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Participant |
Garattini, Remo | |||||||
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Institution |
University of Bergamo - Viale Marconi 5 - Dalmine(Bergamo) - - Italy | |||||||
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Session |
EU1 |
Accepted |
Yes |
Order |
9 |
Time |
16:30 | 15' |
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Talk |
Oral abstract |
Title |
The Distorted Wheeler-DeWitt Equation | |||||
| Coauthors | ||||||||
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Abstract |
Even if a full and complete theory of Quantum Gravity and Quantum Cosmology is absent, the Wheeler- DeWitt equation appears as a natural instrument for the quantization of the gravitational field. In this context we setup a Sturm-Liouville problem with the cosmological constant considered as the associated eigenvalue. We will discuss the effects of some modifications of General Relativity, like Gravity's Rainbow and Horava-Lifshitz theory on the Wheeler-DeWitt Equation. An application to inflation will be discussed. |
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Pdf file |
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Session |
AT3 |
Accepted |
Yes |
Order |
3 |
Time |
15:20 | 25' |
|
Talk |
Oral abstract |
Title |
Gravity's Rainbow and Traversable Wormholes | |||||
| Coauthors | Francisco S.N. Lobo | |||||||
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Abstract |
In the context of Gravity's Rainbow, we compute the graviton one-loop contribution to a classical energy in a traversable wormhole background. The form of the shape function considered is obtained by the equation of state p = ωρ. The investigation is evaluated by means of a variational approach with Gaussian trial wave functionals. Instead of using a regularization/renormalization process, we will use the distortion induced by Gravity's Rainbow to handle with divergences. A comparison with previous work is presented. |
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Pdf file |
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Session |
BH4 |
Accepted |
Yes |
Order |
18 |
Time |
17:50 | 10' |
|
Talk |
Oral abstract |
Title |
Rainbow's Stars | |||||
| Coauthors | Mandanici, Gianluca | |||||||
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Abstract |
In the context of the modification induced by Gravity's Rainbow, we show that, in certain conditions the energy density obtained by quantum fluctuations of the vacuum can be interpreted as a Dev-Gleiser model for a compact star. Application to the Tolman-Oppenheimer-Volkoff equations are also presented. |
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Pdf file |
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