34 citations · 94 across the 12 of their papers we have counts for
13 papers
Can QCD Axions Survive the Cosmological Constant Problem?
Carsten van de Bruck, C. P. Burgess, Adam Smith
Mechanisms that dynamically relax the vacuum energy offer a concrete way to approach the cosmological constant problem, but because relaxation is not confined to the vacuum energy…
The Serendipitous Axiodilaton: A Self-Consistent Recombination-Era Solution to the Hubble Tension
Adam Smith, Maria Mylova, Carsten van de Bruck +2
Axio-dilaton cosmology provides a minimal benchmark model for both Dark Matter (DM) and Dark Energy (DE) that is well motivated by fundamental physics. The axion and dilaton arise…
Dual is Different: EFTs, Axions and Nonpropagating Form Fields in Cosmology
C. P. Burgess, F. Quevedo
Scalar fields in 4D are known to have equivalent dual descriptions in terms of form-field gauge potentials, but this is often regarded as an arcane fact. Why use more complicated f…
Screened Axio-dilaton Cosmology: Novel Forms of Early Dark Energy
Adam Smith, Philippe Brax, Carsten van de Bruck +2
We study the cosmology of multi-field Dark Energy, using a well-motivated axio-dilaton model that contains the minimal number of fields to have the 2-derivative sigma-model interac…
Steven Weinberg: A Scientific Life
C. P. Burgess, F. Quevedo
Steven Weinberg was a giant of late 20th Century physics on whose shoulders we stand while groping for the science of the 21st Century. This article provides a too-brief summary of…
CMB Implications of Multi-field Axio-dilaton Cosmology
Adam Smith, Maria Mylova, Philippe Brax +3
Axio-dilaton models are among the simplest scalar-tensor theories that contain the two-derivative interactions that naturally compete at low energies with the two-derivative inter-…
4D de Sitter from String Theory via 6D Supergravity
C. P. Burgess, F. Muia, F. Quevedo
We obtain de Sitter (dS) solutions from controlled string-theory constructions. We review how minimal gauged chiral 6D supergravity evades standard dS no-go theorems by having a po…
On the EFT of Dyon-Monopole Catalysis
S. Bogojevic, C. P. Burgess
Monopole-fermion (and dyon-fermion) interactions provide a famous example where scattering from a compact object gives a cross section much larger than the object's geometrical siz…
Axio-Chameleons: A Novel String-Friendly Multi-field Screening Mechanism
Philippe Brax, C. P. Burgess, F. Quevedo
Scalar-tensor theories with the shift symmetries required by light scalars are well-explored modifications to GR. For these, two-derivative scalar self-interactions usually dominat…
Light Axiodilatons: Matter Couplings, Weak-Scale Completions and Long-Distance Tests of Gravity
Philippe Brax, Cliff Burgess, Fernando Quevedo
We consider the physical implications of very light axiodilatons motivated by a novel mechanism to substantially reduce the vacuum energy proposed in arXiv:2110.10352. We address t…
Yoga Dark Energy: Natural Relaxation and Other Dark Implications of a Supersymmetric Gravity Sector
C. P. Burgess, Danielle Dineen, F. Quevedo
We construct a class of 4D `yoga' (naturally relaxed) models for which the gravitational response of heavy-particle vacuum energies is strongly suppressed. The models contain three…
Who's Afraid of the Supersymmetric Dark? The Standard Model vs Low-Energy Supergravity
C. P. Burgess, F. Quevedo
Use of supergravity equations in astronomy and late-universe cosmology is often criticized on three grounds: (i) phenomenological success usually depends on the supergravity form f…
Axion Homeopathy: Screening Dilaton Interactions
C. P. Burgess, F. Quevedo
Cosmologically active Brans-Dicke (or dilaton) scalar fields are generically ruled out by solar system tests of gravity unless their couplings to ordinary matter are much suppresse…