Abstract:
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.
Registro:
Documento: |
Artículo
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Título: | The global arrow of time as a geometrical property of the universe |
Autor: | Castagnino, M.; Lombardi, O.; Lara, L. |
Filiación: | CONICET, Inst. de Astron. y Fis. del Espacio, Casilla de Correos 67, 1428, Buenos Aires, Argentina CONICET, Depto. de Filosofia de la Ciencia, Universidad Autonoma de Madrid, Ctra. Colmenar Km 15, 28049, Madrid, Spain Departamento de Física, Universidad Nacional de Rosario, Av. Pellegrini 250, 2000, Rosario, Argentina
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Año: | 2003
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Volumen: | 33
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Número: | 6
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Página de inicio: | 877
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Página de fin: | 912
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DOI: |
http://dx.doi.org/10.1023/A:1025665410999 |
Título revista: | Foundations of Physics
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Título revista abreviado: | Found. Phys.
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ISSN: | 00159018
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00159018_v33_n6_p877_Castagnino |
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Citas:
---------- APA ----------
Castagnino, M., Lombardi, O. & Lara, L.
(2003)
. The global arrow of time as a geometrical property of the universe. Foundations of Physics, 33(6), 877-912.
http://dx.doi.org/10.1023/A:1025665410999---------- CHICAGO ----------
Castagnino, M., Lombardi, O., Lara, L.
"The global arrow of time as a geometrical property of the universe"
. Foundations of Physics 33, no. 6
(2003) : 877-912.
http://dx.doi.org/10.1023/A:1025665410999---------- MLA ----------
Castagnino, M., Lombardi, O., Lara, L.
"The global arrow of time as a geometrical property of the universe"
. Foundations of Physics, vol. 33, no. 6, 2003, pp. 877-912.
http://dx.doi.org/10.1023/A:1025665410999---------- VANCOUVER ----------
Castagnino, M., Lombardi, O., Lara, L. The global arrow of time as a geometrical property of the universe. Found. Phys. 2003;33(6):877-912.
http://dx.doi.org/10.1023/A:1025665410999