dorsal/arxiv
View SchemaThe cosmological origin of time-asymmetry
| Authors | Mario Castagnino, Luis Lara, Olimpia Lombardi |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0211162 |
| URL | https://arxiv.org/abs/quant-ph/0211162 |
| DOI | 10.1088/0264-9381/20/2/310 |
| Journal | Class.Quant.Grav. 20 (2003) 369-392 |
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 space-time. Time orientability and 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.
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"abstract": "In this paper we address the problem of the arrow of time from a cosmological\npoint of view, rejecting the traditional entropic approach that defines the\nfuture direction of time as the direction of the entropy increase: from our\nperspective, the arrow of time has a global origin and it is an intrinsic,\ngeometrical feature of space-time. Time orientability and existence of a cosmic\ntime are necessary conditions for defining an arrow of time, which is\nmanifested globally as the time-asymmetry of the universe as a whole, and\nlocally as a time-asymmetric energy flux. We also consider arrows of time of\ndifferent origins (quantum, electromagnetic, thermodynamic, etc.) showing that\nthey can be non-conventionally defined only if the geometrical arrow is\npreviously defined.",
"arxiv_id": "quant-ph/0211162",
"authors": [
"Mario Castagnino",
"Luis Lara",
"Olimpia Lombardi"
],
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"quant-ph"
],
"doi": "10.1088/0264-9381/20/2/310",
"journal_ref": "Class.Quant.Grav. 20 (2003) 369-392",
"title": "The cosmological origin of time-asymmetry",
"url": "https://arxiv.org/abs/quant-ph/0211162"
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