Seminars

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Our group hosts several different weekly activities. We have a series of regular seminars on Wednesdays at 15:00 in Room S named High Energy Theory Seminars (orange in the calendar), replaced by Theory Colloquia (yellow) once per month.
We also have informal discussions on Tuesdays in Room R, alternating between the Pheno-Coffee (pink) and the Theory-lunch (green).

If you have iCal, you can have our seminars added automatically to your calendars by subscribing (⌥⌘S) to the address http://active.pd.infn.it/g4/jccal.php.


Calendar of next month's seminars



High Energy Theory Seminars and Theory Colloquia

Date Speaker
(Affiliation)
Title Room
&Time
16-05-12
Wednesday
Federico Piazza
APC, Paris Center for Cosmological Physics
Spontaneous Symmetry Probing
Abstract
I will give account of two recent papers and ongoing projects in which the general implications of symmetries in the case of time-dependent field states are studied. In particular, I will be interested in field configurations that spontaneously "probe" the symmetry - or one of the symmetries - in the sense that they evolve in time along a symmetry direction in field space. This situation should capture certain essential features of generic early Universe inflationary models without committing too much with their microphysical details. The same formalism applies also to other - apparently disparate - situations, such as many-body systems at finite chemical potential.
Aula S
15:00
23-05-12
Wednesday
Emiliano Sefusatti
ICTP
Testing the initial conditions with the Large-Scale Structure of the Universe: The galaxy power spectrum, the bispectrum and the interesting case of Quasi-Single Field Inflation
Abstract
The possible detection of a non-Gaussian component in the initial condition of the Universe could provide crucial information on the physics of inflation. While current constraints on non-Gaussian parameters are still consistent with the Gaussian hypothesis, the Planck satellite will soon significantly improve these limits. In case of detection, a confirmation from different observables, as for instance the galaxy distribution, will be required. I will review the basic effects of non-Gaussian initial conditions on the evolution of the large-scale structure of the Universe, paying specific attention to how they affect the nonlinear growth, both of the matter power spectrum and higher-order correlation functions as well as the corrections induced to linear and nonlinear galaxy bias. In addition, I will present in detail the case of the Quasi-Single Field model of inflation, characterized by a quite rich phenomenology in terms of its observational consequences.
Aula S
15:00
30-05-12
Wednesday

Aula S
15:00
06-06-12
Wednesday
Erik Tonni
SISSA
TBAAula S
15:00

Pheno Coffees

Date Speaker Title Room
&Time

Theory Lunch

Date Speaker Title Room
&Time