Abstract:
In this paper, we address the problem of the arrow of time from a cosmological point of view, rejecting the traditional entropic approach that defines the future direction of time as the direction of the entropy increase: from our perspective, the arrow of time has a global origin and it is an intrinsic, geometrical feature of spacetime. Time orientability and the existence of a cosmic time are necessary conditions for defining an arrow of time, which is manifested globally as the time asymmetry of the universe as a whole, and locally as a time-asymmetric energy flux. We also consider arrows of time of different origins (quantum, electromagnetic, thermodynamic, etc) showing that they can be non-conventionally defined only if the geometrical arrow is previously defined.
Registro:
Documento: |
Artículo
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Título: | The cosmological origin of time asymmetry |
Autor: | Castagnino, M.; Lara, L.; Lombardi, O. |
Filiación: | Inst. de Astron./Fis. del Espacio, Casilla de Correos 67, Sucursal 28, 1428 Buenos Aires, Argentina Departamento de Física, Universidad Nacional de Rosario, Av. Pellegrini 250, 2000 Rosario, Argentina CONICET, Universidad de Buenos Aires, Puán 470, 1406 Buenos Aires, Argentina
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Año: | 2003
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Volumen: | 20
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Número: | 2
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Página de inicio: | 369
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Página de fin: | 391
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DOI: |
http://dx.doi.org/10.1088/0264-9381/20/2/310 |
Título revista: | Classical and Quantum Gravity
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Título revista abreviado: | Classical Quantum Gravity
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ISSN: | 02649381
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02649381_v20_n2_p369_Castagnino |
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Citas:
---------- APA ----------
Castagnino, M., Lara, L. & Lombardi, O.
(2003)
. The cosmological origin of time asymmetry. Classical and Quantum Gravity, 20(2), 369-391.
http://dx.doi.org/10.1088/0264-9381/20/2/310---------- CHICAGO ----------
Castagnino, M., Lara, L., Lombardi, O.
"The cosmological origin of time asymmetry"
. Classical and Quantum Gravity 20, no. 2
(2003) : 369-391.
http://dx.doi.org/10.1088/0264-9381/20/2/310---------- MLA ----------
Castagnino, M., Lara, L., Lombardi, O.
"The cosmological origin of time asymmetry"
. Classical and Quantum Gravity, vol. 20, no. 2, 2003, pp. 369-391.
http://dx.doi.org/10.1088/0264-9381/20/2/310---------- VANCOUVER ----------
Castagnino, M., Lara, L., Lombardi, O. The cosmological origin of time asymmetry. Classical Quantum Gravity. 2003;20(2):369-391.
http://dx.doi.org/10.1088/0264-9381/20/2/310