Giorgio Parisi

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Giorgio Parisi.

Giorgio Parisi (born August 4, 1948 in Rome ) is an Italian physicist and university professor .

life and work

Parisi graduated from La Sapienza University in Rome in 1970 with a degree in physics . His supervisor was Nicola Cabibbo . He then worked until 1981 as a researcher at the Laboratori Nazionali di Frascati, which he left for research stays at Columbia University (1973-1974), the Institute des Hautes Etudes Scientifiques (1976-1977) and the École normal supérieure (1977-1978). 1981 to 1992 he was professor of theoretical physics at the University of Tor Vergata . Since 1992 he has been Professor of Quantum Physics at La Sapienza .

Parisi works in various branches of physics, such as high energy physics , quantum chromodynamics , the theory of phase transitions , statistical mechanics , mathematical physics , string theory and spin glasses . In studies of the scale of injury (Engl. Scaling violation) in deep inelastic scattering, he presented Guido Altarelli equations for the scale dependence of Parton density functions on ( DGLAP equations ). Later he investigated quantum chromodynamics on the grid with the help of the supercomputer APE 100 (Array Processor Experiment, also Italian bee) . By using the so-called quenched approximation , i.e. neglecting the vacuum polarization , it became possible to calculate the mass spectrum of the hadrons with an accuracy of 10 percent.

In the theory of phase transitions , Parisi developed a new method for calculating critical indices and critical exponents . He investigated spin glasses and found, with the revival of the mathematical concept of the ultrametric structure of complex systems, approaches that can also be used in biology ( neural networks , folding of copolymers , immunity ) and combinatorial optimization . He also set up a stochastic differential equation for growth in random accumulations, the Kardar-Parisi-Zhang equation (KPZ).

He is married and has two children.

Publications

  • with Marc Mézard and Miguel Virasoro : Spin glass theory and beyond . World Scientific, Singapore 1987, ISBN 9971-50-115-5 (= World scientific lecture notes in physics Volume 9)
  • Statistical Field Theory . Addison-Wesley, Redwood City 1988, ISBN 0-201-05985-1 (= Frontiers in physics Volume 66)
  • Field Theory, Disorder and Simulations . Word Scientific, Singapore 1992, ISBN 981-02-0964-9 (= World Scientific lecture notes in physics Volume 49)
  • La chiave, la luce e l'ubriaco. Come si muove una ricerca scientifica . Di Renzo, Roma 2006, ISBN 88-8323-149-X
  • Giorgio Parisi, Auletta Gennaro, Fortunato Mauro: Quantum Mechanics . Cambridge University Press, 2009, ISBN 978-0-521-86963-8 .
  • more than 350 articles in scientific journals
  • Co-editor of numerous journals (Nuclear Physics Field Theory and Statistical Mechanics, Communications in Mathematical Physics, Journal of Statistical Mechanics, Europhysics Letters, International Journal of Physics, Il Nuovo Cimento, Networks, Journal de Physique, Physica A, Physical Review E)

Prices

Memberships

Web links

Commons : Giorgio Parisi  - Collection of images, videos and audio files

swell

  1. ^ Guido Altarelli and Giorgio Parisi: Asymptotic Freedom in Parton Language. In: Nuclear Physics B . Volume 126, 1977, p. 298.Similar equations were used independently (and earlier) by Yuri L. Dokshitzer (Sov.Phys. JETP, 1977, Volume 46, p. 641) and VN Gribov and Lew N. Lipatov (Sov. J. Nucl. Phys., 1972, Volume 15, p. 438), which is why these equations are also called DGLAP.
  2. ↑ To order parameters for spin glasses. A function on the interval 0-1 In: J. Phys. 1980, Volume A13, p. 1101.
  3. ↑ Mehran Kardar, Giorgio Parisi and Yi-Cheng Zhang: Dynamic Scaling Of Growing Interfaces. In: Physical review letters 1986, volume 56, p. 889.
personal data
SURNAME Parisi, Giorgio
BRIEF DESCRIPTION Italian physicist and university professor
DATE OF BIRTH 4th August 1948
PLACE OF BIRTH Rome