37 citations · 133 across the 9 of their papers we have counts for
9 papers
Gravitational-wave dispersion over inhomogeneous space-times: General relativity, screened theories of gravity and non-minimal dark energy
Nicola Menadeo, Serena Giardino, Miguel Zumalacárregui
Gravitational waves (GWs) are direct probes of cosmological gravity, sensitive to space-time inhomogeneities along their propagation. The presence of massive objects breaks homogen…
To bounce or not to bounce in generalized Proca theory and beyond
Lara Bohnenblust, Serena Giardino, Lavinia Heisenberg +1
It is notoriously difficult to construct a stable non-singular bouncing cosmology that avoids all possible instabilities throughout the entire evolution of the universe. In this wo…
First-order thermodynamics of Horndeski cosmology
Marcello Miranda, Serena Giardino, Andrea Giusti +1
We delve into the first-order thermodynamics of Horndeski gravity, focusing on spatially flat, homogeneous, and isotropic cosmologies. Our exploration begins with a comprehensive r…
First-order thermodynamics of scalar-tensor gravity
Serena Giardino, Andrea Giusti
The first-order thermodynamics of scalar-tensor theory is a novel approach that exploits the intriguing relationship between gravity and thermodynamics to better understand the spa…
Thermal stability of stealth and de Sitter spacetimes in scalar-tensor gravity
Serena Giardino, Andrea Giusti, Valerio Faraoni
Stealth solutions of scalar-tensor gravity and less-known de Sitter spaces that generalize them are analyzed regarding their possible role as thermal equilibria at non-zero tempera…
Past-directed scalar field gradients and scalar-tensor thermodynamics
Andrea Giusti, Serena Giardino, Valerio Faraoni
We refine and slightly enlarge the recently proposed first-order thermodynamics of scalar-tensor gravity to include gravitational scalar fields with timelike and past-directed grad…
Scalar field as a perfect fluid: thermodynamics of minimally coupled scalars and Einstein frame scalar-tensor gravity
Valerio Faraoni, Serena Giardino, Andrea Giusti +1
We revisit the analogy between a minimally coupled scalar field in general relativity and a perfect fluid, correcting previous identifications of effective temperature and chemical…
Peculiar thermal states in the first-order thermodynamics of gravity
Valerio Faraoni, Andrea Giusti, Sonia Jose +1
In the context of the recently proposed first-order thermodynamics of scalar-tensor gravity, we discuss the possibility of zero-temperature states of equilibrium other than Einstei…
Cosmological constraints on the Generalized Uncertainty Principle from modified Friedmann equations
Serena Giardino, Vincenzo Salzano
The Generalized Uncertainty Principle (GUP) has emerged in numerous attempts to a theory of quantum gravity and predicts the existence of a minimum length in Nature. In this work,…