MG14 - Talk detail |
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Participant |
Viaggiu, Stefano | |||||||
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Institution |
Tor Vergata University, math dep. - Via della ricerca scientifica 1 - Rome - Italy - Italy | |||||||
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Session |
QF1 |
Accepted |
Yes |
Order |
3 |
Time |
15:30 | 20' |
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Talk |
Oral abstract |
Title |
A Quantum Friedmann Flat Spacetime: Uncertainty Relations, Thermodynamics And Some Cosmological Consequences | |||||
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Abstract |
This talk is devoted to the study of physically motivated Friedmann flat spacetime uncertainty relations (STUR). The physical meaning of these new STUR is discussed together with some cosmological implications. An interesting link between the Principle of ''gravitational stability against localization of events'' (PGSL) and the Bekenstein entropy bound (leading to the well know Black Hole entropy) is also investigated. The same theorems used to write down our new STUR can be used to generilize the Bekenstein-Hawking entropy formula to Friedmann universes. This generilized Bekenstein-Hawking entropy, thanks to the holographic principle, can be applied to the apparent horizon of our universe to obtain some interesting thermodynamic equations for the whole visible universe. Finally, these thermodynamic equations can be used to discuss some cosmological issues together with their relation with a quantum Friedmann spacetime. |
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Pdf file |
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