Walter Tangarife's page



Contact:
E-mail: wtangarife at luc.edu

Department of Physics
Loyola University Chicago
1032 W. Sheridan Road
Chicago, IL 60660

Scholar
@waltertangarife

WT

Photo: Lukas Keapproth



Cudahy Science Hall



I am an Assistant Professor in the Department of Physics at Loyola University Chicago. Previously, I was a Visiting Assistant Professor at Colgate University, and, before that, a postdoc in the Department of Particle Physics at Tel Aviv University. I obtained my Ph.D. at The University of Texas at Austin under the supervision of Willy Fischler and I was a member of the Theory Group.

I am originally from Medellin, Colombia, where I got a B.Sc. in Physics at La Universidad de Antioquia and I was a member of the Particle Phenomenology Group (GFIF) under the supervision of Diego Restrepo.

I was selected as a KITP Scholar for the years 2020-2022.

My research is currently supported by the National Science Foundation under grant No. PHY-2013052. Any opinions, findings, and conclusions or recommendations expressed in my research material are those of the author(s) and do not necessarily reflect the views of the NSF.

I am also very fortunate to be a co-PI in the NSF ADVANCE Adaptation project INSPIRED- Inclusive Practices in the Retention and Equity of Diverse Faculty under grant HRD-2121654. This grant aims to promote the full participation and advancement of women, underrepresented minorities, and women of color faculty at LUC.






Research



Self-interaction among active neutrinos enhance the production of sterile-neutrino dark matter in the early universe (Phys. Rev. Lett. 124, 081802 (2020)).



The static patch of de Sitter, represented as a hyperboloid embedded in Minkowski space (JHEP 1408 (2014) 028).







I am interested in a variety of topics in Particle Theory, including

  • Dark Matter
  • Neutrino Physics
  • Particle Cosmology
  • Supersymmetry
  • Black Holes and the Information Paradox
  • Holographic Entanglement Entropy
  • Applications of the Gauge/Gravity Correspondence.
  • Publications

    1. Origin of Sterile Neutrino Dark Matter via Vector Secret Neutrino Interactions.
      Kevin J. Kelly, Manibrata Sen, Walter Tangarife, and Yue Zhang.
      Phys. Rev. D 101 11, 115031 (2020), arXiv:2005.03681.

    2. Probing the two-neutrino exchange force using atomic parity violation.
      Mitrajyoti Ghosh, Yuval Grossman, and Walter Tangarife.
      Phys. Rev. D 101, 116006 (2020), arXiv:1912.094441.

    3. Dodelson-Widrow Mechanism in the Presence of Self-Interacting Neutrinos.
      André de Gouvêa, Manibrata Sen, Walter Tangarife, and Yue Zhang.
      Phys. Rev. Lett. 124, 081802 (2020), arXiv:1910.04901

    4. Singlet-Doublet Dirac Dark Matter and Neutrino Masses.
      Diego Restrepo, Andres Rivera, and Walter Tangarife.
      Phys. Rev. D 100, 035029 (2019) arXiv:1906.09685.

    5. Accretion of Dissipative Dark Matter onto Active Galactic Nuclei.
      Nadav Joseph Outmazgine, Oren Slone, Walter Tangarife, Lorenzo Ubaldi, and Tomer Volansky.
      JHEP 1811 (2018) 007, arXiv:1807.04750.

    6. Dynamics of Relaxed Inflation.
      Walter Tangarife, Kohsaku Tobioka, Lorenzo Ubaldi, and Tomer Volansky.
      JHEP 1802 (2018) 084, arXiv:1706.03072.

    7. Relaxed Inflation.
      Walter Tangarife, Kohsaku Tobioka, Lorenzo Ubaldi, and Tomer Volansky.
      arXiv:1706.00438.

    8. Extending the scope of holographic mutual information and chaotic behavior.
      Nilanjan Sircar, Jacob Sonnenschein, and Walter Tangarife.
      JHEP 1605 (2016) 091, arXiv:1602.07307.

    9. Radiative neutrino masses in the singlet-doublet fermion dark matter model with scalar singlets.
      Diego Restrepo, Andres Rivera, Marta Sanchez-Pelaez, Oscar Zapata and Walter Tangarife.
      Phys. Rev. D 92, 013005 (2015) arXiv:1504.07892.

    10. Holographic Schwinger effect in de Sitter space.
      Willy Fischler, Phuc H. Nguyen, Juan F. Pedraza and Walter Tangarife.
      Phys. Rev. D91, 086015 (2015), arXiv:1411.1787.

    11. Supersymmetric Partially Interacting Dark Matter.
      Willy Fischler, Dustin Lorshboug and Walter Tangarife.
      Phys. Rev. D 91, 025010 (2015), arXiv:1405.7708.

    12. Fluctuation and dissipation in de Sitter space.
      Willy Fischler, Phuc H. Nguyen, Juan F. Pedraza and Walter Tangarife.
      JHEP 1408 (2014) 028, arXiv:1404.0347.

    13. Implications of a dark sector U(1) for gamma ray bursts.
      Tom Banks, Willy Fischler, Dustin Lorshbough and Walter Tangarife.
      Phys. Rev. D90 (2014) 043538, arXiv:1403.6844.

    14. Vector-like Fields, Messenger Mixing and the Higgs mass in Gauge Mediation.
      Willy Fischler and Walter Tangarife.
      JHEP 1405 (2014) 151, arXiv:1310.6369.

    15. A Singlet Extension of the MSSM with a Dark Matter Portal.
      Alejandro de la Puente and Walter Tangarife.
      JHEP 1407 (2014) 087, arXiv:1309.6359.

    16. Strong Subadditivity, Null Energy Condition and Charged Black Holes.
      Elena Caceres, Arnab Kundu, Juan F. Pedraza, Walter Tangarife.
      JHEP 1401 (2014) 084, arXiv:1304.3398.

    17. Quantum Fluctuations in Holographic Theories with Hyperscaling Violation.
      Mohammad Edalati, Juan F. Pedraza, Walter Tangarife Garcia.
      Phys. Rev. D 87, 046001 (2013), arXiv:1210.6993.

    18. Holographic Brownian Motion in Magnetic Environments.
      Willy Fischler, Juan F. Pedraza, Walter Tangarife Garcia.
      JHEP 1212 (2012) 002, arXiv:1209.1044.

    19. Fast Scramblers and Non-Commutative Gauge Theories
      Mohammad Edalati, Willy Fischler, Juan F. Pedraza, Walter Tangarife Garcia.
      JHEP 1207 (2012) 043, arXiv:1204.5748.

    20. Hierarchies of Susy Splittings in Holographic Gauge Mediation.
      W. Fischler and W. Tangarife Garcia.
      JHEP 1106 (2011) 046, arXiv:1104.2078.

    21. Hierarchies of Susy Splittings and Invisible Photinos as Dark Matter
      W. Fischler and W. Tangarife Garcia.
      JHEP 1101 (2011) 025, arXiv:1011.0099.
    You can find more information about my published research on the INSPIRE HEP database.
    My research is currently supported by the National Science Foundation under grant PHY-2013052. Any opinions, findings, and conclusions or recommendations expressed in my research material are those of the author(s) and do not necessarily reflect the views of the NSF.






    Undergraduate students








    LUROP Fellowships

    Loyola offers several research fellowships for undergraduates through the Loyola Undergraduate Research Opportunities Program (LUROP). The following students have received one of these fellowships under my mentorship.

  • Zach Long, Mulcahy Fellow 2021-2022.
  • Kiet Nguyen, Mulcahy Fellow 2021-2022.
  • Grace Bratrud, Mulcahy Fellow 2020-2021.
  • Jack Kraus, Mulcahy Fellow 2020-2021.
  • Luke Ignell, Mulcahy Fellow 2020-2021.

    Student projects

    Spring 2021

  • Luke Ignell: The relic abundance of dark matter - beyond the WIMP paradigm.
  • Zach Long and Kiet Anh Nguyen: The oscillating neutrino and sterile neutrinos.
  • Andres Jarquin: Sterile neutrino dark matter.
  • Grace Bratrud and Serena Watson: Ultra light dark matter.
  • Jack Kraus: Black holes, the membrane paradigm and electrodynamics.

    Fall 2020
  • Luke Ignell and Zach Long: The relic abundance of dark matter.
  • Michael Harris and Andres Jarquin: Sterile neutrino dark matter.
  • Grace Bratrud and Serena Watson: Ultra light dark matter.
  • Jack Kraus: Black holes, the membrane paradigm and electrodynamics.

    Spring 2020
  • Matthew Asher, Luke Ignell, and Andres Jarquin: The relic abundance of dark matter.
  • Michael Harris and T.J. Potter: Thermal history of the universe.
  • Jack Kraus and Joseph Summers: Black holes, the membrane paradigm and electrodynamics.

    Fall 2019
  • Luke Ignell and Serena Watson: Gravitational waves.
  • Matthew Asher, Maria Nowicki, and Natalie West: FRW cosmology and the Hubble tension.
  • Szymon Kasperek, Jack Kraus, and Joseph Summers: Black holes and the membrane paradigm. Poster , Virtual URES 2020 presentation.



  • "Nothing is too wonderful to be true, if it be consistent with the laws of nature." M. Faraday.