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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
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
Año:2003
Volumen:20
Número:2
Página de inicio:369
Página de fin:391
DOI: http://dx.doi.org/10.1088/0264-9381/20/2/310
Título revista:Classical and Quantum Gravity
Título revista abreviado:Classical Quantum Gravity
ISSN:02649381
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