Event calendar file
3-8 June 2012
Hotel Fiesta Americana
Mexico/General timezone
- pascos2012@pegaso.fisica.unam.mx
Support
Cosmology
Place
Location: Hotel Fiesta Americana
Address: Merida
Yucatan
Mexico
Room: Yucatán
Date:
7 Jun 17:20 - 18:40
Conveners
-
- Marco, Taoso
Timetable | Contribution List
Displaying 4
contributions
out of
4
We observe that the dominant one loop contribution to the graviton propagator in the theory of N (N>>1) light scalar fields \phi_a (with masses smaller than M_{pl}/\sqrt{N}) minimally coupled to Einstein gravity is proportional to N while that of graviton-scalar-scalar interaction vertex is N independent. We use this to argue that the coefficient of the R\phi_a^2 term appearing at one loop level i
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Presented by Dr. Amjad ASHOORIOON
on
7/6/2012
at
22:40
We show that a very light scalar field experiencing quantum fluctuations during primordial inflation can explain the current cosmic acceleration. Provided its mass does not exceed the Hubble parameter today, this field has been frozen during the cosmological ages to start dominating the universe only recently. Assuming this scenario to be correct, and using supernovae data, the model predicts the
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Presented by Dr. Christophe RINGEVAL
on
7/6/2012
at
22:20
We study Higgs inflation in the context of generalized G-inflation, i.e., the most general single-field inflation model with second-order
field equations. The four variants of Higgs inflation proposed so far in the literature can be accommodated at one time in our framework. We also propose yet another class of Higgs inflation, the running Einstein inflation model, that can naturally arise from t
... More
Presented by Masahide YAMAGUCHI
on
7/6/2012
at
23:00
Particle physics models with a large number of fields coupled to general relativity can suffer from a breakdown of perturbative unitarity below the effective Planck scale. This brings into question the validity of their effective field theory descriptions and can indicate the onset of new physics. This talk will discuss these issues and their consequences in the context of large extra dimensions,
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Presented by Mr. Michael ATKINS
on
7/6/2012
at
23:20
