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Invisible because sudden Opinion1 #115216 If the jump to low entropy takes place all at once, rather than in steps, it would not be observed. The usual presumption is that such fluctuations will take this form. The paper cited below disputes this (see sibling node).

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Invisible because suddenInvisible because sudden☜If the jump to low entropy takes place all at once, rather than in steps, it would not be observed. The usual presumption is that such fluctuations will take this form. The paper cited below disputes this (see sibling node).☜59C6EF

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Link[1] Out of equilibrium: understanding cosmological evolution to lower-entropy states

En citant: Aguire, Anthony and Carroll, Sean and Johnson, Mathew
Cité par: Peter Baldwin 3:21 AM 11 August 2011 GMT
Citerank: (2) 113880Updated Boltzmann-SchuetzThere have been some recent attempts to combine the basic Boltzmann-Schuetz idea with modern cosmology - especially theories that envisage a multiverse. This overcomes a key defect of Boltzmann-Schuetz - the fact that our observable universe is not old or large enough to provide the fluctuations.959C6EF, 115218Observed by Boltzmann brainOne response to the original Boltzmann-Schuetz hypothesis is that the most probable form in which observers could arise from a low-entropy fluctuation would be as a fully formed brain with a minimal environment. If formed gradually, rather than in one step, it would observe declining entropy.959C6EF
URL:

http://arxiv.org/PS_cache/arxiv/pdf/1108/1108.0417v1.pdf

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It would therefore be useful to better understand the precise nature of these excursions, which are acknowledged but vaguely described in the cosmological literature. It is often imagined that these fluctuations are sudden and dramatic transitions, or that they do not admit any classical description. We will argue that cosmological fluctuations o lower-entropy states should be thought of as the time reverse of a - generally smooth, or at least gradual - natural evolution from a low-entropy state into equilibrium.

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Entrée par: Peter Baldwin
NodeID: #115216
Node type: Position
Date d'entrée (GMT): 8/11/2011 3:20:00 AM
Date de la dernière modification (Heure GMT): 8/11/2011 3:25:00 AM
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