The Road goes ever on and on,
Down from the door where it began.
Now far ahead the Road has gone
And I must follow if I can.

Pursuing it with eager feet,
Until it meets some larger way,
Where many paths and errands meet.
  And whither then? I cannot say.

                            - J.R.R. Tolkien



         Welcome!            

I'm a professor in the Physics and Astronomy Department at the University of Southern California. My work involves research and teaching, primarily. I teach both undergraduates and postgraduates. Find out more about those activities by following the links to the far left.

My research (as a member of the Theory Group) focuses on the development of theoretical tools for the description of the basic fabric of Nature. The tools and ideas often have applications in other areas of physics (and mathematics) too - unexpected connections are part of the fun of research! Ultimately I (and the international community of which I am a part) am trying to understand and describe the origin, past, present and future of the Universe. This involves trying to describe its fundamental constituents (and their interactions), as well as the Universe as a dynamical object in its own right. I mainly work on (super)string theory, gravity, gauge theory and M-theory right now, which lead me to think about things like space-time, quantum mechanics, black holes, the big bang, extra dimensions, quarks, gluons, and so forth. See the research page for more.

We're located on the University Park Campus right in the centre of the city of Los Angeles, in California. It is one of the most vibrant cities on the planet, where you can find pretty much everything!

I have a personal blog called Asymptotia, and I write very regularly about many of the things I do (research, work, play) there (among other things). You're welcome to have a look, and even to join in (or start) some of the ongoing conversations with me and/or the community of other readers. You can jump to some of the posts by clicking on the photographs on the right.

Thanks for visiting! -cvj






Department of Physics and Astronomy
University of Southern California
Los Angeles, CA 90089-0484, U.S.A.
Tel: 1-213-821-1772
Fax: 1-213-740-6653
e-mail: johnson1 at usc.edu


picture of Doheny Library on USC campus
working at the board
scenes from USC campus
food from Hollywood Farmer's Market
sleepy me at aspen
food from Hollywood Farmer's Market