Seminari & Eventi

Laurea Magistrale

When: Wednesday, September 25, 2019 - 15:00

Laurea

When: Thursday, September 26, 2019 - 15:00

Jets, TMDs and resummation

Speaker:
Prof. Wouter Waalevjin
University of Amsterdam
When: Wednesday, October 9, 2019 - 14:30
Where: Dipartimento di Fisica - Aula 501

Abstract:

Seminario di fenomenologia

 I will discuss my recent calculation of the jet shape, which describes the angular distribution of energy in a jet, comparing to data from the Large Hadron Collider a new method I proposed to extract the transverse momentum distribution of quarks and gluons in the proton, using jets in semi-inclusive deep-inelastic scattering the resummation of multiple logarithms, considering the simultaneous measurement of beam thrust and the transverse momentum of the Z boson in the Drell-Yan process as a concrete example.


The quantum effective action, external sources and a new exact RG equation

Speaker:
Dr Peter Millington
University of Nottingham
When: Wednesday, October 16, 2019 - 14:30
Where: Dipartimento di Fisica - Aula 601

Abstract:

Seminario di fisica teorica

The effective action is a powerful tool for studying the non-perturbative behaviour of quantum field theories.  In this talk, we will revisit the derivation of the so-called two-particle-irreducible effective action, paying particular attention to the role of the sources that appear in its definition.  Working in the context of zero-dimensional quantum field theory, we will be able to accompany this derivation with a graphical and pedagogical exposition of the behaviour of the effective action, and its various ingredients.  With this intuitive understanding, we will then be able to show that we have much greater control over the effective action than has perhaps previously been realised, and we will be able to use the sources to map between different realisations of the effective action and to preserve symmetry properties in its truncations.  Finally, by associating the two-point source of the effective action with the regulator of the renormalisation group evolution, we will arrive at an exact flow equation that differs fundamentally from the well-known Wetterich-Morris-Ellwanger equation.  We will conclude by commenting on the potential implications of our results and highlighting possible future directions.


Charting the phase diagram of QCD3

Speaker:
Dr Riccardo Argurio
University of Bruxelles
When: Wednesday, October 23, 2019 - 14:30
Where: Dipartimento di Fisica - Aula 601

Laurea

When: Thursday, October 24, 2019 - 15:00

Laurea Magistrale

When: Wednesday, October 30, 2019 - 15:00

Laurea Magistrale

When: Wednesday, November 27, 2019 - 15:00

Laurea

When: Thursday, January 16, 2020 - 15:00

Laurea Magistrale

When: Wednesday, February 12, 2020 - 15:00

Laurea

When: Thursday, February 20, 2020 - 15:00

Laurea Magistrale

When: Wednesday, March 25, 2020 - 15:00

Laurea

When: Thursday, March 26, 2020 - 15:00

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