# PHY484H1/1484H Relativity Theory II

## Official description

Applications of General Relativity to Astrophysics and Cosmology. Introduction to black holes, large-scale structure of the universe.

Prerequisite
PHY483H1
Co-requisite
n.a.
Exclusion
n.a.
Recommended preparation
APM346H1/APM351Y1
Textbook
                            ['No required textbook, but full online lecture notes are provided.']

Breadth requirement
BR=5
Distribution requirement
DR=SCI

### Additional information

This course follows on from PHY1483F. We begin by outlining how Einstein's equations can be derived from an action principle from scratch. Applying them, we find the conditions under which gravity is attractive, and describe gravitational lensing. Next, we develop the story of homogeneous isotropic FRW cosmology, and introduce the idea of inflation. Then we discuss aspects of the thermal physics of the early universe. After that, we give an outline of the theory of inflationary perturbations and how they grow over time, and connections to experiment. Next, we turn to introducing black hole thermodynamics, extra dimensions, and alternative theories of gravity. We finish up with a brief introduction to numerical relativity.

course title
PHY484H1/1484H
session
winter
year of study
4th year
time and location
24L: LEC0101, LEC2001, LEC7001, LEC9101: MR10, On Line Synchronous Lectures will be given synchronously via Zoom, and recorded for later (non-public) viewing. Students are encouraged to ask questions during lectures either by typing into the chat or by using using a microphone. A camera may be helpful but is not mandatory.
instructor

#### Delivery Methods

In Person

A course is considered In Person if it requires attendance at a specific location and time for some or all course activities.*.

* Subject to adjustments imposed by public health requirements for physical distancing.

Online - Synchronous
A course is considered Online Synchronous if online attendance is expected at a specific time for some or all course activities, and attendance at a specific location is not expected for any activities or exams.
Asynchronous
A course is considered Asynchronous if it has no requirement for attendance at a specific time or location for any activities or exams.