Article
Astronomy & Astrophysics
Zahra Davari, Nima Khosravi
Summary: The current tensions in cosmological parameters raise doubts about the standard model of cosmology. This research investigates the relation between these tensions and scenarios beyond cold dark matter, specifically focusing on decaying dark matter. The findings suggest that decaying dark matter is not a promising candidate for addressing the cosmological tensions, except when it decays into cold dark matter and warm dark matter.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Alvaro de la Cruz Dombriz, Francisco Jose Maldonado Torralba, David F. Mota
Summary: The stable pseudo-scalar degree of freedom in the quadratic Poincare Gauge theory of gravity is identified as a suitable candidate for dark matter. The study determines the parameter space in the theory that can explain all predicted cold dark matter phenomena and constrains these parameters with astrophysical observations.
Article
Astronomy & Astrophysics
Eleonora Di Valentino, Nils A. Nilsson, Mu-In Park
Summary: This study proposes a renormalizable, higher derivative, Lorentz-violating quantum gravity model without ghost problems known as Hoava gravity. Furthermore, a Hoava gravity-based dark energy (HDE) model is proposed by identifying the additional contributions from Lorentz-violating terms as an effective energy-momentum tensor in Einstein equation. The results show a preference for non-flat universes in the cosmic microwave background, baryon acoustic oscillation, and supernova Ia data tests, aligning with the cosmic concordance model.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Keshav Ram Mishra, Shibesh Kumar Jas Pacif, Rajesh Kumar, Kazuharu Bamba
Summary: In this paper, an interacting dark energy model is studied by assuming gravitational interaction between matter fields and dark energy in a spatially homogeneous and isotropic Friedmann-Robertson-Walker space-time. The cosmic evolution is examined in the framework of an interacting scenario using a suitable ansatz for the scale factor parametrization of the Hubble parameter. The evolution of cosmological parameters, including deceleration parameter, energy density, pressure, and equation of state, is discussed in detail. Cosmological tests and analysis are performed to support the obtained interacting model. Additionally, the potential of the scalar field is reconstructed and the refined swampland conjecture is refuted using the equation of state and relationships between energy density, pressure, scalar field, and potential.
PHYSICS OF THE DARK UNIVERSE
(2023)
Article
Physics, Particles & Fields
Swagat S. Mishra, Varun Sahni
Summary: Non-canonical scalar fields with specific Lagrangian properties have the capability to exhibit dark matter-like behavior on small scales. By manipulating the potential term, the kinetic term can be utilized as dark matter while the potential term plays the role of dark energy later on. Simple potentials like V = V-0 coth(2) phi and Starobinsky-type potentials can unify dark matter and dark energy, and cascading dark energy models are also effective in this unification.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
Wilmar Cardona, M. A. Sabogal
Summary: Interesting discrepancies in cosmological parameters challenge the success of the ACDM model. The Hubble constant and matter clustering strength derived from various measurements are higher/lower than those inferred from the Cosmic Microwave Background (CMB) in the context of ACDM. In this study, we propose a Dark Energy (DE) model with an evolving equation of state and constant sound speed squared to address these discrepancies. By considering the impact of DE sound speed on gravitational potential evolution, we find good agreement between our results and low redshift probes, but tension with BBN constraints in the case of baryon energy density.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Physics, Multidisciplinary
Yu-Dai Tsai, Robert McGehee, Hitoshi Murayama
Summary: This paper presents new models based on QCD-like dark sectors to solve small-scale structure problems. By drawing analogies to the meson spectra in standard model QCD, the models introduce resonant self-interacting dark matter and discuss experimental probes for both setups. The paper also comments on the resonant self-interactions already built into SIMP and ELDER mechanisms.
PHYSICAL REVIEW LETTERS
(2022)
Article
Astronomy & Astrophysics
Emil Brinch Holm, Thomas Tram, Steen Hannestad
Summary: Decaying dark matter models can impact the predicted value of the Hubble constant and bridge the discrepancies between CMB inferences and local measurements. In this study, a reevaluation of the warm dark matter decaying model is performed, including the mass of the decaying species, and its ability to alleviate tensions in Hubble and sigma(8) is assessed. The model shows mild improvements but further research is required to fully evaluate its effectiveness.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Philip Bull, Martin White, Anze Slosar
Summary: This study investigates constraints on the behavior of dynamical dark energy in the matter-dominated era, finding that existing CMB and LSS measurements have constrained the dark energy equation of state during this period. It also examines how forthcoming galaxy surveys and 21cm intensity mapping instruments can further improve constraints in this regime.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Wenyu Wang, Wu-Long Xu, Bin Zhu
Summary: This study investigates the influence of the intrinsic interaction of dark matter self-scattering on structure formation. By introducing a simplified model and a new definition of velocity dependence, the impact of dark protons on cosmological structures is revealed.
Article
Physics, Particles & Fields
Vicente Vento
Summary: The study focuses on the existence of monopoles and dipoles in Kaluza-Klein multidimensional theories, with the observation that monopoles interact with time-dependent magnetic fields to radiate in a manner that is undetectable by conventional equipment. This suggests that Kaluza-Klein monopolium, if existent, could potentially be a candidate for a primordial dark matter constituent.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
Francesco Pace, Carlo Schimd
Summary: This study extends the analysis of Pace et al. by considering the virialization process in clustering dark-energy models. The research finds that five out of seven clustering dark-energy models can be statistically distinguished from the Lambda CDM model and the corresponding smooth dark-energy models in large-scale surveys.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Claudia de Rham, Scott Melville, Johannes Noller
Summary: Positivity bounds have been used to constrain scalar-tensor theories of dark energy, but coupling to matter fields has played a limited role. Demanding positivity when including interactions with standard matter fields leads to further constraints on the dark energy parameter space. Implementing these bounds as theoretical priors affects cosmological parameter constraints and shows that gravitational waves must travel superluminally on cosmological backgrounds in a standard UV completion.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Physics, Multidisciplinary
Jhonny A. Agudelo Ruiz
Summary: In this work, scalar field actions minimally and non-minimally coupled to gravity are analytically constructed, showing their equivalence to RRG in producing the same cosmological solutions. Additionally, the potential of combining a scalar field model for WDM with dynamical dark energy in the form of a running cosmological constant is also explored.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Astronomy & Astrophysics
David Benisty, Moshe M. Chaichian, Markku Oksanen
Summary: This passage studies the phenomenological implications of the Mimetic Tensor-Vector-Scalar theory (MiTeVeS). The theory extends the vector field model of mimetic dark matter by incorporating a scalar field, which is known to be ghost instability-free. When there is no interaction between the scalar field and the vector field, the obtained cosmological solution corresponds to the General Theory of Relativity (GR) with a minimally-coupled scalar field. However, introducing an interaction term between the scalar field and the vector field results in interesting dynamics.
PHYSICS OF THE DARK UNIVERSE
(2023)
Article
Astronomy & Astrophysics
Matteo Lucca, Nils Schoeneberg, Deanna C. Hooper, Julien Lesgourgues, Jens Chluba
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2020)
Article
Astronomy & Astrophysics
Thomas Hambye, Matteo Lucca, Laurent Vanderheyden
Article
Astronomy & Astrophysics
Matteo Lucca, Laura Sagunski
JOURNAL OF HIGH ENERGY ASTROPHYSICS
(2020)
Article
Astronomy & Astrophysics
Nils Schoneberg, Matteo Lucca, Deanna C. Hooper
Summary: This paper discusses how measuring spectral distortions of the cosmic microwave background can tightly constrain different inflation models, showing the importance of the combination of SD experiments and CMB anisotropy experiments in improving constraint power. Through numerical simulations, it is found that SDs can significantly enhance constraint power and increase the figure of merit.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Matteo Lucca, Laura Sagunski, Federico Guercilena, Christian M. Fromm
Summary: This paper establishes a simple toy model to study the gravitational dynamics of binary neutron star systems, validating the model through numerical simulations and spectral analysis, further exploring the source of low-frequency peaks in the gravitational wave power spectrum. Additionally, two relations between the initial properties of the system and the angular momentum of the post-merger remnant are presented.
JOURNAL OF HIGH ENERGY ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
Eleonora Di Valentino, Luis A. Anchordoqui, Ozgur Akarsu, Yacine Ali-Haimoud, Luca Amendola, Nikki Arendse, Marika Asgari, Mario Ballardini, Spyros Basilakos, Elia Battistelli, Micol Benetti, Simon Birrer, Francois R. Bouchet, Marco Bruni, Erminia Calabrese, David Camarena, Salvatore Capozziello, Angela Chen, Jens Chluba, Anton Chudaykin, Eoin O. Colgain, Francis-Yan Cyr-Racine, Paolo de Bernardis, Javier de Cruz Perez, Jacques Delabrouille, Jo Dunkley, Celia Escamilla-Rivera, Agnes Ferte, Fabio Finelli, Wendy Freedman, Noemi Frusciante, Elena Giusarma, Adria Gomez-Valent, Julien Guy, Will Handley, Ian Harrison, Luke Hart, Alan Heavens, Hendrik Hildebrandt, Daniel Holz, Dragan Huterer, Mikhail M. Ivanov, Shahab Joudaki, Marc Kamionkowski, Tanvi Karwal, Lloyd Knox, Suresh Kumar, Luca Lamagna, Julien Lesgourgues, Matteo Lucca, Valerio Marra, Silvia Masi, Sabino Matarrese, Arindam Mazumdar, Alessandro Melchiorri, Olga Mena, Laura Mersini-Houghton, Vivian Miranda, Cristian Moreno-Pulido, David F. Mota, Jessica Muir, Ankan Mukherjee, Florian Niedermann, Alessio Notari, Rafael C. Nunes, Francesco Pace, Andronikos Paliathanasis, Antonella Palmese, Supriya Pan, Daniela Paoletti, Valeria Pettorino, Francesco Piacentini, Vivian Poulin, Marco Raveri, Adam G. Riess, Vincenzo Salzano, Emmanuel N. Saridakis, Anjan A. Sen, Arman Shafieloo, Anowar J. Shajib, Joseph Silk, Alessandra Silvestri, Martin S. Sloth, Tristan L. Smith, Joan Sola Peracaula, Carsten van de Bruck, Licia Verde, Luca Visinelli, Benjamin D. Wandelta, Deng Wang, Jian-Min Wang, Anil K. Yadav, Weiqiang Yang
Summary: Current cosmological probes have confirmed the standard A Cold Dark Matter cosmological model with unprecedented accuracy, but tensions between different independent cosmological datasets have emerged. These tensions may indicate issues with the standard cosmological scenario and the potential need for new physics.
ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Lorenzo Piga, Matteo Lucca, Nicola Bellomo, Valenti Bosch-Ramon, Sabino Matarrese, Alvise Raccanelli, Licia Verde
Summary: This study investigates the impact of uncertainty in the accretion and radiation emission processes of primordial black holes (PBHs) on cosmological constraints. By considering the contribution of outflows, constraints on PBH abundance are derived for various accretion geometries, ionization models, and mass distributions using the Cosmic Microwave Background (CMB) as a probe.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Gaetan Facchinetti, Matteo Lucca, Sebastien Clesse
Summary: We find that the constraints on primordial black hole (PBH) abundance from cosmic microwave background (CMB) radiation are less strict than previously estimated by up to two orders of magnitude, based on a more realistic accretion model and conservative assumptions. This reopens the possibility that PBHs could explain the existence of dark matter, some LIGO-Virgo-KAGRA binary black hole mergers, and supermassive black holes.
Article
Astronomy & Astrophysics
Jose A. de Freitas Pacheco, Elias Kiritsis, Matteo Lucca, Joseph Silk
Summary: This paper proposes a phenomenological model regarding the survival of primordial black holes as a significant dark matter component, showing that cosmological and astrophysical constraints disappear under reasonable degrees of quasiextremality.
Article
Astronomy & Astrophysics
Tristan L. Smith, Matteo Lucca, Vivian Poulin, Guillermo F. Abellan, Lennart Balkenhol, Karim Benabed, Silvia Galli, Riccardo Murgia
Summary: By analyzing data from ACT DR4, SPT-3G 2018, Planck polarization, and restricted Planck temperature data, we found a 3.3 sigma preference for early dark energy (EDE) over ACDM. This marks the first time that a moderate preference for EDE has been reported for these combined CMB datasets including Planck polarization.
Article
Astronomy & Astrophysics
Matteo Lucca
Summary: In the effort to address the Hubble tension, it is necessary to consider models that can modify the expansion and thermal history of the Universe, while maintaining overall concordance between early and late-time observations. A multi-interacting dark energy model with two complementary interaction channels has been explored, showing potential in resolving the S-8 tension but ultimately unable to restore the overall concordance between early and late-time observations.
Article
Astronomy & Astrophysics
Matteo Lucca, Deanna C. Hooper
Article
Astronomy & Astrophysics
Matteo Lucca