359 citations · 1.3k across the 23 of their papers we have counts for
23 papers
Cosmic microwave background temperature cosmography
C. J. A. P. Martins
The temperature-redshift relation, , is a cornerstone of the standard cosmological model, but it is violated in many physically motivated extensions thereof, e.g. wh…
Cosmologically Viable Solutions in Geometric Modified Gravity
P. A. G. Monteiro, C. J. A. P. Martins
The discovery of the accelerated expansion of the universe highlighted General Relativity's inability to naturally account for dark energy without invoking a finely tuned cosmologi…
Varying fundamental constants cosmography
C. J. A. P. Martins
Cosmography is a model-independent phenomenological approach to observational cosmology, relying on Taylor series expansions of physical quantities as a function of the cosmologica…
Validation of the ESPRESSO Wavelength Calibration Using Iodine Absorption Cell Spectra
Tobias M. Schmidt, Ansgar Reiners, Michael T. Murphy +3
High quality wavelength calibration is crucial for science cases like radial-velocity studies of exoplanets, the search for a possible variation of fundamental constants, and the r…
Probing fundamental physics using compact astrophysical objects
E. -A. Kolonia, C. J. A. P. Martins, Konstantinos N. Gourgouliatos
It is well known that alternative theories to the Standard Model allow -- and sometimes require -- fundamental constants, such as the fine-structure constant, , to vary in space…
A speed limit on tachyon fields from cosmological and fine-structure data
J. D. F. Dias, Nils Schöneberg, Léo Vacher +2
The rolling tachyon is a non-canonical scalar field model well motivated in string theory which naturally predicts variations of the fine-structure constant. Such variations can in…
Scaling solutions for current-carrying cosmic string networks
F. C. N. Q. Pimenta, C. J. A. P. Martins
Cosmic string networks are the best motivated relics of cosmological phase transitions, being unavoidable in many physically plausible extensions of the Standard Model. Most studie…
Current and future cosmological impact of microwave background temperature measurements
C. J. A. P. Martins, A. M. M. Vieira
The redshift dependence of the cosmic microwave background temperature, , is a key prediction of standard cosmology, but this relation is violated in many extensions…
Cosmic Microwave Background Signatures from Current-carrying Cosmic Strings
I. Yu. Rybak, C. J. A. P. Martins, Patrick Peter +1
We continue our studies of the evolution and cosmological consequences of current-carrying cosmic string networks, described by a charge-velocity-dependent one scale (CVOS) model.…
Cosmology and fundamental physics with the ELT-ANDES spectrograph
C. J. A. P. Martins, R. Cooke, J. Liske +20
State-of-the-art 19th century spectroscopy led to the discovery of quantum mechanics, and 20th century spectroscopy led to the confirmation of quantum electrodynamics. State-of-the…
News from the Swampland -- Constraining string theory with astrophysics and cosmology
Nils Schöneberg, Léo Vacher, J. D. F. Dias +2
Our current best guess for a unified theory of gravitation and quantum field theory (string theory) generically predicts a set of requirements for a consistently quantized theory,…
Runaway dilaton models: improved constraints from the full cosmological evolution
Léo Vacher, Nils Schöneberg, J. D. F. Dias +2
One of the few firm predictions of string theory is the existence of a massless scalar field coupled to gravity, the dilaton. In its presence, the value of the fundamental constant…
Constraints on extended Bekenstein models from cosmological, astrophysical, and local data
Léo Vacher, João F. Dias, Nils Schöneberg +5
Searching for variations of nature's fundamental constants is a crucial step in our quest to go beyond our current standard model of fundamental physics. If they exist, such variat…
New Horizons for Fundamental Physics with LISA
K. G. Arun, Enis Belgacem, Robert Benkel +138
The Laser Interferometer Space Antenna (LISA) has the potential to reveal wonders about the fundamental theory of nature at play in the extreme gravity regime, where the gravitatio…
Cosmology with the Laser Interferometer Space Antenna
Pierre Auclair, David Bacon, Tessa Baker +177
The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravita…
Exploring cosmic origins with CORE: mitigation of systematic effects
P. Natoli, M. Ashdown, R. Banerji +123
We present an analysis of the main systematic effects that could impact the measurement of CMB polarization with the proposed CORE space mission. We employ timeline-to-map simulati…
Exploring cosmic origins with CORE: gravitational lensing of the CMB
Anthony Challinor, Rupert Allison, Julien Carron +110
Lensing of the CMB is now a well-developed probe of large-scale clustering over a broad range of redshifts. By exploiting the non-Gaussian imprints of lensing in the polarization o…
Exploring Cosmic Origins with CORE: Survey requirements and mission design
J. Delabrouille, P. de Bernardis, F. R. Bouchet +200
Future observations of cosmic microwave background (CMB) polarisation have the potential to answer some of the most fundamental questions of modern physics and cosmology. In this p…
Exploring cosmic origins with CORE: effects of observer peculiar motion
C. Burigana, C. S. Carvalho, T. Trombetti +116
We discuss the effects on the CMB, CIB, and thermal SZ effect due to the peculiar motion of an observer with respect to the CMB rest frame, which induces boosting effects. We inves…
Exploring Cosmic Origins with CORE: Inflation
CORE Collaboration, Fabio Finelli, Martin Bucher +129
We forecast the scientific capabilities to improve our understanding of cosmic inflation of CORE, a proposed CMB space satellite submitted in response to the ESA fifth call for a m…
Exploring Cosmic Origins with CORE: Cosmological Parameters
Eleonora Di Valentino, Thejs Brinckmann, Martina Gerbino +125
We forecast the main cosmological parameter constraints achievable with the CORE space mission which is dedicated to mapping the polarisation of the Cosmic Microwave Background (CM…
Exploring Cosmic Origins with CORE: Extragalactic sources in Cosmic Microwave Background maps
G. De Zotti, J. Gonzalez-Nuevo, M. Lopez-Caniego +121
We discuss the potential of a next generation space-borne Cosmic Microwave Background (CMB) experiment for studies of extragalactic sources. Our analysis has particular bearing on…
Dark energy and Equivalence Principle constraints from astrophysical tests of the stability of the fine-structure constant
C. J. A. P. Martins, A. M. M. Pinho, R. F. C. Alves +3
Astrophysical tests of the stability of fundamental couplings, such as the fine-structure constant , are becoming an increasingly powerful probe of new physics. Here we discuss…