Physics 234B: String Theory II
Quantum Gravity and Unifications
Spring 2015
Basic Info
Time: lectures: Tue and Thu, 12:402pm.
discussions: TBD.
Place: 402 Le Conte Hall
Instructor:
Petr Hořava
(email: horava@berkeley.edu)
Office: 401 Le Conte Hall.
This year, our focus in the 234B course will be on gravity  both
classical and quantum, how it emerges from string and superstring theory,
whether it can have an independent life outside of strings, how it enters
into various dualities and unifications across different areas of physics
(from supersymmetric unifications with the Standard Model of particle
physics, to unifications with nongravitational physics via the AdS/CFT
correspondence and other dualities, to nonrelativistic Lifshitz gravity and
its relation to the Causal Dynamical Triangulations approach to quantum
gravity, to applications in condensed matter physics). We will also discuss
some of the many fundamental open puzzles of gravity.
More details about the course will be posted here in due time.
Prerequisites
On the gravity side, basics of General Relativity at the level of 231 are
required. On the quantum side, basics of QFT at the level of 232A would be
a good start, and will effectively be required.
On the other hand, basics of YangMills gauge theories (either 233A or 232B)
would also be useful, but will not be strictly required for students who wish
to sign up for this course. Same with the basics of String Theory  it
would be useful and nice to have seen strings (at the level of 234A), but it
will not be formally required in order to take this course. If you are
interested in this course and have questions about having all the
prerequisites, feel free to talk to me (in person or via email); I will try
to be flexible, so that we can accommodate as many students in this course
as possible, even those who come from various diverse backgrounds such as
particle phenomenology, cosmology, condensed matter, or pure math.
Homeworks and Reading Assignments
There will be no homework sets for this course. Instead, there will be a
list of reading assignments, where each student gets to choose one from the
list of many important gravityrelated research papers. Then, in the second
half of the semester, the students will present their summary of the ideas and
results of their chosen paper during our Discussion Sessions. The final grade
will be based on this presentation. There will be no final exam.
horava@berkeley.edu
