations, and the condition under which cosmological scaling solutions exist, starting from a general Lagrangian including the phantom type scalar field.
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The effective field theory of dark energy
TL;DR: In this paper, a universal description of dark energy and modified gravity is proposed, which includes all single-field models and includes covariant field operators, as well as the residual unbroken symmetries of spatial diffeomorphisms.
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Essential building blocks of dark energy
TL;DR: In this article, a minimal description of single field dark energy/modified gravity within the effective field theory formalism for cosmological perturbations was proposed, which encompasses most existing models.
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Exploring gravitational theories beyond Horndeski
TL;DR: In this article, the authors proposed a new class of generalized Horndeski Galileons (G$^3$ ) which are free from Ostrogradski instabilities.