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:
“When you’ve been blind as long as I have, you learn to see through your senses. I can’t explain it exactly, but you get a feeling about people when you meet them. You see a picture of them in your mind. Not just what they look like, but what they really are. You see them much more clearly than you do with your eyes. Maybe that’s why they say looks are deceptive.”
—George Bricker. Jean Yarbrough. Helen Page (Jane Adams)