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
29-03-17
Wednesday
A. Van Proeyen
KU Leuven
Conformal symmetry and Supergravity: Einstein equations and currents
Abstract
Conformal symmetry is the maximal spacetime symmetry. Nearly 50 years ago Callan-Coleman-Jackiw wrote a historical paper where the properties of conserved currents of conformal-invariant actions where clarified. Supergravity was found 40 years ago, and played since then an important role in the developments of quantum theories with gravity as in superstring theory. Considering supergravity as a broken superconformal theory lead to many insights in the structure of supergravity. We review these developments and report on a recent investigation on the Einstein equation and conserved currents in a supergravity theory from the conformal point of view.
Aula S
15:00
05-04-17
Wednesday
G. Villadoro
ICTP Trieste
The Power of Series
Abstract
After a small review on divergent series and Borel resummation I will discuss a geometric approach based on Picard-Lefschetz theory to study the interplay between perturbative and non-perturbative effects in the QM path integral. Such approach can be used to characterize when the perturbative series gives the full answer and when the inclusion of non-trivial saddles--instantons--is mandatory. I will then show how a simple deformation of the original perturbation theory allows to recover the full non perturbative answer from the perturbative coefficients alone, without the need of including instanton corrections. I will illustrate this technique in examples which are known to contain non-perturbative effects, such as the (supersymmetric) double-well potential, the pure anharmonic oscillator, and the perturbative expansion around a false vacuum
Aula S
15:00
12-04-17
Wednesday

TBAAula S
15:00

Pheno Coffees

Date Speaker Title Room
&Time

Theory Lunch

Date Speaker Title Room
&Time
28-03-2017
Tuesday
Niccolo CribioriNon-linear realizations and constrained superfieldsAula R
14:00

Other Events

Date Speaker Title Room
&Time