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Paolo Di Vecchia ( * October 29 1942 in Terracina) is an Italian theoretical physicist who worked in the field of elementary particle physics, quantum field theory and string theory. Di Vecchia graduated at the University of Rome with Bruno Touschek in 1966. As a post-doctoral researcher he worked at the Nuclear Research Center in Frascati (where a permanent position was offered to him) and spent two years at the Massachusetts Institute of Technology and the CERN. In 1974 he became Assistant Professor at the NORDITA in Copenhagen. In 1978 he came back for a year at CERN, from 1979 became professor at the Free University of Berlin and from 1980 to 1986 he taught at the Bergische Universität Wuppertal . From 1986 he was at the NORDITA as a professor. Since the NORDITA moved to Stockholm he spent half of the time there and half of the time at the Niels Bohr Institute in Copenhagen. ==Pioneering works on string theory== In the 1970s he was one of the pioneers of string theory. Among other things, he formulated with Lars Brink and other locally supersymmetric Lagrangian for fermionic strings (i.e. those with fermionic excitations, half-integer spin). Previously, the Nambu - Goto action had been known for the bosonic string (according to Yoichiro Nambu, Tetsuo Goto ) and different groups tried a fermionic action to construct. In 1972 with Emilio Del Giudice and Sergio Fubini, he formulated the DDF Model which is named by the initials of the three scientists. With Stanley Deser and Bruno Zumino he formulated〔Deser , Zumino '' A complete action for the spinning string '' , Physics Letters B , Volume 65 , 1976, p 369〕 string theory as a two-dimensional analogue of the general theory of relativity (with Reparametrisierungsinvarianz the effect on the two-dimensional world sheet '' '' (World Sheet)). Afterwards he turned his investigations into instantons in quantum field theory and other things; He returned to string theory in 1981 with the publication of the works by Alexander Polyakov who used the effect of Di Vecchia and colleagues for the quantization of strings, then known as the Polyakov action. In the 2000s he focused on expansion of the AdS / CFT correspondence on low supersymmetric and non-conformal gauge theories,〔(Di Vecchia, Liccardo , Marotta , Pezzella '' The Gauge / Gravity Correspondence for Non- Supersymmetric Theories '' , advances in physics , Volume 53 , 2005, pp. 450-455 )〕〔(.org/abs/hep-th/0403216 Di Vecchia '' N = 1 super YM from D branes '' , NORDITA 2004 )〕〔(0212162 non conformal gauge theories from '' D '' branes , lectures Ahrenshoop 2002 )〕 the construction of four-dimensional effective Lagrangians for low energies from the compactification of magnetised D- Brane supply models (which are also chiral representations, as in Fermionenspektrum the Standard Model be observed)〔(Di Vecchia '' Discussing string extensions of the Standard Model in D brane world'', QCD 2008 Montepellier )〕 and high-energy scattering of closed strings in framework of the theory of D-branes . Since 1994, he organized Scandinavian conferences for string theory at NORDITA. In 2003 he became a member of the Royal Danish Academy of Sciences. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Paolo Di Vecchia」の詳細全文を読む スポンサード リンク
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