Sergey Sibiryakov

Sergey Sibiryakov profile picture
McMaster University
Research Associate Faculty
Areas of research:
Cosmology
Particle Physics
My research lies in the interface of quantum field theory, particle physics, gravitation and cosmology. I'm interested in understanding the fundamental principles underlying the laws of Nature, the interplay between them and the ways to test them. Despite the impressive success of the Standard Model of particle physics (SM) and Einstein’s General Relativity (GR), there are multiple reasons to believe that they are incomplete. Here are the questions shaping my research: What are dark matter and dark energy made of? How can we test various hypotheses from observations? What information is carried by the distribution of galaxies in the universe? What are the key features of quantum gravity? What are implications of quantum gravity for the physics of other fundamental forces?
If you are interested in pursuing a MSc degree, please apply to the Perimeter Scholars International (PSI) masters program. If you are interested in working with me as a PhD student, please submit an application directly to my department at the McMaster University and indicate that you would like to be supervised by me. Perimeter Institute is committed to diversity within its community and I welcome applications from underrepresented groups.
Particle physics, cosmology, classical and quantum gravity, quantum field theory
  • Scientist, Institute of Physics, Ecole polytechnique federale de Lausanne (EPFL), 2013-2020
  • Scientific staff member, Theoretical Physics Department, CERN, 2013-2020
  • Senior Researcher, Institute for Nuclear Research of the Russian Academy of Sciences, 2010-2022
  • Researcher, Laboratory of Particle Physics and Cosmology, Institute of Theoretical Physics, Ecole polytechnique federale de Lausanne (EPFL), 2008-2010
  • Postdoctoral Fellow, Theory Division, Physics Department, CERN, 2006-2008
  • Junior Researcher, Institute for Nuclear Research of the Russian Academy of Sciences, 2004-2008
  • Discovery Grant, Dynamics and Signatures of New Physics, Natural Sciences and Engineering Research Council of Canada (NSERC), 2021-2026
  • The Best Scientific Work in Physics, Russian Academy of Sciences, 2010
  • Besharat, A., Radkovski, J., & Sibiryakov, S. (2023). Effective Action for Dissipative and Nonholonomic Systems. arxiv:2308.08695v1
  • Radkovski, J. I., & Sibiryakov, S. M. (n.d.). Scattering amplitudes in high-energy limit of projectable Horava gravity. Physical Review D, 108(4). doi:10.1103/physrevd.108.046017
  • Chan, J. H. -H., Sibiryakov, S., & Xue, W. (n.d.). Boson star normal modes. Journal of High Energy Physics, 2023(8). doi:10.1007/jhep08(2023)045
  • Radkovski, J. I., & Sibiryakov, S. M. (2023). Scattering amplitudes in high-energy limit of projectable Horava gravity. arxiv:2306.00102v1
  • Chan, J. H. -H., Sibiryakov, S., & Xue, W. (2023). Boson Star Normal Modes. arxiv:2304.13054v1
  • Chudaykin, A., Ivanov, M. M., & Sibiryakov, S. (2022). Renormalizing one-point probability distribution function for cosmological counts in cells. arxiv:2212.09799v2
  • Briaud, V., Shkerin, A., & Sibiryakov, S. (n.d.). Thermal false vacuum decay around black holes. Physical Review D, 106(12). doi:10.1103/physrevd.106.125001
  • Shkerin, A., & Sibiryakov, S. (n.d.). Black hole induced false vacuum decay: the role of greybody factors. Journal of High Energy Physics, 2022(8). doi:10.1007/jhep08(2022)161
  • Chan, J. H. -H., Sibiryakov, S., & Xue, W. (2022). Condensation and Evaporation of Boson Stars. arxiv:2207.04057v2
  • Barvinsky, A. O., Kurov, A. V., & Sibiryakov, S. M. (n.d.). Beta functions of ( http://www.w3.org/1998/Math/MathML" display="inline">3+1 )-dimensional projectable Horava gravity. Physical Review D, 105(4). doi:10.1103/physrevd.105.044009
  • Shkerin, A., & Sibiryakov, S. (2021). Black hole induced false vacuum decay from first principles. Journal of High Energy Physics, 2021(11). doi:10.1007/jhep11(2021)197
  • Marakulin, A., & Sibiryakov, S. (2021). Linearized supergravity with a dynamical preferred frame. Journal of High Energy Physics, 2021(10). doi:10.1007/jhep10(2021)214
  • Lara, G., Herrero-Valea, M., Barausse, E., & Sibiryakov, S. M. (n.d.). Black holes in ultraviolet-complete Horava gravity. Physical Review D, 103(10). doi:10.1103/physrevd.103.104007
  • Sibiryakov, S., Sørensen, P., & Yu, T. -T. (2020). BBN constraints on universally-coupled ultralight scalar dark matter. Journal of High Energy Physics, 2020(12). doi:10.1007/jhep12(2020)075
  • Fitkevich, M., Levkov, D., & Sibiryakov, S. (2020). Semiclassical $$ \mathcal{S} $$-matrix and black hole entropy in dilaton gravity. Journal of High Energy Physics, 2020(8). doi:10.1007/jhep08(2020)142
  • Katz, A., Kopp, J., Sibiryakov, S., & Xue, W. (2020). Looking for MACHOs in the spectra of fast radio bursts. Monthly Notices of the Royal Astronomical Society, 496(1), 564-580. doi:10.1093/mnras/staa1497
  • Blas, D., Nacir, D. L., & Sibiryakov, S. (n.d.). Secular effects of ultralight dark matter on binary pulsars. Physical Review D, 101(6). doi:10.1103/physrevd.101.063016
  • Quantum Field Theory in Curved Spacetime (PM) - 2023-03-31, Quantum Field Theory in Curved Spacetime, 2023/03/31, PIRSA:23030098
  • Quantum Field Theory in Curved Spacetime (PM) - 2023-03-24, Quantum Field Theory in Curved Spacetime, 2023/03/24, PIRSA:23030097
  • Quantum Field Theory in Curved Spacetime (PM) - 2023-03-17, Quantum Field Theory in Curved Spacetime, 2023/03/17, PIRSA:23030096
  • Quantum Field Theory in Curved Spacetime (PM) - 2023-03-10, Quantum Field Theory in Curved Spacetime, 2023/03/10, PIRSA:23030095
  • Status update on Horava gravity, 2023/03/08
  • Quantum Field Theory in Curved Spacetime (AM) - 2023-03-03, Quantum Field Theory in Curved Spacetime, 2023/03/03, PIRSA:23030088
  • Quantum Field Theory in Curved Spacetime (PM) - 2023-03-03, Quantum Field Theory in Curved Spacetime, 2023/03/03, PIRSA:23030094
  • Condensation and Evaporation of Boson Stars, University of Minnesota, Minneapolis, United States, 2022/11/11
  • On thermal false vacuum decay around black holes, 2022/09/14
  • Condensation and Evaporation of Boson Stars, McGill University, Montreal, Canada, 2022/09/12
  • Black hole catalysis of false vacuum decay from first principles, HECAP Seminar, ICTP, Trieste, Italy (online), 2022/07/26
  • Black hole induced false vacuum decay from first principles, Particle Physics, 2021/03/26, PIRSA:21030036
  • Black holes in UV-complete Horava gravity, Quarks 2020 (online), 2021/01/01
  • Black hole catalysis of false vacuum decay: The semiclassical decay rate and importance of greybody factors, Astrophysics seminar, Institute for Advanced Studies, USA (online), 2021/01/01
  • Black hole induced false vacuum decay from first principles, Carnegie Mellon U. (online), 2021/01/01
  • Black hole catalysis of false vacuum decay: The semiclassical decay rate and importance of greybody factors, Multimessengers and the large-scale structure, Prague, Czech Republic (online), 2021/01/01