Alexander Kusenko

Alexander Kusenko
Name	Alexander Kusenko
Fields	Particle physics; Astrophysics; Cosmology
Workplaces	University of California, Los Angeles; Department of Energy; Kavli Institute for the Physics and Mathematics of the Universe
Alma mater	Moscow State University; University of Minnesota
Known for	Baryogenesis; Dark matter; Neutrino physics; Supersymmetry

Alexander Kusenko is a theoretical physicist known for work at the interface of particle physics, astrophysics, and cosmology. He has made influential contributions to theories of baryogenesis, dark matter, and neutrino phenomena, and has held academic appointments and research posts at leading institutions. His research spans topics connecting early universe models with observable signatures in astrophysical and laboratory environments.

Early life and education

Kusenko was born and raised in Moscow, receiving early training that prepared him for advanced studies in theoretical physics. He completed undergraduate studies at Moscow State University before pursuing graduate education in the United States at the University of Minnesota, where he worked on problems related to quantum field theory and particle physics. During his doctoral and postdoctoral periods he interacted with researchers connected to institutions such as the Fermi National Accelerator Laboratory, the Institute for Advanced Study, the SLAC National Accelerator Laboratory, and the CERN community, which influenced his subsequent research directions.

Academic career and positions

Kusenko's academic appointments have included faculty positions and visiting roles at universities and research centers worldwide. He has been a professor at the University of California, Los Angeles with affiliations to departments and centers that bring together work in astrophysics, cosmology, and particle physics. His career includes collaborations and fellowships with the Department of Energy laboratories, partnerships with the Kavli Institute for the Physics and Mathematics of the Universe, and participation in programs at the Perimeter Institute for Theoretical Physics and the Institute for Nuclear Theory. He has taught graduate courses and supervised doctoral research, contributing to graduate training programs linked to the National Science Foundation and international exchange programs involving the Max Planck Society and the Simons Foundation.

Research contributions and notable works

Kusenko's research program addresses mechanisms for the generation of the baryon asymmetry, candidates and production mechanisms for dark matter, and the astrophysical implications of particle physics beyond the Standard Model. He is known for pioneering studies of nonthermal dark matter generation in the context of supersymmetry and for analyses of scalar condensates and solitonic objects that can arise in early-universe dynamics. His work on baryogenesis includes models that involve Affleck–Dine mechanisms and connections to inflationary cosmology and reheating processes discussed in studies alongside researchers at Princeton University, Harvard University, and Columbia University.

Kusenko has explored the role of sterile neutrinos as dark matter candidates, analyzing production via resonant and nonresonant processes with implications for X-ray observations by missions such as XMM-Newton and Chandra X-ray Observatory. He has investigated the interplay between particle dark matter scenarios and structure formation studies conducted with input from groups at the Observatoire de Paris, Kavli Institute for Particle Astrophysics and Cosmology, and Lawrence Berkeley National Laboratory. His analyses of cosmic-ray signatures, pulsar kicks, and supernova dynamics have engaged with work from the Max Planck Institute for Astrophysics and collaborations that encompass observational programs at the Very Large Array and the Hubble Space Telescope.

Notable theoretical advances include studies of Q-balls and other nonperturbative field configurations, contributions to understanding metastable vacuum decay in early-universe contexts, and proposals linking new physics at the TeV scale to astrophysical observables. He has coauthored papers with scholars affiliated with Stanford University, University of Chicago, Massachusetts Institute of Technology, and Yale University, reflecting interdisciplinary interactions across particle theory and observational astrophysics.

Awards and honors

Kusenko's scholarship has been recognized through invitations to major conferences and through appointments to editorial boards and advisory panels of funding agencies. He has been a recipient of research fellowships and visiting professorships associated with institutions such as the Kavli Foundation, the Simons Foundation, and national research organizations. He has served on grant review panels for the National Science Foundation and advisory committees linked to experimental collaborations supported by the Department of Energy.

Selected publications

- A. Kusenko, "Solitons in the Early Universe: Q-balls and Baryogenesis", with coauthors affiliated with Princeton University and University of Chicago, addressing non-topological soliton formation and consequences for baryon number. - A. Kusenko and collaborators, "Sterile Neutrinos as Dark Matter", engaging observational constraints from XMM-Newton and Chandra X-ray Observatory data and theoretical models connected to Big Bang Nucleosynthesis and Large Hadron Collider phenomenology. - A. Kusenko et al., "Affleck–Dine Baryogenesis and Supersymmetric Condensates", connecting early-universe scalar dynamics to signatures potentially accessible via experiments at CERN and astrophysical surveys by the Sloan Digital Sky Survey. - A. Kusenko, "Pulsar Kicks from Neutrino Emission Anisotropies", examining mechanisms tied to supernova asymmetries studied alongside researchers at the National Astronomical Observatory of Japan and the Max Planck Institute for Astrophysics.

Personal life and outreach

Kusenko has participated in public lectures and outreach activities that communicate links between fundamental theory and astrophysical observation to audiences at venues such as the Los Angeles Public Library, university public lecture series, and national science festivals supported by the American Physical Society. He has engaged with media interviews and contributed to policy discussions related to basic research funding with stakeholders including the National Academies of Sciences, Engineering, and Medicine and educational programs associated with the California Institute of Technology and regional science centers.

Category:Theoretical physicists