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Item 1 of 1
Item 1 of 1
LAP Lambert Academic Publishing
Gravity beyond General Relativity:
SR 277
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SR16Per Month/24 months
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About this Product
General Relativity represents the pillar of our understanding of gravity and it is well tested in the Solar System. It is also able to explain the observed large-scale phenomenology as long as there is a Cosmological Constant and Cold Dark Matter. Nevertheless one needs to understand why the observed Cosmological Constant is so small if compared with the expected theoretical value, and of course to detect Dark Matter. Moreover, General Relativity shows theoretical problems in the ultraviolet regime because it is not renormalizable. Therefore, in the last decades a lot of theories and toy models have been proposed in order to solve some of the most intriguing open problems at the scales where gravity plays a fundamental role. An important constraint in this endeavor is Lovelocks theorem, which does single out General Relativity and does not leave much room for modifying it. My work has focused on two directions. On the latter I have considered Hořava gravity, which breaks Lorentz invariance. On the other I have explored the possibility to circumvent Lovelocks theorem by adding extra auxiliary fields, which are nondynamical extra fields.
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