The global arrow of time as a geometrical property of the universe
Traditional discussions about the arrow of time in general involve the concept of entropy. In the cosmological context, the direction past-to-future is usually related to the direction of the gradient of the entropy function of the universe. But the definition of the entropy of the universe is a ver...
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2003
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| LEADER | 08130caa a22007577a 4500 | ||
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| 001 | PAPER-21521 | ||
| 003 | AR-BaUEN | ||
| 005 | 20241205083912.0 | ||
| 008 | 190411s2003 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-0042788799 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Castagnino, Mario Alberto | |
| 245 | 1 | 4 | |a The global arrow of time as a geometrical property of the universe |
| 260 | |c 2003 | ||
| 270 | 1 | 0 | |m Castagnino, M.; CONICET, Inst. de Astron. y Fis. del Espacio, Casilla de Correos 67, 1428, Buenos Aires, Argentina; email: mariocastagnino@citynet.net.ar |
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| 504 | |a H. Price, op. cit., p. 88; Halliwell, J.J., Quantum cosmology and time asymmetry (1994) Physical Origins of Time Asymmetry, , J. J. Halliwell, J. Perez-Mercader, and W. H. Zurek, eds. (Cambridge University Press, Cambridge) | ||
| 504 | |a Castagnino, M., Giacomini, H., Lara, L., Dynamical properties of the conformally coupled FRW model (2000) Physical Review D, 61, p. 107302 | ||
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| 506 | |2 openaire |e Política editorial | ||
| 520 | 3 | |a Traditional discussions about the arrow of time in general involve the concept of entropy. In the cosmological context, the direction past-to-future is usually related to the direction of the gradient of the entropy function of the universe. But the definition of the entropy of the universe is a very controversial matter. Moreover, thermodynamics is a phenomenological theory. Geometrical properties of space-time provide a more fundamental and less controversial way of defining an arrow of time for the universe as a whole. We will call the arrow defined only on the basis of the geometrical properties of space-time, independently of any entropic considerations, "the global arrow of time." In this paper we will argue that: (i) if certain conditions are satisfied, it is possible to define a global arrow of time for the universe as a whole, and (ii) the standard models of contemporary cosmology satisfy these conditions. |l eng | |
| 536 | |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas | ||
| 536 | |a Detalles de la financiación: We are extremely grateful to Roberto Torretti and Fred Kronz for their encouragement and stimulating comments. This paper was supported by grants of CONICET and of Secretaria de Estado de Educación y Uni-versidades de España. | ||
| 593 | |a CONICET, Inst. de Astron. y Fis. del Espacio, Casilla de Correos 67, 1428, Buenos Aires, Argentina | ||
| 593 | |a CONICET, Depto. de Filosofia de la Ciencia, Universidad Autonoma de Madrid, Ctra. Colmenar Km 15, 28049, Madrid, Spain | ||
| 593 | |a Departamento de Física, Universidad Nacional de Rosario, Av. Pellegrini 250, 2000, Rosario, Argentina | ||
| 700 | 1 | |a Lombardi, O. | |
| 700 | 1 | |a Lara, L. | |
| 773 | 0 | |d 2003 |g v. 33 |h pp. 877-912 |k n. 6 |p Found. Phys. |x 00159018 |w (AR-BaUEN)CENRE-4780 |t Foundations of Physics | |
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