Valery Rubakov

Valery Rubakov
Name	Valery Rubakov
Native name	Валерий Рубаков
Birth date	3 November 1946
Birth place	Moscow, Russian SFSR, Soviet Union
Death date	21 September 2011
Death place	Moscow, Russia
Nationality	Soviet Union, Russia
Fields	Theoretical physics, particle physics, cosmology
Alma mater	Moscow State University
Doctoral advisor	Lev Okun
Known for	Vacuum decay, Rubakov–Callan effect, instantons, sphalerons
Awards	Landau Prize, Pomeranchuk Prize, Dirac Medal

Valery Rubakov was a Soviet and Russian theoretical physicist noted for pioneering work in quantum field theory, particle physics, and cosmology. He made influential contributions to the theory of vacuum decay, topological effects in gauge theories, and the interplay between particle physics and early-universe processes. His research influenced developments at institutions such as Moscow State University, Institute for Theoretical and Experimental Physics, and international collaborations involving CERN, Institute for Advanced Study, and Harvard University.

Early life and education

Rubakov was born in Moscow and educated during the postwar Soviet scientific expansion that included institutions like Moscow State University and the Landau School. He graduated from Moscow State University with a degree in physics and completed postgraduate work under the supervision of Lev Okun, connecting him with networks including Lev Landau, Isaak Pomeranchuk, and Arkady Migdal. His early training exposed him to research environments at the Kurchatov Institute, Institute for Theoretical and Experimental Physics (ITEP), and seminars attended by figures such as Aleksandr Polyakov, Andrei Sakharov, and Evgeny Lifshitz.

Academic career and positions

Rubakov held long-term positions at Institute for Nuclear Research (INR) of the Russian Academy of Sciences, the Institute for Theoretical and Experimental Physics, and Moscow State University, while maintaining visiting appointments at CERN, Princeton University, Institute for Advanced Study, and Harvard University. He was a member of the Russian Academy of Sciences and served on editorial boards and advisory committees associated with journals and programs run by organizations like European Organization for Nuclear Research, Soviet Academy of Sciences, and international collaborations such as Joint Institute for Nuclear Research (JINR). Rubakov lectured widely at summer schools and conferences including meetings organized by NATO, ICTP, SLAC, and the Perimeter Institute.

Research contributions and legacy

Rubakov's research spanned topics linking quantum chromodynamics (QCD), electroweak theory, and cosmology. He made seminal contributions to the theory of vacuum metastability and false vacuum decay first studied by Sidney Coleman and Curt Callan, extending these ideas into applications involving instantons and sphalerons originally analyzed by Gerard 't Hooft and Nikolai Makhlin. The Rubakov–Callan effect, co-named with Curt Callan, describes baryon-number–violating catalysis by grand-unified monopoles, building on earlier work by Edward Witten and Robert 'Bob' Jackiw. His investigations into sphaleron-induced processes clarified mechanisms for baryogenesis related to proposals by Andrei Sakharov, Mikhail Shaposhnikov, and Alexander Kuzmin.

Rubakov contributed to the understanding of instanton solutions in non-Abelian gauge theories, connecting with studies by Alexei Belavin, Alexander Polyakov, and Vladimir Zakharov. He explored the role of topological defects and anomalies in early-universe cosmology, interacting with models advanced by Alan Guth, Andrei Linde, and Paul Steinhardt. His work on axial anomalies and chiral effects intersected with research by Kenneth Wilson, Gerard 't Hooft (duplicate) and Steven Weinberg, influencing later developments in finite-temperature field theory and electroweak phase transitions pursued at CERN and Brookhaven National Laboratory.

Rubakov supervised students and collaborators who continued research in quantum field theory, cosmology, and particle phenomenology, linking to programs at Moscow State University, Oxford University, University of Cambridge, and Princeton University. His legacy includes rigorous reviews and monographs used by researchers working on topics related to grand unified theories, supersymmetry, and string theory intersections with cosmology.

Awards and honors

Rubakov received recognition including the Landau Prize of the Russian Academy of Sciences, the Pomeranchuk Prize awarded by ITEP and JINR, and the Dirac Medal from institutions associated with theoretical physics. He was elected to the Russian Academy of Sciences and held fellowships and visiting chairs at CERN, Institute for Advanced Study, and Harvard University. Conference proceedings and memorial sessions at venues like ICHEP, Sakharov Memorial Lectures, and Aspen Center for Physics commemorated his contributions.

Selected publications and students

Rubakov authored influential papers and reviews addressing vacuum decay, monopole catalysis, instantons, sphalerons, and cosmological implications of particle-physics processes. Notable works include collaborations and solo publications connected with authors such as Curt Callan, Andrei Linde, Mikhail Shaposhnikov, and Alexander Vilenkin. He also wrote pedagogical texts and lecture notes used in graduate courses at Moscow State University and international schools like those organized by ICTP and Les Houches Summer School.

Prominent students and collaborators who carried forward his research program include researchers with appointments at institutions such as Moscow State University, University of Oxford, Harvard University, and Princeton University, reflecting Rubakov's role in shaping modern theoretical physics research networks centered on topics pursued at CERN, SLAC, and Brookhaven National Laboratory.

Category:Russian physicists Category:Soviet physicists Category:1946 births Category:2011 deaths