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| Mikhail Shaposhnikov | |
|---|---|
| Name | Mikhail Shaposhnikov |
| Birth date | 1956 |
| Birth place | Moscow, Russian SFSR |
| Nationality | Soviet Union → Russia → Switzerland |
| Fields | Theoretical physics, Cosmology, Particle physics |
| Workplaces | Moscow State University, Institute for Nuclear Research (INR) of the Russian Academy of Sciences, CERN, École Polytechnique Fédérale de Lausanne, Hamilton College |
| Alma mater | Moscow Institute of Physics and Technology, Landau Institute for Theoretical Physics |
| Doctoral advisor | Lev Landau (academic lineage) |
| Known for | Cosmology, baryogenesis, Higgs physics, extra-dimensional models |
| Awards | International Centre for Theoretical Physics affiliations, various fellowships |
Mikhail Shaposhnikov is a theoretical physicist noted for influential work in cosmology and particle physics, particularly on baryogenesis, electroweak symmetry breaking, and extensions of the Standard Model. His research spans topics connected to early-universe Big Bang physics, the Higgs boson, and mechanisms for generating the matter–antimatter asymmetry via novel particle physics scenarios. He has held positions at prominent institutions in Russia, Europe, and North America and collaborated widely across the particle physics and cosmology communities.
Shaposhnikov was born in Moscow and received his foundational training at the Moscow Institute of Physics and Technology and the Landau Institute for Theoretical Physics, situating him within the Soviet theoretical tradition associated with figures like Lev Landau and Isaak Khalatnikov. During his formative years he interacted with researchers from the Institute for Nuclear Research (INR) of the Russian Academy of Sciences and participated in seminars that connected Soviet work to developments at Western centers such as CERN and the International Centre for Theoretical Physics.
He began his research career at the Landau Institute for Theoretical Physics and the Institute for Nuclear Research (INR) of the Russian Academy of Sciences, later accepting visiting and permanent posts at institutions including CERN, the École Polytechnique Fédérale de Lausanne (EPFL), and Hamilton College. Throughout his career he has collaborated with scholars from Princeton University, Harvard University, Stanford University, University of Cambridge, University of Oxford, and research groups in Japan, Switzerland, and France. His roles have combined research, graduate supervision, and participation in international collaborations centered on topics addressed by experiments at Large Hadron Collider facilities and observational probes like Wilkinson Microwave Anisotropy Probe and Planck (spacecraft).
Shaposhnikov has made key contributions to mechanisms of baryogenesis, notably work on electroweak baryogenesis alternatives and scenarios involving sterile neutrinos closely related to the seesaw mechanism and the neutrino minimal Standard Model. He proposed frameworks in which right-handed or sterile neutrinos generate the cosmological baryon asymmetry through resonant processes, connecting to experimental searches pursued by collaborations at CERN and beam-dump experiments such as NA62 and proposed facilities like SHiP. His work on the stability of the Higgs boson potential and vacuum metastability tied precision top-quark and Higgs-mass measurements from Tevatron and ATLAS/CMS to cosmological implications explored with cosmologists studying inflation.
In particle-physics model building he investigated extensions involving extra dimensions and warped geometries, engaging with concepts related to the Randall–Sundrum model and ideas from Kaluza–Klein theory to address hierarchy problems originally posed in the context of Standard Model naturalness debates. Shaposhnikov contributed to proposals combining cosmological inflation with particle physics realizations such as Higgs-driven inflation scenarios that tied predictions to observations by Planck (spacecraft) and BICEP collaborations. He also explored nonperturbative phenomena in thermal field theory relevant to sphaleron transitions first studied in works linked to Mikhail Shaposhnikov's broader field by researchers at Institute for Advanced Study and CERN.
Shaposhnikov's honors reflect recognition by institutions active in theoretical physics and cosmology. He has received fellowships and visiting professorships at organizations including the International Centre for Theoretical Physics and research chairs at universities such as EPFL. His work has been cited in award contexts related to collaborations that include recipients of prizes like the Dirac Medal and membership in networks funded by bodies such as the European Research Council and national science academies. (Specific national awards and prize names vary across years and appointments.)
- Shaposhnikov, M., et al., papers on sterile neutrino baryogenesis and the neutrino minimal Standard Model exploring leptogenesis via oscillations and resonant effects, published in leading journals and conference proceedings associated with Physical Review Letters and Journal of High Energy Physics. - Studies on the stability of the electroweak vacuum connecting Higgs boson mass, top quark mass, and cosmological evolution with collaborators at institutions including CERN and EPFL. - Works on Higgs inflation models integrating particle theory insights with cosmological datasets from Planck (spacecraft) and WMAP. - Papers on extra-dimensional frameworks and hierarchy problem approaches engaging with Randall–Sundrum model literature and analyses inspired by Kaluza–Klein theory.
Shaposhnikov lives and works between research centers in Europe and North America, mentoring students from institutions such as Moscow State University, Moscow Institute of Physics and Technology, and EPFL. His legacy is evident in the sustained experimental programs searching for sterile neutrinos and in theoretical lines tracing from electroweak-scale cosmology to collider phenomenology at LHC experiments. His proposals continue to inform projects at experimental facilities like CERN and conceptual developments in particle cosmology pursued by research groups worldwide.
Category:Russian physicists Category:Theoretical physicists Category:Cosmologists