132 citations · 1.2k across the 41 of their papers we have counts for
23 papers · 1 filter
Higher-Dimensional Black Holes and Effective Field Theory
Daniel Glazer, Austin Joyce, Maria J. Rodriguez +3
We study the scalar tidal responses of spinning higher-dimensional black holes, and their effective field theory description. After constructing the effective field theory of a spi…
Fermions at finite density in the path integral approach
Alessandro Podo, Luca Santoni
We study relativistic fermionic systems in spacetime dimensions at finite chemical potential and zero temperature, from a path-integral point of view. We show how to properly…
Love Numbers for Rotating Black Holes in Higher Dimensions
Maria J. Rodriguez, Luca Santoni, Adam R. Solomon +1
We compute the tidal Love numbers and static response coefficients associated to several rotating black holes in higher dimensions, including Myers-Perry black holes, black rings,…
Dissipative Inflation via Scalar Production
Paolo Creminelli, Soubhik Kumar, Borna Salehian +1
We describe a new mechanism that gives rise to dissipation during cosmic inflation. In the simplest implementation, the mechanism requires the presence of a massive scalar field wi…
The connection between nonzero density and spontaneous symmetry breaking for interacting scalars
Alberto Nicolis, Alessandro Podo, Luca Santoni
We consider -symmetric scalar quantum field theories at zero temperature. At nonzero charge densities, the ground state of these systems is usually assumed to be a supe…
Soft theorems for boosts and other time symmetries
Lam Hui, Austin Joyce, Ilia Komissarov +3
We derive soft theorems for theories in which time symmetries -- symmetries that involve the transformation of time, an example of which are Lorentz boosts -- are spontaneously bro…
Integrating out beyond tree level and relativistic superfluids
Austin Joyce, Alberto Nicolis, Alessandro Podo +1
We revisit certain subtleties of renormalization that arise when one derives a low-energy effective action by integrating out the heavy fields of a more complete theory. Usually th…
Near-Zone Symmetries of Kerr Black Holes
Lam Hui, Austin Joyce, Riccardo Penco +2
We study the near-zone symmetries of a massless scalar field on four-dimensional black hole backgrounds. We provide a geometric understanding that unifies various recently discover…
Effective Field Theory for the Perturbations of a Slowly Rotating Black Hole
Lam Hui, Alessandro Podo, Luca Santoni +1
We develop the effective theory for perturbations around black holes with scalar hair, in two directions. First, we show that the scalar-Gauss--Bonnet theory, often used as an exam…
Large power spectrum and primordial black holes in the effective theory of inflation
Guillermo Ballesteros, Sebastián Céspedes, Luca Santoni
We study the generation of a large power spectrum, necessary for primordial black hole formation, within the effective theory of single-field inflation. The mechanisms we consider…
Ladder Symmetries of Black Holes: Implications for Love Numbers and No-Hair Theorems
Lam Hui, Austin Joyce, Riccardo Penco +2
It is well known that asymptotically flat black holes in general relativity have a vanishing static, conservative tidal response. We show that this is a result of linearly realized…
Black hole perturbations of massive and partially massless spin-2 fields in (anti) de Sitter spacetime
Rachel A. Rosen, Luca Santoni
We provide a systematic and comprehensive derivation of the linearized dynamics of massive and partially massless spin-2 particles in a Schwarzschild (anti) de Sitter black hole ba…
Static response and Love numbers of Schwarzschild black holes
Lam Hui, Austin Joyce, Riccardo Penco +2
We derive the quadratic action for the physical degrees of freedom of massless spin-0, spin-1, and spin-2 perturbations on a Schwarzschild--(A)dS background in arbitrary dimensions…
Stable wormholes in scalar-tensor theories
Gabriele Franciolini, Lam Hui, Riccardo Penco +2
We reconsider the issue of whether scalar-tensor theories can admit stable wormhole configurations supported by a non-trivial radial profile for the scalar field. Using a recently…
Effective Field Theory of Black Hole Quasinormal Modes in Scalar-Tensor Theories
Gabriele Franciolini, Lam Hui, Riccardo Penco +2
The final ringdown phase in a coalescence process is a valuable laboratory to test General Relativity and potentially constrain additional degrees of freedom in the gravitational s…
Behind Horndeski: Structurally Robust Higher Derivative EFTs
Luca Santoni, Enrico Trincherini, Leonardo G. Trombetta
Higher derivative scalar interactions can give rise to interesting cosmological scenarios. We present a complete classification of such operators that can yield sizeable effects wi…
The Effective Theory of Shift-Symmetric Cosmologies
Bernardo Finelli, Garrett Goon, Enrico Pajer +1
A shift symmetry is a ubiquitous ingredient in inflationary models, both in effective constructions and in UV-finite embeddings such as string theory. It has also been proposed to…
Soft Theorems For Shift-Symmetric Cosmologies
Bernardo Finelli, Garrett Goon, Enrico Pajer +1
We derive soft theorems for single-clock cosmologies that enjoy a shift symmetry. These so-called consistency conditions arise from a combination of a large diffeomorphism and the…
Weakly Broken Galileon Symmetry in Cosmology
Luca Santoni
In the present thesis, using an effective field theory point of view, we explore theories of single-field inflation where higher derivative operators become relevant, affecting in…
Stability of Geodesically Complete Cosmologies
Paolo Creminelli, David Pirtskhalava, Luca Santoni +1
We study the stability of spatially flat FRW solutions which are geodesically complete, i.e. for which one can follow null (graviton) geodesics both in the past and in the future w…
Constraints on Single-Field Inflation
David Pirtskhalava, Luca Santoni, Enrico Trincherini
Many alternatives to canonical slow-roll inflation have been proposed over the years, one of the main motivations being to have a model, capable of generating observable values of…
Large Non-Gaussianity in Slow-Roll Inflation
David Pirtskhalava, Luca Santoni, Enrico Trincherini +1
Canonical models of single-field, slow-roll inflation do not lead to appreciable non-Gaussianity, unless derivative interactions of the inflaton become uncontrollably large. We pro…
Inflation from Minkowski Space
David Pirtskhalava, Luca Santoni, Enrico Trincherini +1
We propose a class of scalar models that, once coupled to gravity, lead to cosmologies that smoothly and stably connect an inflationary quasi-de Sitter universe to a low, or even z…