Theory Division

  • Theory Division

    The IFAE Theory division research focuses on Standard Model, Flavor Physics, Beyond the Standard Model, and Astroparticle and Cosmology issues. The divison is led by R. Escribano and its work comprises three main lines of research:

    Standard Model Physics and Flavor Physics (in and beyond the Standard Model)

    Working on non-perturbative aspects of QCD, quarkonium physics, and heavy-flavor physics: rare B meson decays and CP violation.

    Recent highlights include the work on the theoretical framework underpinning the so called B-flavour anomalies, a new hyperasymptotic approximation to the operator product expansion, and the precise determination of the strong coupling constant below the charm threshold.

    This research line is led by J. Matias.


    Beyond the Standard Model physics

    Working on the most intriguing questions in particle physics: the origin of the flatness and largeness of the universe, the origin of baryons and dark matter, the smallness of the Higgs mass (the hierarchy problem), or the smallness of the theta-term (the strong CP problem).

    The group has presented several novel theoretical scenarios addressing these questions that have motivated many experimental searches. They are also known for their work on more theoretical aspects, like the use of the AdS/CFT correspondence to obtain properties of strongly-coupled system.

    This research line is led by A. Pomarol.


    Astroparticle Physics and Cosmology,

    Working on dark energy, dark matter models, early-universe cosmology and on, arguably, the most enigmatic of the fundamental forces — gravity.

    Group members have made important contributions to scenarios where gravity is modified at large distances and to Lorentz-violating scenarios of quantum gravity. The group has an extended research record on axion physics, from both the phenomenology and theoretical sides. More recently, the group is contributing to primordial black hole physics, ultra-light dark matter scenarios and gravitational-wave physics from the fundamental physics perspective.

    This research line is led by O. Pujolàs.

  • Group Members

    Theory Division

    Staff Researcher

    • Diego Blas

      Diego Blas

    • Rafel Escribano

      Rafel Escribano

    • Pere Masjuan

      Pere Masjuan

    • Eduard Masso

      Eduard Masso

    • Joaquim Matias

      Joaquim Matias

    • Antoni Méndez

      Antoni Méndez

    • Ramon Pascual

      Ramon Pascual

    • Santi Peris

      Santi Peris

    • Antonio Pineda

      Antonio Pineda

    • Àlex Pomarol

      Àlex Pomarol

    • Oriol Pujolàs

      Oriol Pujolàs

    • Mariano Quirós

      Mariano Quirós

    Postdoc Researcher

    • Luigi Delle Rose

      Luigi Delle Rose

    • Evangelos Sfakianakis

      Evangelos Sfakianakis

    • Pablo Sánchez

      Pablo Sánchez

    • Ville Vaskonen

      Ville Vaskonen

    • Rodrigo Vicente

      Rodrigo Vicente

    • Benedict Von Harling

      Benedict Von Harling

    • George  Zahariade

      George Zahariade

    • Ricardo Zambujal

      Ricardo Zambujal

    PhD Student

    • Cristian Alarcon

      Cristian Alarcon

    • Marcel Algueró

      Marcel Algueró

    • Yann Cado

      Yann Cado

    • Clara Fernández

      Clara Fernández

    • Silvia Gasparotto

      Silvia Gasparotto

    • Angel Gil

      Angel Gil

    • Jan Ollé

      Jan Ollé

    • Arul Prakash

      Arul Prakash

    • Camilo Rojas

      Camilo Rojas

    • Emilio Royo

      Emilio Royo

    • Lindber Salas

      Lindber Salas

    • Francesco Sciotti

      Francesco Sciotti

    • Juan Urrutia

      Juan Urrutia

    • Fabio Van Dissel

      Fabio Van Dissel

  • Selected Publications

    Theory Division

    • Cado Y et al.
      Baryogenesis via gauge field production from a relaxing Higgs
      Journal Of Cosmology And Astroparticle Physics. 2021 (7): (2021) [DOI] [arXiv]
    • Boito D et al.
      Strong coupling from an improved τ vector isovector spectral function
      Physical Review d. 103 (3): (2021) [DOI] [arXiv]
    • Ayala C et al.
      Determination of α(Mz) from an hyperasymptotic approximation to the energy of a static quark-antiquark pair
      Journal Of High Energy Physics. 2020 (9): (2020) [DOI] [arXiv]
    • Escribano, Rafel et al.
      Theoretical analysis of the doubly radiative decays eta(()'()) -> pi(0)gamma gamma and eta ' -> eta gamma gamma
      Physical Review d. 102 (3): (2020) [DOI] [arXiv]
    • Ferrer F et al.
      Primordial Black Holes from the QCD Axion
      Physical Review Letters. 122 (10): 101301- (2019) [DOI] [arXiv]
    • Anzai C et al.
      S -wave heavy quarkonium spectrum with next-to-next-to-next-to-leading logarithmic accuracy
      Physical Review d. 98 (11): (2018) [DOI] [arXiv]
    • Capdevila B et al.
      Patterns of New Physics in b → sℓ+ℓ− transitions in the light of recent data
      Journal Of High Energy Physics. 2018 (1): (2018) [DOI] [arXiv]
    • Escribano R et al.
      η′ transition form factor from space- and timelike experimental data
      Physical Review d. 94 (5): (2016) [DOI] [arXiv]
    • Descotes-Genon, Sebastien et al.
      Global analysis of b -> sll anomalies
      Journal Of High Energy Physics. 2016 (6): 1-70 (2016) [DOI] [arXiv]
    • Aubin C et al.
      Finite-volume effects in the muon anomalous magnetic moment on the lattice
      Physical Review d. 93 (5): (2016) [DOI] [arXiv]
  • Group News

    New Paper

    New Gravitational Waves paper

    January 26, 2022

    Search for a scalar induced stochastic gravitational wave background in the third LIGO-Virgo observing run” by Alba Romero-Rodríguez, Mario Martínez, Oriol Pujolàs, et al. has been selected as PRL Editors' Suggestion.

    New Paper

    New Theory group paper

    January 23, 2022

    Axial-vector exchange contribution to the Hyperfine Splitting by Pablo Sanchez-Puertas and collaborators has been published in Physical review D.”

    New Member

    New Member in the Theory group

    January 19, 2022

    Arul Prakash has just joined the Theory group as a PhD student.

    New Paper

    New MultiMessenger paper

    January 19, 2022

    Quantum gravity phenomenology at the dawn of the multi-messenger era — A review” by Manel Martínez, Daniel Kerszberg, Diego Blas, Mario Martínez and others has been accepted for publication in Progress in Particle and Nuclear Physics. This paper is a review by the world experts on QG phenomenology, working together in the framework of the Quantum Gravity in the MultiMessenger era (QGMM) COST Action.

    New Paper

    New Theory group paper

    January 19, 2022

    Operator delocalization in quantum networks” by Jan Ollé and others has been published in Physical Review A.

    New Member

    New Member in the Theory group

    January 12, 2022

    Francesco Sciotti has just joined the Theory group as a PhD student.