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ZTF Twinning predavanja

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10.5.2016. 10:00
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IRB

Dark Matter in Galaxies: a Review

Paolo Salucci Scuola

Internazionale Superiore di Studi Avanzati (SISSA), Trieste, Italy

  • LECTURE 1 - Thursday, May 12, 10.30 a.m. - 12 a.m. Lecture hall, Wing 3
  • LECTURE 2 - Friday, May 13, 10.30 a.m. - 12 a.m. Lecture hall, Wing 1

ABSTRACT

Recent observations have revealed the structural properties of the dark and luminous mass distribution in galaxies. These results led to the vision of a new and amazing sce-nario. The investigation of single and coadded objects has in fact shown that the rotation curves of spirals follow, from their centers out to their virial radii, an universal profile that implies a tuned combination of their stellar disk and dark halo mass distributions. The mass distribution in ellipticals and dwarf spheroidals is found similar. This, alongside with accurate mass modeling of individual galaxies, poses important challenges to the presently theoretically favored LCDM Cosmology.

Particle Physics from Almost-Commutative Spacetimes

Koen Van Den Dungen

Scuola Internazionale Superiore di Studi Avanzati (SISSA), Trieste, Italy

  • LECTURE 1: ALMOST-COMMUTATIVE SPACETIMES - Tuesday, May 10, 10 a.m. - 12 a.m. Lecture hall, Wing 1
  • LECTURE 2: THE LAGRANGIANS - Wednesday, May 11, 2 p.m. - 4 p.m. - Seminar room, Wing 1
  • LECTURE 3: THE (NONCOMMUTATIVE) STANDARD MODEL AND ITS PHE-NOMENOLOGY June 2016 (TBA)

ABSTRACT

The goal of this series of lectures is to explain in detail how one can use Connes' framework of noncommutative geometry to obtain models in particle physics (as clas-sical gauge theories), coupled with gravity. For this purpose it suffices to consider the almost-commutative case, which is constructed as a (commutative) spacetime with a noncommutative (but finite) 'internal space'. This internal space will describe the gauge content of the theory, while the underlying curved spacetime describes the gravitational part.

In the first lecture, I will develop the abstract formalism of almost-commutative spacetimes, and describe their interpretation as gauge theories on the underlying spacetime. In the second lecture, I will explain how one can derive the Lagrangian of the theory from an almost-commutative manifold. In the last lecture, we will have a de-tailed look at the noncommutative description of the full Standard Model, and we will consider the phenomenological consequences of this approach to the Standard Model.

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