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Titolo:
Some demographic crashes seen as phase transitions
Autore:
Gligor, M; Ignat, M;
Indirizzi:
Coll Roman Voda, Dept Phys, Roman 5550, Neamt, Romania Coll Roman Voda Roman Neamt Romania 5550 Phys, Roman 5550, Neamt, Romania Univ Al I Cuza, Fac Phys, Iasi 6660, Romania Univ Al I Cuza Iasi Romania6660 Al I Cuza, Fac Phys, Iasi 6660, Romania
Titolo Testata:
PHYSICA A
fascicolo: 1-4, volume: 301, anno: 2001,
pagine: 535 - 544
SICI:
0378-4371(200112)301:1-4<535:SDCSAP>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
OPINION FORMATION; MODELS;
Keywords:
renormalization group; power law; critical exponent; social phenomena;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Gligor, M Coll Roman Voda, Dept Phys, Str M Eminescu 4, Roman 5550, Neamt,Romania Coll Roman Voda Str M Eminescu 4 Roman Neamt Romania 5550 omania
Citazione:
M. Gligor e M. Ignat, "Some demographic crashes seen as phase transitions", PHYSICA A, 301(1-4), 2001, pp. 535-544

Abstract

The purpose of this paper is the application of a usual method of statistical mechanics-the renormalization based on Wilson's recursive relations-in order to study the critical behavior of a social index, namely the live births per 1000 population. The drastic decreases of this index on certain periods have the specific features of the phase transitions as they follow approximately power laws and also, they lead to the complete change of the population age structure. The values of the critical exponents that are obtained by fitting the experimental data referring to some East European countries are in agreement with the value resulting from the theoretical approach,thus showing the universality of the power law behavior in the vicinity ofthe critical points, for complex social systems. (C) 2001 Elsevier ScienceB.V. All rights reserved.

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Documento generato il 09/04/20 alle ore 07:36:15