
Course unit
COSMOLOGY OF THE EARLY UNIVERSE
SCP7081761, A.A. 2019/20
Information concerning the students who enrolled in A.Y. 2018/19
ECTS: details
Type 
ScientificDisciplinary Sector 
Credits allocated 
Educational activities in elective or integrative disciplines 
FIS/05 
Astronomy and Astrophysics 
6.0 
Course unit organization
Period 
First semester 
Year 
2nd Year 
Teaching method 
frontal 
Type of hours 
Credits 
Teaching hours 
Hours of Individual study 
Shifts 
Lecture 
6.0 
48 
102.0 
No turn 
Prerequisites:

Generally the bases useful to attend this course are provided by the various courses within a given chosen curriculum. 
Target skills and knowledge:

Aim of the course is to provide the student with the necessary tools to understand and analyze the main issues dealing with the physics of the Early Universe, both from a theoretical modeling point of view and from an observational point of view. Particular attention will be devoted to the most updated research topics within this research field. 
Examination methods:

Oral exam 
Assessment criteria:

Acquisition of the basic concepts of the course, ability of the student to elaborate in an original and independent way the concepts acquired, capacity of reasoning and of applying the tools provided by the course. 
Course unit contents:

General introduction. The problem of the initial conditions: primordial density perturbations at the origin of the formation of the Large Scale Structure of the Universe.
 Short recall of the main problems of the standard cosmological model
 Inflationary cosmology in the Early Universe as a solution to the problems of the standard model
Modeling:
 Inflationary models: vacuum energy and the inflation field; dynamics of a scalar field in a FriedmanRobertsonWalker Universe; possible realizations of the inflationary scenario
 Cosmological models of inflation and main features of the models within highenergy particle physics
 Observational predictions of the inflationary models: from the quantum perturbations in an expanding universe to the primordial density perturbations; generation of primordial gravitational waves and their observability (cosmological and interferometric probes).
Reheating phase and baryogengesis mechanisms
DeltaN and inin formalisms for the study of cosmological perturbations. Example: primordial nonGaussianity
Cosmological perturbations in General Relativity:
 scalar, vector and tensor perturbations
 gauge transformations
 Einstein equations linearly perturbed around the RobertsonWalker metric
Observational tests of the Early Universe 
Planned learning activities and teaching methods:

Lectures with a proposal of exercises and examples 
Additional notes about suggested reading:

The relevant parts of the course will be clearly identified in the various textbooks and notes of the teacher will be available for various parts of the course.
For some topics specific references in the literature will also be provided for those students who eventually want to have some further details. 
Textbooks (and optional supplementary readings) 

Andrew R Liddle and David H Lyth, The Primordial Density Perturbation. : Cambridge University Press, 2009.

Andrew R Liddle and David H Lyth, Cosmological Inflation and LargeScale Structure. : Cambridge University Press, 2000.

Kolb, E.W. and Turner, M.S., The Early Universe. Redwood City: AddisonWesley, 1990.

Innovative teaching methods: Teaching and learning strategies
 Lecturing
 Problem based learning
 Case study
 Interactive lecturing
 Questioning
 Story telling
 Problem solving
 Loading of files and pages (web pages, Moodle, ...)
 Learning journal
Innovative teaching methods: Software or applications used

