1,721,282 research outputs found
Giorgio Parisi, un Nobel oltre la ricerca.
No full textIl profilo scientifico e culturale del Premio Nobel per la Fisica del 2021, il Prof Giorgio Parisi, viene presentato insieme al suo impegno nella difesa della ricerca in Itali
A scientific portrait of Giorgio Parisi: complex systems and much more
No full textThis article summarises the outstanding scientific career of Giorgio Parisi, who was awarded the 2021 Nobel Prize in Physics, with special emphasis on his contributions to the description of the equilibrium properties of disordered systems
Giorgio Parisi : The Nobel Prize in Physics 2021
No full textGiorgio Parisi awarded with the Nobel Prize in Physics 2021 "for the discovery of the interplay of disorder and fluctuations in physical systems from atomic to planetary scales". We are happy to congratulate Professor Parisi with this award and the recognition of his great scientific achievements. G. Parisi is a member of the Editorial Board of this journal - p-Adic Numbers, Ultrametric Analysis and Applications. In this note, we present a brief review of some his remarkable research ideas and related developments, in particular along ultrametric modeling.</p
Field theory, disorder and simulations
No full textThis volume is a collection of lectures and selected papers by Giorgio Parisi on the subjects of Field Theory (perturbative expansions, nonperturbative phenomena and phase transitions), Disordered Systems (mainly spin glasses) and Computer Simulations (lattice gauge theories).The basic problems discussed in the Field Theory section concern the interplay between perturbation theory and nonperturbative phenomena which are present when one deals with infrared or ultraviolet divergences or with nonconvergent perturbative expansions. The section on Disordered Systems contains a complete discussio
I meriti scientifici del premio Nobel Giorgio Parisi
Full text linkAnche se la cosa non appare chiaramente nella breve motivazione del premio Nobel per la Fisica del 2021, il riconoscimento a Parisi ha sì radici estremamente estese, ma ha il suo nucleo in un
gruppo di risultati che Giorgio Parisi ha pubblicato, a tambur battente (perché capiva bene le enormi potenzialità della sua scoperta) fra il 1979 e il 19801-6. In questi lavori viene introdotta quella
che poi sarà nota come "la teoria di Parisi", o la teoria RSB (Replica Symmetry Breaking, o rottura della simmetria delle repliche). Si tratta di un esempio tipico di "ricerca per curiosità", tanto cara a
Parisi, e cioè di una ricerca che all'inizio non muove da alcuna prospettiva applicativa, che nasce perché si ha un bel problema da risolvere e non gli si può resistere, e che poi, a volte, come in questo caso, porta a un impatto anche applicativo enorme
Multisurface coding simulations of the restricted solid-on-solid model in four dimensions
Full text linkAbstract: We study the restricted solid-on-solid model for surface growth in spatial dimension d = 4 by means of a multisurface coding technique that allows us to analyze samples of size up to 256(4) in the steady-state regime. For such large systems we are able to achieve a controlled asymptotic regime where the typical scale of the fluctuations are larger than the lattice spacing used in the simulations. A careful finite-size scaling analysis of the critical exponents clearly indicate that d = 4 is not the upper critical dimension of the model
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Programmazione Scientifica
No full textLibro di testo per corsi universitari di programmazione e calcolo. Prefazione di Giorgio Parisi.
ISBN 10: 8871922425
ISBN 13: 978887192242
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