In superstring theory, each state may be represented in many ways, depending on how the ground state is defined. Each representation is called a picture, and is denoted by a number, such as 0 picture or −1 picture.
The difference between the ground states is according to the action of the superghosts oscillators on them, and the number of the picture (plus 1/2) reflects the highest superghost oscillator which does not annihilate the ground state.
Famous quotes containing the word picture:
“I hate cheap pictures. I hate pictures that make people look like they’re not worth much, just to prove a photographer’s point. I hate when they take a picture of someone pickin’ their nose or yawning. It’s so cheap. A lot of it is a big ego trip. You use people as props instead of as people.”
—Jill Freedman (b. 1939)