Tullio Regge | |
---|---|

Born | |

Died | 23 October 2014 83) | (aged

Alma mater | University of Turin |

Known for | Regge theory Regge calculus |

Awards | Dannie Heineman Prize for Mathematical Physics (1964) Albert Einstein Award (1979) Pomeranchuk Prize (2001) |

Scientific career | |

Fields | Theoretical physics |

Institutions | Max Planck Institute for Physics University of Turin Institute for Advanced Study Polytechnic University of Turin |

Doctoral advisor | Robert Marshak |

**Tullio Eugenio Regge** (Italian: [ˈtulljo ˈrɛddʒe] ; July 11, 1931 – October 23, 2014) was an Italian theoretical physicist.^{ [1] }

Regge obtained the * laurea * in physics from the University of Turin in 1952 under the direction of Mario Verde and Gleb Wataghin, and a Ph.D. in physics from the University of Rochester in 1957 under the direction of Robert Marshak. From 1958 to 1959 Regge held a post at the Max Planck Institute for Physics where he worked with Werner Heisenberg. In 1961 he was appointed to the chair of Relativity at the University of Turin. He also held an appointment at the Institute for Advanced Study from 1965 to 1979. He was emeritus professor at the Polytechnic University of Turin while contributing work at CERN as a visiting scientist. Regge died on October 23, 2014.^{ [2] } He was married to Rosanna Cester, physicist, by whom he had three children: Daniele, Marta and Anna.

In 1959, Regge discovered a mathematical property of potential scattering in the Schrödinger equation—that the scattering amplitude can be thought of as an analytic function of the angular momentum, and that the position of the poles determines power-law growth rates of the amplitude in the purely mathematical region of large values of the cosine of the scattering angle (i.e. , requiring complex angles).^{ [3] }^{ [4] }^{ [5] }^{ [6] }^{ [7] }^{ [8] } This formulation is known as Regge theory.

In the early 1960s, Regge introduced Regge calculus, a simplicial formulation of general relativity. Regge calculus was the first discrete gauge theory suitable for numerical simulation, and an early relative of lattice gauge theory. In 1968 he and G. Ponzano developed a quantum version of Regge calculus in three space-time dimensions now known as the Ponzano-Regge model.^{ [9] } This was the first of a whole series of state sum models for quantum gravity known as spin foam models. In mathematics, the model also developed into the Turaev-Viro model, an example of a quantum invariant.

He received the Dannie Heineman Prize for Mathematical Physics in 1964, the Città di Como prize in 1968, the Albert Einstein Award in 1979,^{ [10] } and the Cecil Powell Medal in 1987.

In 1989, Regge was elected to the European Parliament as a candidate of the Italian Communist Party and served until 1994. Regge served as president of the Turin section of the Association for Research in Handicap Prevention (AIRH).

He was awarded the Dirac Medal in 1996,^{ [11] } the Marcel Grossmann Award in 1997,^{ [12] } and the Pomeranchuk Prize in 2001.^{ [13] } The asteroid 3778 Regge has been named after him.

Regge theory, a theory of strong interaction phenomenology at high energies, and Regge calculus are named after him.

*Lettera ai giovani sulla scienza*, Rizzoli, 2004*Spazio, tempo e universo. Passato, presente e futuro della teoria della relatività*, with Giulio Peruzzi, UTET Libreria, 2003*L'universo senza fine. Breve storia del Tutto: passato e futuro del cosmo*, Milan, Mondadori, 1999*Non abbiate paura. Racconti di fantascienza*, La Stampa, 1999*Infinito*, Mondadori, 1996*Gli eredi di Prometeo. L'energia nel futuro*, La Stampa, 1993*Le meraviglie del reale*, La Stampa, 1987*Dialogo*, with Primo Levi, Einaudi, 1987*Cronache Dell'Universo*, Boringhieri, 1981

**Laurent Freidel** is a French theoretical physicist and mathematical physicist known mainly for his contributions to quantum gravity, including loop quantum gravity, spin foam models, doubly special relativity, group field theory, relative locality and most recently metastring theory. He is currently a faculty member at Perimeter Institute for Theoretical Physics in Waterloo, Ontario, Canada.

**Tullio Levi-Civita**, was an Italian mathematician, most famous for his work on absolute differential calculus and its applications to the theory of relativity, but who also made significant contributions in other areas. He was a pupil of Gregorio Ricci-Curbastro, the inventor of tensor calculus. His work included foundational papers in both pure and applied mathematics, celestial mechanics, analytic mechanics and hydrodynamics.

In general relativity, **Regge calculus** is a formalism for producing simplicial approximations of spacetimes that are solutions to the Einstein field equation. The calculus was introduced by the Italian theoretician Tullio Regge in 1961.

In physics, the **pomeron** is a Regge trajectory — a family of particles with increasing spin — postulated in 1961 to explain the slowly rising cross section of hadronic collisions at high energies. It is named after Isaak Pomeranchuk.

In quantum physics, **Regge theory** is the study of the analytic properties of scattering as a function of angular momentum, where the angular momentum is not restricted to be an integer multiple of *ħ* but is allowed to take any complex value. The nonrelativistic theory was developed by Tullio Regge in 1959.

**Gabriele Veneziano** is an Italian theoretical physicist and one of the pioneers of string theory. He has conducted most of his scientific activities at CERN in Geneva, Switzerland, and held the Chair of Elementary Particles, Gravitation and Cosmology at the Collège de France in Paris from 2004 to 2013.

The term "**bootstrap model**" is used for a class of theories that use very general consistency criteria to determine the form of a quantum theory from some assumptions on the spectrum of particles. It is a form of S-matrix theory.

**Isaak Yakovlevich Pomeranchuk** was a Soviet theoretical physicist working in particle physics, quantum field theory, electromagnetic and synchrotron radiation, condensed matter physics and the physics of liquid helium. The Pomeranchuk instability, the pomeron, and a few other phenomena in particle and condensed matter physics are named after him.

**Stanley Mandelstam** was an American theoretical physicist. He introduced the relativistically invariant Mandelstam variables into particle physics in 1958 as a convenient coordinate system for formulating his double dispersion relations. The double dispersion relations were a central tool in the bootstrap program which sought to formulate a consistent theory of infinitely many particle types of increasing spin.

**Giuliano Preparata** was an Italian physicist.

The **history of string theory** spans several decades of intense research including two superstring revolutions. Through the combined efforts of many researchers, string theory has developed into a broad and varied subject with connections to quantum gravity, particle and condensed matter physics, cosmology, and pure mathematics.

**Giorgio Parisi** is an Italian theoretical physicist, whose research has focused on quantum field theory, statistical mechanics and complex systems. His best known contributions are the QCD evolution equations for parton densities, obtained with Guido Altarelli, known as the Altarelli-Parisi or DGLAP equations, the exact solution of the Sherrington-Kirkpatrick model of spin glasses, the Kardar–Parisi–Zhang equation describing dynamic scaling of growing interfaces, and the study of whirling flocks of birds.

**Sergio Ferrara** is an Italian physicist working on theoretical physics of elementary particles and mathematical physics. He is renowned for the discovery of theories introducing supersymmetry as a symmetry of elementary particles and of supergravity, the first significant extension of Einstein's general relativity, based on the principle of "local supersymmetry". He is an emeritus staff member at CERN and a professor at the University of California, Los Angeles.

**S-matrix theory** was a proposal for replacing local quantum field theory as the basic principle of elementary particle physics.

**Vladimir Naumovich Gribov** was a prominent Russian theoretical physicist, who worked on high-energy physics, quantum field theory and the Regge theory of the strong interactions.

**Tai Tsun Wu** is a Chinese-born American physicist and applied physicist well known for his contributions to high-energy nuclear physics and statistical mechanics.

**Lev Nikolaevich Lipatov** was a Russian physicist, well known for his contributions to nuclear physics and particle physics. He has been the head of Theoretical Physics Division at St. Petersburg's Nuclear Physics Institute of Russian Academy of Sciences in Gatchina and an Academician of the Russian Academy of Sciences.

**Karen Avetovich Ter-Martirosyan** was a Soviet and Russian theoretical physicist of Armenian descent. He is known for his contributions to quantum mechanics and quantum field theory and the author of several hundred articles in his area.

**Aleksander Ilyich Akhiezer** was a Soviet theoretical physicist, known for contributions to numerous branches of theoretical physics, including quantum electrodynamics, nuclear physics, solid state physics, quantum field theory, and the theory of plasma. He was the brother of the mathematician Naum Akhiezer.

**Sergio Fubini** was an Italian theoretical physicist. He was one of the pioneers of string theory. He was engaged in peace activism in the Middle East.

- ↑ Piero Bianucci (2014-10-24). "Addio a Tullio Regge, genio della fisica". lastampa.it. p. 18. Retrieved 2014-10-25.
- ↑ D'Auria, Riccardo (January 2015). "Faces and places: Tullio Regge 1931-2014" (PDF).
*CERN Courier*.**55**(1): 39–40.^{[ permanent dead link ]} - ↑ Tullio Regge, "Introduction to complex angular momentum,"
*Il Nuovo Cimento Series*10, Vol. 14, 1959, p. 951. - ↑ Iliopoulos, John (1996), Krige, John (ed.),
*History of CERN, Volume 3*, Elsevier, p. 301, ISBN 978-0-444-89655-1 - ↑ Cao, Tian Yu (1998),
*Conceptual developments of 20th century field theories*, Cambridge University Press, p. 224, ISBN 978-0-521-63420-5 - ↑ Collins, P. D. B. (1977).
*An Introduction to Regge Theory and High-Energy Physics*. Cambridge University Press. ISBN 0-521-21245-6. - ↑ Eden, R. J. (1971). "Regge poles and elementary particles".
*Rep. Prog. Phys*.**34**(3): 995–1053. Bibcode:1971RPPh...34..995E. doi:10.1088/0034-4885/34/3/304. - ↑ Irving, A. C.; Worden, R. P. (1977). "Regge phenomenology".
*Phys. Rep*.**34**(3): 117–231. Bibcode:1977PhR....34..117I. doi:10.1016/0370-1573(77)90010-2. - ↑ G. Ponzano; T. Regge (1968). "Semiclassical limit of Racah coefficients". In Bloch, F. (ed.).
*Spectroscopic and group theoretical methods in physics*. Amsterdam: North-Holland Publ. Co. pp. 1–58. - ↑ "Tullio Regge receives Albert Einstein Award",
*Physics Today*,**32**(5): 82, May 1979, Bibcode:1979PhT....32e..82., doi:10.1063/1.2995565 - ↑ Dirac Medalists 1996 — ICTP Portal
- ↑ MARCEL GROSSMANN AWARDS
- ↑ Pomeranchuk Prize Winners 2001 Archived 2011-07-22 at the Wayback Machine

- Tullio Regge at the Mathematics Genealogy Project
- Tullio Regge on INSPIRE-HEP
- (in Italian)
*L'utopia del progresso a "rischio zero"*, articolo di Tullio Regge su "La Repubblica" (2001) - (in Italian) L'imperdibile intervista a Tullio Regge e Rita Levi-Montalcini, da
*Memoro - la Banca della Memoria* - (in Italian)
*Premi Guilio Natta e Nicolò Copernico*: Tullio Regge, biographical sketch of prize committee member.

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