Killing spinor
Okay, kiddo, let's talk about something called spinors. Spinors are part of a branch of mathematics called linear algebra, which helps us understand things like vectors and matrices.
Now, imagine you have a toy top, and you spin it on the floor. As the top spins, it has a property called spin, which tells you how fast it's spinning and which direction it's spinning in. A spinor is kind of like a toy top, because it has a property called spin too!
But spinors aren't physical objects like tops. They're actually mathematical objects that help us describe particles in physics, like electrons or photons.
Now, sometimes we want to do some fancy math with spinors, but we run into a problem: some spinors can't do certain things. It's kind of like how you might not be able to do a certain dance move because your body just can't do it.
So sometimes, we "kill" these stubborn spinors by doing something called "projecting" them. It's like saying "sorry, spinor, you can't come to this party. You're not invited." We do this so we can focus on the spinors that are willing to cooperate with us.
In summary, kiddo, a killing spinor is a spinor that we "kill" or exclude from certain mathematical calculations because they can't do what we need them to do.
Now, imagine you have a toy top, and you spin it on the floor. As the top spins, it has a property called spin, which tells you how fast it's spinning and which direction it's spinning in. A spinor is kind of like a toy top, because it has a property called spin too!
But spinors aren't physical objects like tops. They're actually mathematical objects that help us describe particles in physics, like electrons or photons.
Now, sometimes we want to do some fancy math with spinors, but we run into a problem: some spinors can't do certain things. It's kind of like how you might not be able to do a certain dance move because your body just can't do it.
So sometimes, we "kill" these stubborn spinors by doing something called "projecting" them. It's like saying "sorry, spinor, you can't come to this party. You're not invited." We do this so we can focus on the spinors that are willing to cooperate with us.
In summary, kiddo, a killing spinor is a spinor that we "kill" or exclude from certain mathematical calculations because they can't do what we need them to do.