In quantum mechanics, "sudden approximation" refers to a simplifying assumption used in certain calculations. It assumes that a process happens so quickly that certain interactions can be neglected or treated as happening instantaneously. This simplification helps in solving quantum mechanical problems
1. What is a sudden approximation?
2. Where is sudden approximation used?
3. When is sudden approximation applied?
4. Why is sudden approximation used in quantum mechanics?
5. Which interactions are neglected in sudden approximation?