Alberto Rozas-Fernandez

@uclm.es

Assistant Professor/Departamento de Física
Universidad de Castilla-La Mancha

Alberto Rozas-Fernandez


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https://researchid.co/arozasfdez

EDUCATION

PhD in Theorical Physics

RESEARCH, TEACHING, or OTHER INTERESTS

Physics and Astronomy
21

Scopus Publications

1034

Scholar Citations

11

Scholar h-index

12

Scholar i10-index

Scopus Publications

  • Euclid I. Overview of the Euclid mission
    Y. Mellier, Abdurro’uf, J. A. Acevedo Barroso, A. Achúcarro, J. Adamek, et al.
    Astronomy and Astrophysics, 2025
    The current standard model of cosmology successfully describes a variety of measurements, but the nature of its main ingredients, dark matter and dark energy, remains unknown. Euclid is a medium-class mission in the Cosmic Vision 2015–2025 programme of the European Space Agency (ESA) that will provide high-resolution optical imaging, as well as near-infrared imaging and spectroscopy, over about 14 000 deg2 of extragalactic sky. In addition to accurate weak lensing and clustering measurements that probe structure formation over half of the age of the Universe, its primary probes for cosmology, these exquisite data will enable a wide range of science. This paper provides a high-level overview of the mission, summarising the survey characteristics, the various data-processing steps, and data products. We also highlight the main science objectives and expected performance.
  • Kinetic coupled tachyon: A dynamical system analysis
    Francesco Pace, Alberto Rozas-Fernández, Özgen Tunç Türker
    Physics of the Dark Universe, 2025
  • Euclid: Constraining linearly scale-independent modifications of gravity with the spectroscopic and photometric primary probes*
    N. Frusciante, F. Pace, V. F. Cardone, S. Casas, I. Tutusaus, et al.
    Astronomy and Astrophysics, 2024
    Context. The future Euclid space satellite mission will offer an invaluable opportunity to constrain modifications to Einstein’s general relativity at cosmic scales. In this paper, we focus on modified gravity models characterised, at linear scales, by a scale-independent growth of perturbations while featuring different testable types of derivative screening mechanisms at smaller non-linear scales. Aims. We considered three specific models, namely Jordan-Brans-Dicke, a scalar-tensor theory with a flat potential, the normal branch of Dvali-Gabadadze-Porrati (nDGP) gravity, a braneworld model in which our Universe is a four-dimensional brane embedded in a five-dimensional Minkowski space-time, and k-mouflage gravity, an extension of k-essence scenarios with a universal coupling of the scalar field to matter. In preparation for real data, we provide forecasts from spectroscopic and photometric primary probes by Euclid on the cosmological parameters and the additional parameters of the models, respectively, ωBD, Ωгc and ϵ2,0, which quantify the deviations from general relativity. This analysis will improve our knowledge of the cosmology of these modified gravity models. Methods. The forecast analysis employs the Fisher matrix method applied to weak lensing (WL); photometric galaxy clustering (GCph), spectroscopic galaxy clustering (GCsp) and the cross-correlation (XC) between GCph and WL. For the Euclid survey specifications, we define three scenarios that are characterised by different cuts in the maximum multipole and wave number, to assess the constraining power of non-linear scales. For each model we considered two fiducial values for the corresponding model parameter. Results. In an optimistic setting at 68.3% confidence interval, we find the following percentage relative errors with Euclid alone: for log10 ωBD, with a fiducial value of ωBD = 800, 27.1% using GCsp alone, 3.6% using GCph+WL+XC and 3.2% using GCph+WL+XC+GCsp; for log10 Ωгc, with a fiducial value of Ωгc = 0.25, we find 93.4, 20 and 15% respectively; and finally, for ϵ2,0 = −0.04, we find 3.4%, 0.15%, and 0.14%. From the relative errors for fiducial values closer to their ΛCDM limits, we find that most of the constraining power is lost. Our results highlight the importance of the constraining power from non-linear scales.
  • On a Quantum Theory of Relativity
    Pedro F. González-Díaz, Alberto Rozas-Fernández
    International Journal of Theoretical Physics, 2017
  • Cosmological constraints on a unified dark matter-energy scalar field model with fast transition
    Iker Leanizbarrutia, Alberto Rozas-Fernández, Ismael Tereno
    Physical Review D, 2017
  • Stability and emergence of gravitational waves in the quantum cosmic phantom models
    Alberto Rozas-Fernández
    General Relativity and Gravitation, 2017
  • K-essential covariant holography
    Alberto Rozas-Fernández
    General Relativity and Gravitation, 2014
  • Covariant holography of a tachyonic accelerating universe
    Alberto Rozas-Fernández
    European Physical Journal C, 2014
  • A gracious exit from the matter-dominated phase in a quantum cosmic phantom model
    Pedro F. González-Díaz, Alberto Rozas-Fernández
    Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 2014
  • Phenomenology of Unified Dark Matter Models with Fast Transition
    Alberto Rozas-Fernández, Marco Bruni, Ruth Lazkoz
    Springer Proceedings in Mathematics and Statistics, 2014
  • Phenomenological models for unified dark matter with fast transition
    Marco Bruni, Ruth Lazkoz, Alberto Rozas-Fernández
    Monthly Notices of the Royal Astronomical Society, 2013
  • Subquantum accelerating universe
    Applied Bohmian Mechanics from Nanoscale Systems to Cosmology, 2012
  • Kinetic k-essence ghost dark energy model
    Alberto Rozas-Fernández
    Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 2012
  • Subquantum Accelerating Universe
    Pedro González-Díaz, Alberto Rozas-Fernández
    Applied Bohmian Mechanics from Nanoscale Systems to Cosmology, 2012
  • Interacting non-minimally coupled canonical, phantom and quintom models of holographic dark energy in non-flat universe
    M. R. SETARE, ALBERTO ROZAS-FERNÁNDEZ
    International Journal of Modern Physics D, 2010
  • Interacting holographic tachyon model of dark energy
    ALBERTO ROZAS-FERNÁNDEZ, DAVID BRIZUELA, NORMAN CRUZ
    International Journal of Modern Physics D, 2010
  • Holographic interacting tachyon model
    Alberto Rozas-Fernández, David Brizuela, Norman Cruz
    Journal of Physics Conference Series, 2010
  • Holographic kinetic k-essence model
    Norman Cruz, Pedro F. González-Díaz, Alberto Rozas-Fernández, Guillermo Sánchez
    Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 2009
  • Holographic kinetic k-essence cosmologies
    Norman Cruz, Pedro F. González-Díaz, Alberto Rozas-Fernández, Guillermo Sánchez, Kerstin E. Kunze, et al.
    Aip Conference Proceedings, 2009
  • Quantum cosmic models and thermodynamics
    Pedro F González-Díaz, Alberto Rozas-Fernández
    Classical and Quantum Gravity, 2008
  • A dark energy multiverse
    Salvador Robles-Pérez, Prado Martín-Moruno, Alberto Rozas-Fernández, Pedro F González-Díaz
    Classical and Quantum Gravity, 2007

RECENT SCHOLAR PUBLICATIONS

  • Euclid. I. Overview of the Euclid mission
    Y Mellier, A Abdurroúf, JAA Barroso, A Achúcarro, J Adamek, R Adam, ...
    Astronomy & Astrophysics , 2025
    2025
    Citations: 744
  • Kinetic coupled tachyon: A dynamical system analysis
    F Pace, A Rozas-Fernández, ÖT Türker
    Physics of the Dark Universe 47, 101786 , 2025
    2025
    Citations: 2
  • Euclid. I: Overview of the Euclid mission
    M Seiffert, E Palazzi, M Saponara, M Szafraniec, A Tsyganov, A Short, ...
    Astronomy and astrophysics 697 (RWTH-2025-07997), A1 , 2025
    2025
  • Euclid
    N Null, Y Mellier, N Abdurro'Uf, JA Acevedo Barroso, A Achúcarro, ...
    ASTRONOMY & ASTROPHYSICS 697 , 2025
    2025
  • Euclid : Constraining linearly scale-independent modifications of gravity with the spectroscopic and photometric primary probes
    N Frusciante, F Pace, VF Cardone, S Casas, I Tutusaus, M Ballardini, ...
    Astronomy & Astrophysics 690, A133 , 2024
    2024
    Citations: 32
  • Euclid. I
    Euclid Collaboration, Y Mellier, AB Abdurro’uf, A JA
    Overview of the Euclid mission 5 , 2024
    2024
    Citations: 18
  • Quantum Accelerating Universe
    PF González-Díaz, A Rozas-Fernández
    Applied Bohmian Mechanics, 545-605 , 2019
    2019
  • Cosmological constraints on a unified dark matter-energy scalar field model with fast transition
    I Leanizbarrutia, A Rozas-Fernández, I Tereno
    Physical Review D 96 (2), 023503 , 2017
    2017
    Citations: 14
  • Stability and emergence of gravitational waves in the quantum cosmic phantom models
    A Rozas-Fernández
    General Relativity and Gravitation 49 (7), 93 , 2017
    2017
    Citations: 1
  • Testing cosmological structure formation in Unified Dark Matter-Energy models
    DML Castelao
    PQDT-Global , 2017
    2017
  • On a Quantum Theory of Relativity
    PF González-Díaz, A Rozas-Fernández
    International Journal of Theoretical Physics, 1-9 , 2017
    2017
  • K-essential covariant holography
    A Rozas-Fernández
    General Relativity and Gravitation 46 (12), 1825 , 2014
    2014
    Citations: 2
  • Covariant holography of a tachyonic accelerating universe
    A Rozas-Fernández
    The European Physical Journal C 74 (8), 3019 , 2014
    2014
    Citations: 2
  • A gracious exit from the matter-dominated phase in a quantum cosmic phantom model
    PF González-Díaz, A Rozas-Fernández
    Physics Letters B 733, 84-88 , 2014
    2014
    Citations: 5
  • Phenomenology of Unified Dark Matter models with fast transition
    A Rozas-Fernández, M Bruni, R Lazkoz
    Progress in Mathematical Relativity, Gravitation and Cosmology: Proceedings … , 2013
    2013
  • Phenomenological models for Unified Dark Matter with fast transition
    M Bruni, R Lazkoz, A Rozas-Fernández
    Monthly Notices of the Royal Astronomical Society 431 (3), 2907-2916 , 2013
    2013
    Citations: 30
  • Kinetic k-essence ghost dark energy model
    A Rozas-Fernández
    Physics Letters B 709 (4-5), 313-321 , 2012
    2012
    Citations: 73
  • Subquantum accelerating universe
    PF González-Diaz, A Rozas-Fernández
    Applied Bohmian Mechanics: From Nanoscale Systems to Cosmology, 507-560 , 2012
    2012
  • Modelos de energía oscura holográfica
    A Rozas-Fernández
    Universidad Autónoma de Madrid , 2011
    2011
  • Cosmic models and holography
    A Rozas Fernández
    2011
    Citations: 1

MOST CITED SCHOLAR PUBLICATIONS

  • Euclid. I. Overview of the Euclid mission
    Y Mellier, A Abdurroúf, JAA Barroso, A Achúcarro, J Adamek, R Adam, ...
    Astronomy & Astrophysics , 2025
    2025
    Citations: 744
  • Kinetic k-essence ghost dark energy model
    A Rozas-Fernández
    Physics Letters B 709 (4-5), 313-321 , 2012
    2012
    Citations: 73
  • Euclid : Constraining linearly scale-independent modifications of gravity with the spectroscopic and photometric primary probes
    N Frusciante, F Pace, VF Cardone, S Casas, I Tutusaus, M Ballardini, ...
    Astronomy & Astrophysics 690, A133 , 2024
    2024
    Citations: 32
  • Phenomenological models for Unified Dark Matter with fast transition
    M Bruni, R Lazkoz, A Rozas-Fernández
    Monthly Notices of the Royal Astronomical Society 431 (3), 2907-2916 , 2013
    2013
    Citations: 30
  • Holographic kinetic k-essence model
    N Cruz, PF Gonzalez-Diaz, A Rozas-Fernández, G Sánchez
    Physics Letters B 679 (4), 293-297 , 2009
    2009
    Citations: 27
  • Accelerating Hilbert–Einstein universe without dynamic dark energy
    PF González-Díaz, AR Fernández
    Physics Letters B 641 (2), 134-138 , 2006
    2006
    Citations: 21
  • Euclid. I
    Euclid Collaboration, Y Mellier, AB Abdurro’uf, A JA
    Overview of the Euclid mission 5 , 2024
    2024
    Citations: 18
  • A dark energy multiverse
    S Robles-Pérez, P Martin-Moruno, A Rozas-Fernández, ...
    Classical and Quantum Gravity 24 (10), F41-F45 , 2007
    2007
    Citations: 16
  • Quantum cosmic models and thermodynamics
    PF González-Díaz, A Rozas-Fernández
    Classical and Quantum Gravity 25 (17), 175023 , 2008
    2008
    Citations: 15
  • Cosmological constraints on a unified dark matter-energy scalar field model with fast transition
    I Leanizbarrutia, A Rozas-Fernández, I Tereno
    Physical Review D 96 (2), 023503 , 2017
    2017
    Citations: 14
  • Interacting holographic tachyon model of dark energy
    A Rozas-Fernandez, D Brizuela, N Cruz
    International Journal of Modern Physics D 19 (05), 573-586 , 2010
    2010
    Citations: 13
  • Holographic dilatonic dark energy model
    A Rozas-Fernández
    The European Physical Journal C 71 (1), 1536 , 2011
    2011
    Citations: 11
  • Interacting non-minimally coupled canonical, phantom and quintom models of holographic dark energy in non-flat universe
    MR Setare, A Rozas-Fernández
    International Journal of Modern Physics D 19 (12), 1987-2002 , 2010
    2010
    Citations: 6
  • A gracious exit from the matter-dominated phase in a quantum cosmic phantom model
    PF González-Díaz, A Rozas-Fernández
    Physics Letters B 733, 84-88 , 2014
    2014
    Citations: 5
  • Kinetic coupled tachyon: A dynamical system analysis
    F Pace, A Rozas-Fernández, ÖT Türker
    Physics of the Dark Universe 47, 101786 , 2025
    2025
    Citations: 2
  • K-essential covariant holography
    A Rozas-Fernández
    General Relativity and Gravitation 46 (12), 1825 , 2014
    2014
    Citations: 2
  • Covariant holography of a tachyonic accelerating universe
    A Rozas-Fernández
    The European Physical Journal C 74 (8), 3019 , 2014
    2014
    Citations: 2
  • Stability and emergence of gravitational waves in the quantum cosmic phantom models
    A Rozas-Fernández
    General Relativity and Gravitation 49 (7), 93 , 2017
    2017
    Citations: 1
  • Cosmic models and holography
    A Rozas Fernández
    2011
    Citations: 1
  • On the onset of the dark energy era
    PF González-Dıaz, A Rozas-Fernández
    The Problems of Modern Cosmology, 202 , 2008
    2008
    Citations: 1