Reviews of topical problems

A.V. Tutukov, G.N. Dryomova, V.V. Dremov “Hypervelocity stars: theory and observations” Phys. Usp. 64 967–989 (2021)

V.V. Klimov “Control of the emission of elementary quantum systems using metamaterials and nanometaparticles” Phys. Usp. 64 990–1020 (2021)

D.D. Sukachev “Large quantum networks” Phys. Usp. 64 1021–1037 (2021)

Physics of our days

K.Yu. Khabarova, N.N. Kolachevsky “Proton charge radius” Phys. Usp. 64 1038–1048 (2021)

Methodological notes

V.V. Brazhkin “Why does statistical mechanics 'work' in condensed matter?” Phys. Usp. 64 1049–1057 (2021)

G.B. Malykin “Application of the modified Duguay method for measuring the Lorentz contraction of a moving body length” Phys. Usp. 64 1058–1062 (2021)

Personalia

Yu.Yu. Balega, G.A. Zherebtsov, Yu.N. Kul’chin, V.V. Kveder, A.V. Latyshev, A.G. Litvak, V.A. Matveev, G.A. Mesyats, R.I. Nigmatulin, N.A. Ratakhin, A.M. Sergeev, A.M. Shalagin “Sergei Nikolaevich Bagaev (on his 80th birthday)” Phys. Usp. 64 1063–1064 (2021)

S.N. Bagaev, A.G. Zabrodskii, V.N. Zadkov, A.A. Kaplyanskii, V.V. Kveder, N.N. Kolachevsky, G.A. Mesyats, A.V. Naumov, K.M. Salikhov, R.A. Suris, A.M. Shalagin, I.A. Shcherbakov “Evgenii Andreevich Vinogradov (on his 80th birthday)” Phys. Usp. 64 1065–1066 (2021)

P.I. Arseev, E.A. Vinogradov, V.V. Kveder, K.D. Litasov, A.K. Murtazaev, V.M. Pudalov, V.N. Ryzhov, M.V. Sadovskii, S.V. Streltsov, R.A. Suris, N.V. Surovtsev, I.A. Shcherbakov “Vadim Veniaminovich Brazhkin (on his 60th birthday)” Phys. Usp. 64 1067–1068 (2021)

Physics news on the internet

Yu.N. Eroshenko “Physics news on the Internet (based on electronic preprints)” Phys. Usp. 64 1069–1070 (2021)