| Issue |
EPJ Web of Conferences
Volume 58, 2013
TM 2012 – The Time Machine Factory [unspeakable, speakable] on Time Travel in Turin
|
|
|---|---|---|
| Article Number | 02005 | |
| Number of page(s) | 8 | |
| Section | The Spacetime Machine: Traveling from Micro to Macro Events | |
| DOI | https://doi.org/10.1051/epjconf/20135802005 | |
| Published online | 05 September 2013 | |
https://doi.org/10.1051/epjconf/20135802005
On the time arrows, and randomness in cosmological signals
Center for Cosmology and Astrophysics, Alikhanian National Laboratory and Yerevan State University, Yerevan, Armenia
a e-mail: gurzadyan@yerphi.am
Published online: 5 September 2013
Arrows of time - thermodynamical, cosmological, electromagnetic, quantum mechanical, psychological - are basic properties of Nature. For a quantum system-bath closed system the de-correlated initial conditions and no-memory (Markovian) dynamics are outlined as necessary conditions for the appearance of the thermodynamical arrow. The emergence of the arrow for the system evolving according to non-unitary dynamics due to the presence of the bath, then, is a result of limited observability, and we conjecture the arrow in the observable Universe as determined by the dark sector acting as a bath. The voids in the large scale matter distribution induce hyperbolicity of the null geodesics, with possible observational consequences.
© Owned by the authors, published by EDP Sciences, 2013
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