Reviews of topical problems

S.A. Aseyev, A.S. Akhmanov, G.V. Girichev, A.A. Ischenko, I.V. Kochikov, V.Ya. Panchenko, E.A. Ryabov “Structural dynamics of free molecules and condensed matter” Phys. Usp. 63 103–122 (2020)

S.S. Gavrilov “Nonequilibrium transitions, chaos, and chimera states in exciton—polariton systems” Phys. Usp. 63 123–144 (2020)

G.I. Strelkova, V.S. Anishchenko “Spatio-temporal structures in ensembles of coupled chaotic systems” Phys. Usp. 63 145–161 (2020)

A.A. Askadskii, T.A. Matseevich “Latest developments of models and calculation schemes for the quantitative analysis of the physical properties of polymers” Phys. Usp. 63 162–191 (2020)

Methodological notes

V.S. Pronskikh “Measurement problems: contemporary discussions and models” Phys. Usp. 63 192–200 (2020)

Personalia

M.Ya. Azbel’, A.F. Andreev, B.M. Bolotovskii, A.Yu. Grosberg, N.M. Kreines, L.S. Levitov, L.P. Pitaevskii, V.L. Pokrovskii, E.I. Rashba, A.I. Smirnov, D.E. Khmel’nitskii, A.V. Chubukov “In memory of Moisei Isaakovich Kaganov” Phys. Usp. 63 201–203 (2020)

V.M. Bouznik, V.V. Voronov, S.V. Garnov, M.P. Egorov, V.K. Ivanov, M.V. Kovalchuk, V.I. Konov, G.Ya. Krasnikov, E.E. Lomonova, P.P. Pashinin, V.B. Tsvetkov, I.A. Shcherbakov “In memory of Vyacheslav Vasil'evich Osiko” Phys. Usp. 63 204–206 (2020)

Physics news on the internet

Yu.N. Eroshenko “Physics news on the Internet (based on electronic preprints)” Phys. Usp. 63 207–208 (2020)