Mikhail Borisovich Voloshin passed away unexpectedly in the 67th year of life. Voloshin was born on May 14, 1953 in Romania, where his father worked at that time. He went to the first specialized physical class of the famous 57th Moscow school, which he graduated from in 1970, and then entered, without exams, the Faculty of General and Applied Physics of the Moscow Institute of Physics and Technology (MIPT) as a winner of the International Physics Olympiad. Already in his student days, Voloshin's leadership among physicists of his generation became clearly pronounced. He studied at the department of elementary particle physics, whose head was Karen Avetovich Ter-Martirosyan. The institute associated with the department was the Institute for Theoretical and Experimental Physics (ITEP). When a thirdyear student, Voloshin passed the theoreticalminimum exams on quantum mechanics and quantum electrodynamics under Ter-Martirosyan and onGeneral Relativity (GR) under Igor' Yur'evich Kobzarev. Voloshin's academic advisor was Lev Borisovich Okun', who considered Voloshin his favorite student. The first paper by Voloshin, co-authored with Kobzarev and Okun', was devoted to the decay of a false vacuum. The results obtained there have been included in textbooks and are topical even now: the Higgs boson mass is such that our vacuum is at the stability boundary. The paper was published in the journal Yadernaya fizika (Nuclear Physics) (Vol. 20, p. 1229) in 1974. In about ten years, in a series of studies written by Voloshin together with K G Selivanov, he examined the processes of induced false vacuum decay with heavy-particle masses or colliding particle energies as inducing factors. It was revealed that the induced processes cannot be described by the perturbation theory on the background of a Euclidean solution, and the possibility of the disappearance of exponential suppression on the sphaleron energy scale was analyzed. This pioneering work opened new fields of research. In the autumn of 1974, the ``November revolution'' broke out: the groups of Ting in Brookhaven and Richter in Stanford discovered the J=C meson almost simultaneously. Voloshin and collaborators immediately joined the development of quarkonium theory; later, Voloshin without a doubt became the most prominent expert on heavy quark physics in the world. He made a fundamental contribution to the sum rule, the physics of hadrons containing heavy quarks, the basic elements of QCD, and the quark model. Based on the QCD sum rules, he predicted the Zc-meson mass that differed greatly from the experimental values available at the time. The uncertainty of that prediction was estimated, showing that the experimental value could not be valid. This prediction was confirmed by subsequent experiments. Together with M A Shifman, Voloshin found an elegant way to evaluate the matrix element of the Kobayashi±Maskawa matrix Vcb from exclusive semilepton B-meson decays. This method was used to seek manifestations of the new physics. Having graduated from MIPT in 1976, Voloshin began working at ITEP, and a year later defended his candidate thesis. Several years later, he defended his doctoral thesis devoted to the U-meson theory. Voloshin had a very wide spectrum of interests, not limited to heavy quark physics. He discovered the `custodial symmetry' of the electroweak theory relating the masses ofW and Z bosons. Voloshin, along with Okun' andM IVysotskii, proposed to measure time variations of neutrino fluxes associated with solar cycles as a method to discover the neutrino magnetic moment. These measurements have been carried out to date. Uspekhi Fizicheskikh Nauk 190 (5) 557 ± 558 (2020) Translated by M V Tsaplina PERSONALIA PACS number: 01.60.+q

theoretical physicist of world renown and correspondent member of the Russian Academy of Sciences, died at the age of 70. Born in Moscow, Kaidalov was educated in nuclear and elementary particle physics at the Engineering Physics Institute (MEPhI), from which he graduated in 1963. He completed his diploma thesis under the guidance of I Ya Pomeranchuk, who then headed the Theoretical Department at the Institute of Theoretical and Experimental Physics (ITEP), which Kaidalov joined soon after his graduation from MEPhI and to which he remained devoted to the end of his days. Having started his academic career as a junior researcher, he became the head of a theoretical laboratory. He defended his PhD thesis in 1968 and received the degree of a Doctor of Sciences in 1979. In 2003, Kaidalov was elected a correspondent member of the RussianAcademy of Sciences. Even at the onset of his carrier, the young researcher showed a keen scientific intuition, the ability to see the most essential features of physical phenomena and to offer a suitable theoretical interpretation. At that time, experiments at the ITEP and Protvino accelerators (and later at ISR at CERN) started yielding a plethora of information about high-energy hadron interactions. With basic studies in highenergy physics just gaining momentum at that time, the method of complex angular momenta based on the analyticity and unitarity of the scattering amplitude (the Reggeon theory) marked a real breakthrough in this domain. Kaidalov pioneered the application of this approach to a systematic description of the hadron±hadron interaction dynamics at high energies. His first work investigated the role of moving Regge cuts, a relevant problem at that time. Kaidalov predicted a number of striking qualitative effects arising from the contribution of cuts to the cross sections of two-particle processes, which were later confirmed in experiment. A thorough analysis of diffraction dissociation processes enabled Kaidalov to establish the lower bound for twoPomeron cuts, thereby removing any doubt as to the necessity of taking them into account. His analysis of inelastic diffraction processes was of paramount importance for understanding the structure of the Reggeon field theory. He was the first to derive the triple-Pomeron interaction constant that characterizes the contribution of more complicated (`enhanced') diagrams of the Reggeon field theory. The method of Reggeon dispersion sum rules proposed by Kaidalov was used to predict the exotic baryon resonance with spin and isospin 5/2. Kaidalov made an invaluable contribution to the theory of multiple high-energy processes. When most theorists regarded the first experimental data as a mere haphazard collection of plots and figures, Kaidalov identified the main experimental findings as the effects of multiperipheral dynamics and t-channel quantum numbers. He and his coworkers proposed a model of Reggeized one-pion exchange that permitted systematizing and quantitizing a large number of inclusive and exclusive reactions in a broad energy range. The advent of quantum chromodynamics required the general phenomenological results of the Reggeon theory to be reformulated in terms of quarks and gluons. Kaidalov developed a new approach to the description of multiple processes at high energies (known as the quark±gluon string model) based on fundamental features of the Reggeon method, the topological 1=N expansion of QCD amplitudes, and current views of the confinement mechanism. This model was used to clarify the relationship between different Regge trajectories, to theoretically estimate cross sections of multiple hadron processes, to quantitatively describe a multitude of inclusive processes, and to predict the masses and widths of new hadron resonances, including exotic ones. Moreover, the Uspekhi Fizicheskikh Nauk 181 (3) 341 ± 342 (2011) DOI: 10.3367/UFNr.0181.201103j.0341 Translated by Yu VMorozov PERSONALIA PACS number: 01.60.+q

Памяти Владимира Владимировича Бронфмана, Алексеев И.Г., Волошин М.В., Гиппиус Н.А., Данилов М.В., Казанцев Д.В., Миронов А.Д., Морозов А.Ю., Окунь Л.Б., Рубаков В.А., Свирида Д.Н., Семенов А.Л., Тиняков П.Г.

Памяти Александра Леонидовича Суворова, Абов Ю.Г., Велихов Е.П., Данилов М.В., Илькаев Р.И., Ковальчук М.В., Окунь Л.Б., Оныкий Б.Н., Румянцев А.Ю., Рыкованов Г.Н., Смирнов В.П., Солонин М.И., Шарков Б.Ю.

Александр Николаевич Скринский (к семидесятилетию со дня рождения), Барков Л.М., Беляев С.Т., Бондарь А.Е., Данилов М.В., Диканский Н.С., Кругляков Э.П., Кулипанов Г.Н., Мешков И.Н., Окунь Л.Б., Пархомчук В.В., Сидоров В.А., Шатунов Ю.М.

Памяти Карена Аветовича Тер-Мартиросяна, Абов Ю.Г., Андреев А.Ф., Высоцкий М.И., Данилов М.В., Дрёмин И.М., Иоффе Б.Л., Кайдалов А.Б., Канчели О.В., Окунь Л.Б., Симонов Ю.А., Скринский А.Н., Шарков Б.Ю.

Памяти Константина Геннадьевича Селиванова, Волошин М.Б., Высоцкий М.И., Горский А.С., Данилов М.В., Кербиков Б.О., Клевцов С.Г., Морозов А.Ю., Новиков В.А., Окунь Л.Б., Рослый А.А., Рубаков В.А., Суворов А.Л.

Памяти Владимира Григорьевича Фирсова, Гордеев В.А., Графутин В.И., Данилов М.В., Данилян Г.В., Давыдов А.В., Джепаров Ф.С., Лексин Г.А., Никольский Б.А., Окунь Л.Б., Пономарев Л.И., Суворов А.Л., Терехов Ю.В.

Карен Аветович Тер-Мартиросян (к восьмидесятилетию со дня рождения), Абов Ю.Г., Боресков К.Г., Владимирский В.В., Данилов М.В., Данилян Г.В., Дятлов И.Т., Иоффе Б.Л., Кайдалов А.Б., Канчели О.В., Окунь Л.Б., Симонов Ю.А., Суворов А.Л.

mathematics, a brilliant scientist, expert in polarization phenomena in nuclear physics and elementary particle physics, died on August 12, 2001 after a long illness. I I Levintov was born on 11 July 1916 in Odessa. His life followed a checkered path. Before enrolling in Moscow State University (MSU) in 1934, he worked as laboratory technician at the L Ya Karpov Physico-Chemical Institute. He graduated fromMSU in 1940 and wasmobilized into the Red Army by the end of the year; he was fighting against the German invasion at the frontline, on the Western and SouthWestern fronts. In 1942 he was wounded and retired from active service. For his courage at the front, he was awarded ``The Fatherland (Otechestvennaya) War'' Order IInd class and a number of medals. At the end of 1942 he started working at the Institute of Chemical Physics of the USSR Academy of Sciences, as Junior and then Senior Scientist, and as Research TeamLeader until his transfer to the Institute for Theoretical andExperimental Physics (ITEP) in 1956. In 1947 I I Levintov submitted and defended his PhD thesis (physics and mathematics), and in 1957 his DSc thesis. The theses summarized Levintov's results obtained in studying the nature of spin effects in strong interactions; it was a pioneering work in the USSR. Levintov carried out a systematic experimental program and interpreted the results obtained. The Keller ± Levintov theorem describing the characteristic features of the spin-orbital interaction is widely known. I I Levintov's work at the Institute of Chemical Physics determined the main thrust of his research for several decades and manifested his credentials as a physicist who combined his experimental work with profound and nontrivial theoretical analysis of phenomena of interest. Having transferred to the Institute for Theoretical and Experimental Physics, I I Levintov continued his study of polarization effects in direct reactions and, beginning in 1963, became head of the Cyclotron Laboratory of ITEP. His interests were largely changing at this time to studying polarization effects at high energies. He organized a team of physicists who pioneered measurements of polarization in elastic proton-proton scattering at energies of several GeV on the Laboratory of High Energy accelerator at the Joint Institute of Nuclear Research (JINR) at Dubna. The nonzero results of this experiment indicated the significant role of spin effects at high energies and stimulated a series of new experiments in the USSR and abroad. In 1968 I I Levintov developed the theoretical foundation for a program of studying polarization parameters in the channels of the elastic p p-, K p-, pp-scattering at 40 GeV/c. A series of successful experiments of the IHEP± JINR± ITEP ±Saclay (France) international cooperation on the Serpukhov accelerator obtained unique data which made possible direct reconstruction of amplitudes of the pionnucleon scattering and verification of several important predictions of the Regge phenomenology. I I Levintov made a significant contribution to the theoretical understanding of the results collected. Although spin physics was the main field of Levintov's research, his work was not limited to this topic alone. I I Levintov possessed the gift of choosing the most exciting and promising problems in nuclear physics and elementary particle physics. For instance, he suggested measuring the A-dependence of the deuteron yield in the interaction of fast protons with nuclei, which proved to be nontrivial. I I Levintov initiated a series of projects on the excitation of nuclear energy levels by high-energy hadrons; very unexpected physical results were obtained. He led work on the study of themechanism of excitation of the lower levels Uspekhi Fizicheskikh Nauk 172 (7) 837 ± 838 (2002) Translated by V I Kisin PERSONALIA PACS number: 01.60.+q

The celebrations of the 275th anniversary of the Russian Academy of Sciences are taking place in Moscow from 31 May to 5 June 1999. Joint Jubilee Session of the Division of General Physics and Astronomy and the Division of Nuclear Physics of the Russian Academy of Sciences (RAS) was held at the P N Lebedev Physics Institute, RAS on 1 June 1999. The following talks will be presented: (1) Andreev A F 'Mesoscopic superconductivity in superspace'; (2) Rubakov V A 'Particle physics and cosmology: current status and anticipation'; (3) Gaponov-Grekhov A V, Luchinin A G and Talanov V I 'Physical foundations of remote-control probing of the ocean'; (4) Alferov Zh I 'Quantum-dimensional nanostructures'; (5) Boyarchuk A A 'Binary stars'; (6) Danilov MV 'Current status and prospects in elementary particle physics (experimenter's outlook'). Papers based on these talks will be published in a special jubilee issue of Physics-Uspekhi.

Lev Borisovich Okun (on his 80th birthday), M I Vysotsky, Semen S Gershtein, Valentin I Zakharov, Vladimir S Imshennik, Aleksei B Kaidalov, Vladimir I Kogan, Aleksei Yu Morozov, Viktor A Novikov, Valerii A Rubakov, Yurii A Simonov, A N Skrinsky, Nikolai E Tyurin

Василий Васильевич Владимирский (к 80-летию со дня рождения), Абов Ю.Г., Андреев А.Ф., Беляев С.Т., Гинзбург В.Л., Данилов М.В., Иоффе Б.Л., Кафтанов В.С., Кошкарев Д.Г., Окунь Л.Б., Скринский А.Н., Соколовский В.В., Харитон Ю.Б., Чувило И.В., Шведов О.В.