80 citations · 818 across the 38 of their papers we have counts for
22 papers · 1 filter
The Love for Three Logarithms: Universal Running of Dynamical Love Numbers
Sebastian Garcia-Saenz
The static tidal Love numbers of black holes vanish in general relativity (GR), but are generically non-zero, and in fact 'run' logarithmically with scale, in more general theories…
Cosmological tensions in Proca-Nuevo theory
Hsu-Wen Chiang, Claudia de Rham, Sebastian Garcia-Saenz +1
We study the cosmological predictions of (extended) Proca-Nuevo theory. This vector-tensor theory enjoys stable homogeneous and isotropic solutions characterized by an effective da…
Loops in inflation with strongly non-geodesic motion
Sebastian Garcia-Saenz, Yizhou Lu, Sébastien Renaux-Petel
We study loop corrections in the effective field theory of inflation with imaginary speed of sound, which has been shown to provide an effective description of multi-field inflatio…
Cubic interactions for massless and partially massless spin-1 and spin-2 fields
Nicolas Boulanger, Sebastian Garcia-Saenz, Songsong Pan +1
We perform a complete classification of the consistent two-derivative cubic couplings for a system containing an arbitrary number of massless spin-1, massless spin-2, and partially…
To Half--Be or Not To Be?
Claudia de Rham, Sebastian Garcia-Saenz, Lavinia Heisenberg +2
It has recently been argued that half degrees of freedom could emerge in Lorentz and parity invariant field theories, using a non-linear Proca field theory dubbed Proca-Nuevo as a…
Cosmology of Extended Proca-Nuevo
Claudia de Rham, Sebastian Garcia-Saenz, Lavinia Heisenberg +1
Proca-Nuevo is a non-linear theory of a massive spin-1 field which enjoys a non-linearly realized constraint that distinguishes it among other generalized vector models. We show th…
Supersymmetric Partially Massless Fields and Non-Unitary Superconformal Representations
Noah Bittermann, Sebastian Garcia-Saenz, Kurt Hinterbichler +1
We find and classify the simplest SUSY multiplets on AdS which contain partially massless fields. We do this by studying representations of the , …
Degeneracy, matter coupling, and disformal transformations in scalar-tensor theories
Cédric Deffayet, Sebastian Garcia-Saenz
Degenerate scalar-tensor theories of gravity extend general relativity by a single degree of freedom, despite their equations of motion being higher than second order. In some case…
Revisiting non-Gaussianity in multifield inflation with curved field space
Sebastian Garcia-Saenz, Lucas Pinol, Sébastien Renaux-Petel
Recent studies of inflation with multiple scalar fields have highlighted the importance of non-canonical kinetic terms in novel types of inflationary solutions. This motivates a th…
A theory for multiple partially massless spin-2 fields
Nicolas Boulanger, Cédric Deffayet, Sebastian Garcia-Saenz +1
We revisit the problem of building consistent interactions for a multiplet of partially massless spin-2 fields in (anti-)de Sitter space. After rederiving and strengthening the exi…
Gauged Galileons
Sebastian Garcia-Saenz, Jonghee Kang, Riccardo Penco
We discuss the gauging of non-linearly realized symmetries as a method to systematically construct spontaneously broken gauge theories. We focus in particular on galileon fields an…
Hyper non-Gaussianities in inflation with strongly non-geodesic motion
Jacopo Fumagalli, Sebastian Garcia-Saenz, Lucas Pinol +2
Several recent proposals to embed inflation into high-energy physics rely on inflationary dynamics characterized by a strongly non-geodesic motion in negatively curved field space.…
Supersymmetric Partially Massless Fields and Non-Unitary Superconformal Representations
Sebastian Garcia-Saenz, Kurt Hinterbichler, Rachel A. Rosen
We find and classify the SUSY multiplets on AdS which contain partially massless fields. We do this by studying the non-unitary representations of the superc…
Consistent deformations of free massive field theories in the Stueckelberg formulation
Nicolas Boulanger, Cédric Deffayet, Sebastian Garcia-Saenz +1
Cohomological techniques within the Batalin-Vilkovisky (BV) extension of the Becchi-Rouet-Stora-Tyutin (BRST) formalism have proved invaluable for classifying consistent deformatio…
Flattened non-Gaussianities from the effective field theory of inflation with imaginary speed of sound
Sebastian Garcia-Saenz, Sébastien Renaux-Petel
Inflationary perturbations in multi-field theories can exhibit a transient tachyonic instability as a consequence of their non-trivial motion in the internal field space. When an e…
A multipole-expanded effective field theory for vortex ring-sound interactions
Sebastian Garcia-Saenz, Ermis Mitsou, Alberto Nicolis
The low-energy dynamics of a zero temperature superfluid or of the compressional modes of an ordinary fluid can be described by a simple effective theory for a scalar field---the s…
Conformal solids and holography
A. Esposito, S. Garcia-Saenz, A. Nicolis +1
We argue that a magnetic monopole in an asymptotically AdS space-time is dual to a -dimensional strongly coupled system in a solid state. In light of this, it would be r…
Classifying Galileon -form theories
Cédric Deffayet, Sebastian Garcia-Saenz, Shinji Mukohyama +1
We provide a complete classification of all abelian gauge invariant -form theories with equations of motion depending only on the second derivative of the field---the -form a…
First Sound in Holographic Superfluids at Zero Temperature
Angelo Esposito, Sebastian Garcia-Saenz, Riccardo Penco
Within the context of AdS/CFT, the gravity dual of an s-wave superfluid is given by scalar QED on an asymptotically AdS spacetime. While this conclusion is vastly supported by nume…
No-go for Partially Massless Spin-2 Yang-Mills
Sebastian Garcia-Saenz, Kurt Hinterbichler, Austin Joyce +2
There are various no-go results forbidding self-interactions for a single partially massless spin-2 field. Given the photon-like structure of the linear partially massless field, i…
A non-linear extension of the spin-2 partially massless symmetry
Sebastian Garcia-Saenz, Rachel A. Rosen
We investigate the possibility of extending the "partially massless" symmetry of a spin-2 field in de Sitter to nonlinear order. To do so, we impose a closure condition on the symm…
Behavior of perturbations on spherically symmetric backgrounds in multi-Galileon theory
Sebastian Garcia-Saenz
We consider multi-Galileon theory, the most general Galilean invariant theory with scalar fields linearly coupled to the trace of the stress-energy tensor. We study the behavio…