GATE Physics Exam  >  GATE Physics Videos  >  Quantum Mechanics for GATE  >  Lecture 8: Time Dependent Perturbation Transition Probability

Lecture 8: Time Dependent Perturbation Transition Probability Video Lecture | Quantum Mechanics for GATE - GATE Physics

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FAQs on Lecture 8: Time Dependent Perturbation Transition Probability Video Lecture - Quantum Mechanics for GATE - GATE Physics

1. What is time-dependent perturbation theory?
Ans. Time-dependent perturbation theory is a method used in quantum mechanics to calculate the transition probability between different energy states of a system when an external perturbation is applied that varies with time.
2. How is transition probability calculated in time-dependent perturbation theory?
Ans. Transition probability in time-dependent perturbation theory is calculated using Fermi's Golden Rule, which gives the probability of a system transitioning from an initial state to a final state due to the applied perturbation.
3. What is the significance of transition probability in quantum mechanics?
Ans. Transition probability in quantum mechanics provides information about the likelihood of a system transitioning between different energy states, which is essential for understanding the behavior and dynamics of quantum systems under external influences.
4. How does time-dependent perturbation theory differ from time-independent perturbation theory?
Ans. Time-dependent perturbation theory deals with external perturbations that vary with time, while time-independent perturbation theory focuses on perturbations that are constant. Time-dependent perturbation theory is used when the perturbation is time-varying, such as in interactions with electromagnetic fields.
5. Can time-dependent perturbation theory be applied to real-world systems?
Ans. Yes, time-dependent perturbation theory is a powerful tool that can be applied to a wide range of physical systems, including atomic and molecular interactions, solid-state physics, and quantum optics, to understand and predict their behavior under varying external influences.
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