S. Fichet
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View article: On the black hole weak gravity conjecture and extremality in the strong-field regime
On the black hole weak gravity conjecture and extremality in the strong-field regime Open
A bstract We point out that the Weak Gravity Conjecture (WGC) implies that sufficiently small extremal black holes are necessarily in the strong-field regime of electrodynamics, and therefore probe the UV completion of the Maxwell sector. …
View article: Vortex fractional fermion number through heat kernel methods and edge states
Vortex fractional fermion number through heat kernel methods and edge states Open
Computing the vacuum expectation of a fermion number operator on a soliton background is often challenging. A recent proposal in [1] simplifies this task by considering the soliton in a bounded region and relating the η invariant, and thus…
View article: LHC as an Axion-Photon Collider
LHC as an Axion-Photon Collider Open
Assuming the existence of an axionlike particle (ALP), beams of relativistic particles emit fluxes of quasireal ALPs, analogous to the photon fluxes described by Weizsäcker-Williams-type approximations. Consequently, ALP-ALP and ALP-photon…
View article: Entanglement entropy and thermal phase transitions from curvature singularities
Entanglement entropy and thermal phase transitions from curvature singularities Open
A bstract We study holographic entanglement entropy and revisit thermodynamics and confinement in the dilaton-gravity system. Our analysis focuses on a solvable class of backgrounds that includes AdS and linear dilaton spacetimes as partic…
View article: Background-induced forces from dark relics
Background-induced forces from dark relics Open
A bstract Light particles quadratically coupled to nucleons induce macroscopic forces in matter. While a quantum effect always exists, an additional force occurs in the presence of a finite density of the light particles. We compute and cl…
View article: Holographic fluids from 5D dilaton gravity
Holographic fluids from 5D dilaton gravity Open
View article: Holography of broken U(1) symmetry
Holography of broken U(1) symmetry Open
A bstract We examine the Abelian Higgs model in ( d + 1)-dimensional anti-de Sitter space with an ultraviolet brane. The gauge symmetry is broken by a bulk Higgs vacuum expectation value triggered on the brane. We propose two separate Gold…
View article: Holography of linear dilaton spacetimes from the bottom up
Holography of linear dilaton spacetimes from the bottom up Open
The linear dilaton (LD) background is the keystone of a string-derived holographic correspondence beyond AdSd+1/CFTd. This motivates an exploration of the (d+1)-dimensional linear dilaton spacetime (LDd+1) and its holographic properties fr…
View article: Gravity-Induced Photon Interactions and Infrared Consistency in any Dimensions
Gravity-Induced Photon Interactions and Infrared Consistency in any Dimensions Open
We compute the four-photon ($F^4$) operators generated by loops of charged particles of spin $0$, $\frac{1}{2}$, $1$ in the presence of gravity and in any spacetime dimension $d$. To this end, we expand the one-loop effective action via th…
View article: Casimir Forces in CFT with Defects and Boundaries
Casimir Forces in CFT with Defects and Boundaries Open
We investigate the quantum forces occurring between the defects and/or boundaries of a conformal field theory (CFT). We propose to model imperfect defects and boundaries as localized relevant double-trace operators that deform the CFT. Our…
View article: Background-Induced Forces from Dark Relics
Background-Induced Forces from Dark Relics Open
Light particles quadratically coupled to nucleons induce macroscopic forces in matter. While a quantum effect always exists, an additional force occurs in the presence of a finite density of the light particles. We compute and classify suc…
View article: Holography of Broken U(1) Symmetry
Holography of Broken U(1) Symmetry Open
We examine the Abelian Higgs model in (d+1)-dimensional anti-de Sitter space with an ultraviolet brane. The gauge symmetry is broken by a bulk Higgs vacuum expectation value triggered on the brane. We propose two separate Goldstone boson e…
View article: Dressing in AdS spacetime and a conformal Bethe-Salpeter equation
Dressing in AdS spacetime and a conformal Bethe-Salpeter equation Open
We initiate the study of Dyson equations of perturbative quantum field theory in anti--de Sitter (AdS) and their consequences for large-$N$ conformal field theory (CFT). We show that the dressed one-particle AdS propagator features wave fu…
View article: Approximate symmetries and gravity
Approximate symmetries and gravity Open
There are strong reasons to believe that global symmetries of quantum theories cannot be exact in the presence of gravity. While this has been argued at the qualitative level, establishing a quantitative statement is more challenging. In t…
View article: Cosmological dark matter from a bulk black hole
Cosmological dark matter from a bulk black hole Open
We study the cosmology of a three-brane in a specific five-dimensional scalar-gravity (i.e. soft-wall) background, known as the linear dilaton background. We discover that the Friedmann equation of the brane-world automatically contains a …
View article: Continuum effective field theories, gravity, and holography
Continuum effective field theories, gravity, and holography Open
The work of
\nS. F. has been supported by the São Paulo Research
\nFoundation (FAPESP) under Grants No. 2011/11973,
\nNo. 2014/21477-2, and No. 2018/11721-4, by CAPES
\nunder Grant No. 88887.194785, and by the University of
\nCalifornia, R…
View article: Scalar-Mediated Quantum Forces between Macroscopic Bodies and Interferometry
Scalar-Mediated Quantum Forces between Macroscopic Bodies and Interferometry Open
View article: White Paper on Forward Physics, BFKL, Saturation Physics and Diffraction
White Paper on Forward Physics, BFKL, Saturation Physics and Diffraction Open
The goal of this white paper is to give a comprehensive overview of the rich field of forward physics. We discuss the occurrences of BFKL re-summation effects in special final states, such as Mueller–Navelet jets, jet–gap–jets, and heavy q…
View article: White Paper on Forward Physics, BFKL, Saturation Physics and Diffraction
White Paper on Forward Physics, BFKL, Saturation Physics and Diffraction Open
The goal of this white paper is to give a comprehensive overview of the rich field of forward physics. We discuss the occurrences of BFKL re-summation effects in special final states, such as Mueller–Navelet jets, jet–gap–jets, and heavy q…
View article: Cosmological Dark Matter from a Bulk Black Hole
Cosmological Dark Matter from a Bulk Black Hole Open
We study the cosmology of a three-brane in a specific five-dimensional scalar-gravity (i.e. soft-wall) background, known as the linear dilaton background. We discover that the Friedmann equation of the brane-world automatically contains a …
View article: On Continuum Effective Field Theories, Gravity and Holography
On Continuum Effective Field Theories, Gravity and Holography Open
We examine effective field theories (EFTs) with a continuum sector in the presence of gravity. We first explain, via arguments based on central charge and species scale, that an EFT with a free continuum cannot consistently couple to stand…
View article: Searching for anomalous top quark interactions with proton tagging and timing detectors at the LHC
Searching for anomalous top quark interactions with proton tagging and timing detectors at the LHC Open
View article: On holography in general background and the boundary effective action from AdS to dS
On holography in general background and the boundary effective action from AdS to dS Open
View article: The simplified likelihood framework
The simplified likelihood framework Open
We discuss the simplified likelihood framework as a systematic approximation scheme for experimental likelihoods such as those originating from LHC experiments. We develop the simplified likelihood from the Central Limit Theorem keeping th…
View article: Field Holography in General Background and Boundary Effective Action from AdS to dS
Field Holography in General Background and Boundary Effective Action from AdS to dS Open
We study quantum fields on an arbitrary, rigid background with boundary. We derive the action for a scalar in the holographic basis that separates the boundary and bulk degrees of freedom. From this holographic action, a relation between D…
View article: Dressing in AdS and a Conformal Bethe-Salpeter Equation
Dressing in AdS and a Conformal Bethe-Salpeter Equation Open
We initiate the study of Dyson equations of perturbative QFT in AdS and their consequences for large-N CFT. We show that the dressed one-particle AdS propagator features wavefunction renormalization and operator mixing, giving rise to fini…
View article: Continuum-mediated self-interacting dark matter
Continuum-mediated self-interacting dark matter Open
View article: Opacity from Loops in AdS
Opacity from Loops in AdS Open
View article: Effective field theory in AdS: Continuum regime, soft bombs, and IR emergence
Effective field theory in AdS: Continuum regime, soft bombs, and IR emergence Open
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View article: Reinterpretation of LHC Results for New Physics: Status and recommendations after Run 2
Reinterpretation of LHC Results for New Physics: Status and recommendations after Run 2 Open
We report on the status of efforts to improve the reinterpretation of searches and measurements at the LHC in terms of models for new physics, in the context of the LHC Reinterpretation Forum. We detail current experimental offerings in di…