Rudolf Muradovich Muradyan (Armenian: Ռուդոլֆ Մուրադի Մուրադյան; born 19 June 1936, Yerevan, Armenian SSR, USSR) is an Armenian theoretical physicist. Rudolf Muradyan's main research relate to theoretical physics, elementary-particle physics, cosmology and the origin of the Universe. Considering the properties of the interaction of elementary particles, he proposed the possibility of large-scale invariance in high-energy physics, from which the "Matveev-Muradyan-Tavkhelidze quark counting rule" is derived especially. He also researched the connection between the appearance of the Universe's rotation and magnetic fields and the cosmological constant. He is the recipient of the 1988 Lenin Prize, along with Albert Tavkhelidze and Viktor Matveev, for the discovery of dimensional quark counting rules.
Biography Rudolf Muradyan was born on June 19, 1936, in Yerevan, Armenia. After graduating from the Yerevan Secondary School № 25 in 1953, Muradyan entered the Faculty of Physics at Moscow State University in Moscow, graduating in 1959. In 1962 he finished his postgraduate study in the Faculty of Physics of Moscow State University and defended his thesis for a PhD in Physics and Mathematics. He then worked at the Laboratory of Theoretical Physics of the Joint Institute of Nuclear Research (OIJI) in Dubna near Moscow between 1962-1979 (from 1966 as a senior research fellow). In 1970 he was awarded a doctorate in physical-mathematical sciences and appointed professor. In 1972 he joined the Communist Party of the Soviet Union. His scientific papers appeared in Theoretical and Mathematical Physics. In 1970 at JINR he defended his thesis for the degree of Doctor of physical and mathematical sciences, and received the academic rank of professor.
In 1979 Rudolf Muradyan moved to Yerevan, he headed the Department of Radiation Studies of the Yerevan Physics Institute in 1979-1984. At the same time he gave special lectures on quantum theory of solids at the Faculty of Physics of Yerevan State University. In 1986 Muradyan was elected a corresponding member of the Academy of Sciences of the Armenian SSR.From 1984 to 1994 he worked at Byurakan Astrophysical Observatory of Armenian SSR Academy of Sciences (NAS RA) as a Leading Researcher and since 1985 he worked as a Team Leader. On October 16, 1994, he was elected an academician of the Pontifical Academy of Sciences. In the same year he moved again to Dubna and worked in the laboratory of theoretical physics of JINR until 1996. Since 1996 he was professor of the Institute of Physics of the Federal University of Bahia, Salvador, Brazil. In the same year he was elected an academician of the National Academy of Sciences of Armenia.
Scientific Work Rudolf Muradyan's main research is in theoretical physics, elementary particle physics, high-energy physics, cosmology and mathematical physics. In 1969, based on the quasi-free quark model, Rudolf Muradyan, together with Albert Tavkhelidze and Victor Matveev, proposed that the scaling properties of high-energy electron-nucleon interaction processes found in experiments are common to all deep inelastic lepton-hadron processes. Muradyan, Tavkhelidze and Matveev have developed an automodelicity (self-similarity) principle on the basis of which these properties may be derived directly. According to this principle, many characteristics of processes in the field of high energies and high momentum transfer, including particle form factors, do not depend on characteristic length and momentum scaling of dimensional parameters. They are homogeneous functions of relativistically invariant kinematical variables and a degree of homogeneity of these functions is determined by their physical dimensionality. A scale law describing the mass spectrum of muon pairs produced at high energies in proton ρ + ρ = μ + + μ − + {\displaystyle \rho +\rho =\mu ^{+}+\mu ^{-}+} hadrons collisions was first established using the principle of automodelicity:
d σ d M 2 ≈ 1 M 4 f ( M E ) {\displaystyle {\frac {d\sigma }{dM^{2}}}\approx {\frac {1}{M^{4}}}f\left({\frac {M}{E}}\right)}
Where M {\displaystyle M} is the effective mass of the muon pair and E {\displaystyle E} is the energy of the colliding particles. This sweeping law was confirmed in experimental studies begun in 1970 by Leon Lederman's group at Brookhaven. Subsequently, it was in these processes that a new class of hadrons - J / Ψ {\displaystyle J/\Psi } particles - were discovered. In 1973, based on the principle of self-similarity, the so-called "Matveev-Muradyan-Tavkhelidze quark counting rules" were established. They define the asymptotics of the form factors at large momentum transfer Q = − t {\displaystyle Q={\sqrt {-t}}} as well as the nature of the energy dependence of the differential cross section of an arbitrary binary scattering reaction at large angles at high energies E = s {\displaystyle E={\sqrt {s}}} :
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