Unit ASTROPARTICLE AND COSMOLOGY

Course
Physics
Study-unit Code
GP005514
Location
PERUGIA
Curriculum
Fisica delle particelle elementari
Teacher
Nicola Tomassetti
Teachers
  • Nicola Tomassetti
Hours
  • 42 ore - Nicola Tomassetti
CFU
6
Course Regulation
Coorte 2021
Offered
2022/23
Learning activities
Affine/integrativa
Area
Attività formative affini o integrative
Academic discipline
FIS/05
Type of study-unit
Opzionale (Optional)
Type of learning activities
Attività formativa monodisciplinare
Language of instruction
Italian or English if foreign students will be attending the lectures.
Contents
Introduction to the general relativity and the Einstein equations for the gravitational field. The cosmological problem: the Friedmann-Lemaitre equations, cosmological models and the Big-Bang theory. Cosmological paramenters: astrophysical and astro-particle experimental observations for their measurement. Physics of the early universe.
Reference texts
Bergstrom & Goobar, Cosmology and Particle Astrophysics. Weinberg, Gravitation and Cosmology. Grupen, Astroparticle Physics. Handouts and notes are made available to the students along the teaching period on the Unistudium online platform.
Educational objectives
The main objective of this course is to give an up-to-date overview of the most significant models used to describe the evolution of the universe as well as to give a flavour of the current challenges and open issues in the field. Connections between the cosmological problem and fundamental particle physics are evidentiated both from the theoretical and the experimental point of view.
Prerequisites
A basic knowledge of special relativity and particle physics are highly desirable in order to fully understand and to know how to tackle the course.
Teaching methods
Lectures of 2 hours.
Other information
Even if not strictly mandatory, attendance to the lectures is highly recommended.
Learning verification modality
The exam consists of a 45'-60' interview with question on the different topics addressed in the lectures.
Extended program
Summary of special relativity. Energy-Momentum tensor definition. Introduction to general relativity, Robertson-Walker metric, Friedmann-Lemaitre equations, energy, radiation and matter balance in the universe. Cosmologic models and parameters. The ¿CDM model. Cosmography: definition of redshift and deceleration parameter of the RW metric, astrophysical observation of the geometrical properties of the universe. The Big-Bang model: the phases of the primordial universe evolution. Introduction to inflation, nucleosynthesis, recombination. The rise of the background cosmic radiation. The dark matter problem and the asymmetry matter-antimatter. Astroparticle physics with cosmic rays, neutrinos, gamma rays.
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