345 citations · 2.7k across the 66 of their papers we have counts for
67 papers
Evolving Dark Energy Is Vacuum Energy After All
Dong Ha Lee, Carsten van de Bruck, Eleonora Di Valentino +2
We investigate a physically motivated model of dynamical dark energy arising from the non-perturbative topological structure of the Quantum Chromodynamics (QCD) vacuum. The model i…
Non-linear Structure Formation in Planck+DESI Favoured Interacting Dark Energy Cosmologies
Yuejia Zhai, Carsten van de Bruck, Eleonora Di Valentino +2
Following our previous work constraining interacting dark energy (IDE) models, which showed their potential to alleviate the Hubble tension, in this work we investigate the non-lin…
A no-go theorem in bumblebee vector-tensor cosmology
Carsten van de Bruck, Mohammad Ali Gorji, Nils A. Nilsson +2
Bumblebee models, a class of vector-tensor theories in which a vector field acquires a nonzero vacuum expectation value that spontaneously breaks spacetime symmetries, are ubiquito…
Model-Independent Test of Prerecombination New Physics: Measuring the Sound Horizon with Gravitational Wave Standard Sirens and the Baryon Acoustic Oscillation Angular Scale
William Giarè, Jonathan Betts, Carsten van de Bruck +1
In a broad class of cosmological models where spacetime is described by a pseudo-Riemannian manifold, photons propagate along null geodesics, and their number is conserved, upcomin…
Bouncing cosmologies in the presence of a Dirac-Born-Infeld field
Mariam Campbell, Richard Daniel, Peter K. S. Dunsby +1
We perform a detailed dynamical system analysis for the behaviour of a Dirac-Born-Infeld (DBI) field in a spatially closed Friedmann-Lemaître-Robertson-Walker (FLRW) cosmology. The…
Scalar field dark matter with time-varying equation of state
Gaspard Poulot, Elsa M. Teixeira, Carsten van de Bruck +1
We propose a new model of scalar field dark matter interacting with dark energy. Adopting a fluid description of the dark matter field in the regime of rapid oscillations, we find…
Tightening the reins on non-minimal dark sector physics: Interacting Dark Energy with dynamical and non-dynamical equation of state
William Giarè, Yuejia Zhai, Supriya Pan +3
We present a comprehensive reassessment of the state of Interacting Dark Energy (IDE) cosmology, namely models featuring a non-gravitational interaction between Dark Matter (DM) an…
Gravitational waves in a cyclic Universe: resilience through cycles and vacuum state
Mariaveronica De Angelis, Adam Smith, William Giarè +1
We present a generalised calculation for the spectrum of primordial tensor perturbations in a cyclic Universe, making no assumptions about the vacuum state of the theory and accoun…
Hints of Neutrino Dark Matter scattering in the CMB? Constraints from the Marginalized and Profile Distributions
William Giarè, Adrià Gómez-Valent, Eleonora Di Valentino +1
We study scatter-like interactions between neutrinos and dark matter in light of different combinations of temperature, polarization and lensing data released by three independent…
Forecasts on interacting dark energy with standard sirens
Elsa M. Teixeira, Richard Daniel, Noemi Frusciante +1
We present the predictions with standard sirens at Gravitational Waves detectors, such as the Laser Interferometer Space Antenna (LISA) and the Einstein Telescope (ET), for interac…
Tracking the Multifield Dynamics with Cosmological Data: A Monte Carlo approach
William Giarè, Mariaveronica De Angelis, Carsten van de Bruck +1
We introduce a numerical method specifically designed for investigating generic multifield models of inflation where a number of scalar fields are minimally coupled to gravit…
Machine Learning and Structure Formation in Modified Gravity
Jonathan C. Betts, Carsten van de Bruck, Christian Arnold +1
In General Relativity approximations based on the spherical collapse model such as Press--Schechter theory and its extensions are able to predict the number of objects of a certain…
Extended Analysis of Neutrino-Dark Matter Interactions with Small-Scale CMB Experiments
Philippe Brax, Carsten van de Bruck, Eleonora Di Valentino +2
We explore an extension of the standard CDM model by including an interaction between neutrinos and dark matter, and making use of the ground based telescope data of the Cosmic…
Adiabatic and isocurvature perturbations in extended theories with kinetic couplings
Mariaveronica De Angelis, Carsten van de Bruck
The scalar field sector in low--energy effective field theories motivated by string theory often contains several scalar fields, some of which possess non--standard kinetic terms.…
New insights on -DM Interactions
Philippe Brax, Carsten van de Bruck, Eleonora Di Valentino +2
We revisit the possibility of using cosmological observations to constrain models that involve interactions between neutrinos and dark matter. We show that small-scale measurements…
A Consistent View of Interacting Dark Energy from Multiple CMB Probes
Yuejia Zhai, William Giarè, Carsten van de Bruck +3
We analyze a cosmological model featuring an interaction between dark energy and dark matter in light of the measurements of the Cosmic Microwave Background released by three indep…
Constraints on Late Time Violations of the Equivalence Principle in the Dark Sector
Cameron C. Thomas, Carsten van de Bruck
If dark energy is dynamical due to the evolution of a scalar field, then in general it is expected that the scalar is coupled to matter. While couplings to the standard model parti…
Scalar field dark matter and dark energy: a hybrid model for the dark sector
Carsten van de Bruck, Gaspard Poulot, Elsa M. Teixeira
Diverse cosmological and astrophysical observations strongly hint at the presence of dark matter and dark energy in the Universe. One of the main goals of Cosmology is to explain t…
Co-interacting dark matter and conformally coupled light scalars
Philippe Brax, Carsten van de Bruck, Sebastian Trojanowski
The increasing observational pressure on the standard cosmological model motivates analyses going beyond the paradigm of the collision-less cold dark matter (DM). Since the only cl…
Testing coupled dark energy models with their cosmological background evolution
Carsten van de Bruck, Jurgen Mifsud, Jack Morrice
We consider a cosmology in which dark matter and a quintessence scalar field responsible for the acceleration of the Universe are allowed to interact. Allowing for both conformal a…
Non-Gaussianity in multi-sound-speed disformally coupled inflation
Carsten van de Bruck, Tomi Koivisto, Chris Longden
Most, if not all, scalar-tensor theories are equivalent to General Relativity with a disformally coupled matter sector. In extra-dimensional theories such a coupling can be underst…
Reheating and preheating in the simplest extension of Starobinsky inflation
C. van de Bruck, P. Dunsby, L. E. Paduraru
The epochs of reheating and preheating are studied in a simple extension of the Starobinsky inflationary model, which consists of an --correction to the Einstein--Hilbert acti…
Vacuum Cherenkov radiation and bremsstrahlung from disformal couplings
Carsten van de Bruck, Clare Burrage, Jack Morrice
The simplest way to modify gravity is to extend the gravitational sector to include an additional scalar degree of freedom. The most general metric that can be built in such a theo…
Running of the Running and Entropy Perturbations During Inflation
Carsten van de Bruck, Chris Longden
In single field slow-roll inflation, one expects that the spectral index is first order in slow-roll parameters. Similarly, its running and the runni…