30 citations · 88 across the 7 of their papers we have counts for
4 papers · 1 filter
Spontaneous generation of geometry in four dimensions
Jorge Alfaro, Domènec Espriu, Daniel Puigdomènech
We present the extension to 4 dimensions of an euclidean 2-dimensional model that exhibits spontaneous generation of a metric. In this model gravitons emerge as Goldstone bosons of…
Gravitational waves in the presence of a cosmological constant
José Bernabeu, Domènec Espriu, Daniel Puigdomènech
We derive the effects of a non-zero cosmological constant on gravitational wave propagation in the linearized approximation of general relativity. In this approximation we cons…
The emergence of geometry: a two-dimensional toy model
Jorge Alfaro, Domènec Espriu, Daniel Puigdomènech
We review the similarities between the effective chiral lagrangrian, relevant for low-energy strong interactions, and the Einstein-Hilbert action. We use these analogies to suggest…
Gravity as an effective theory
D. Espriu, D. Puigdomenech
Using as inspiration the well known chiral effective lagrangian describing the interactions of pions at low energies, in these lectures we review the quantization procedure of Eins…