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6th ComHEP: Colombian Meeting on High Energy Physics

29 November 2021 to 3 December 2021
America/Bogota timezone

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Session

Astroparticles - Cosmology

2 Dec 2021, 08:00

Conveners

Astroparticles - Cosmology

  • Blanca Cañas (Universidad de Pamplona)
  • Alexander Moreno Briceño (Universidad Antonio Nariño)

Presentation materials

There are no materials yet.

  1. 72. Cosmology with Supernovae
    Santiago Gonzalez-Gaitan (CENTRA, Instituto Superior Tecnico)
    02/12/2021, 08:00
  2. 71. Astrophysics and beyond the Standard Model with the NOvA neutrino experiment
    Matthew Strait (University of Minnesota)
    02/12/2021, 08:30
  3. 73. Astroparticles, some efforts in Chiapas, Mexico
    Karen Salome Caballero Mora (UNACH)
    02/12/2021, 09:00
  4. 87. Modified gravity, generalized SU(2) Proca theory, and inflation
    Yeinzon Rodriguez Garcia
    02/12/2021, 09:45
    Cosmology / Astroparticles
    Regular Talk (15'+5')

    This talk will be split into three pieces. In the first part of the talk, I will introduce the common ideas surrounding the modified gravity proposals starting from their main motivation: Einstein gravity, despite all its success on the observational side, is an effective theory. In the second part of the talk, I will present the recent reconstruction of the generalized SU(2) Proca theory...

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  5. 97. Extended SU(2) Proca theory
    Carlos Nieto
    02/12/2021, 10:05
    Cosmology / Astroparticles
    Regular Talk (15'+5')

    In this work, we explore the construction of a vector-tensor theory with a SU(2) global symmetry in the vector sector as a proposal for a modified theory of gravity. We start with a general Lagrangian containing terms involving symmetric and antisymmetric combinations of the covariant derivatives of the field. Then, we study the degeneracy of the full theory to determine whether it can be...

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  6. 107. Anisotropic Scalar Field Dark Energy with a Disformally Coupled Yang-Mills Field
    Gabriel Gómez
    02/12/2021, 10:25
    Cosmology / Astroparticles
    Regular Talk (15'+5')

    In the context of quintessence, the inclusion of new degrees of freedoms to the matter sector might produce additional imprints on cosmological observables while keeping the scalar field responsible for the quintessence and the standard matter minimally coupled to gravity. We investigate this premise by including a canonical SU(2) Yang-Mills field to the total content of the universe coupled...

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  7. 11. Scale Invariant FIMP Miracle
    Basabendu Barman
    02/12/2021, 10:45
    Dark Matter
    Regular Talk (15'+5')

    We study the freeze-in production of vector dark matter (DM) in a classically scale invariant theory, where the Standard Model (SM) is augmented with an abelian $U(1)_X$ gauge symmetry that is spontaneously broken due to the non-zero vacuum expectation value (VEV) of a scalar charged under the $U(1)_X$. Generating the SM Higgs mass at 1-loop level, it leaves only two parameters in the dark...

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