Question

in quantum mechanics, if a system is known to be in a pure state |a> at...

in quantum mechanics, if a system is known to be in a pure state |a> at time t=t0, then do we know the exact results of a measurment of a variable performed at t=t0 on the system without looking at the reaults ? or do we inly know the statistical distribution even though we know the state of the system?
Science   Advanced-Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
if a system is in a quantum pure state |a> then would the expected value be...
if a system is in a quantum pure state |a> then would the expected value be the eigenvalue? meaning if we know that the system is in the pure state |a>, then can we predict exactly the outcome of the measurement of the observable X ? which is <a|X|a> ?
Quantum mechanics: Consider a particle initially in the ground state of the one-dimensional simple harmonic oscillator....
Quantum mechanics: Consider a particle initially in the ground state of the one-dimensional simple harmonic oscillator. A uniform electric field is abruptly turned on for a time t and then abruptly turned off again. What is the probability of transition to the first excited state?
Quantum mechanics problem: Consider a particle initially in the ground state of the one-dimensional simple harmonic...
Quantum mechanics problem: Consider a particle initially in the ground state of the one-dimensional simple harmonic oscillator. A uniform electric field is abruptly turned on for a time t and then abruptly turned off again. What is the probability of transition to the first excited state?
More than one distinct quantum state of a system can have a particular value of energy....
More than one distinct quantum state of a system can have a particular value of energy. Here we remember to count all the states in figuring out the probability that a small system has a particular energy value. The molecule can be in one of six states. It exchanges energy with a thermal reservoir of other molecules at a temperature T. State 1 has EA, states 2 and 3 each have energy EB = 3EA, and states 4,5, and 6...
In this problem we are interested in the time-evolution of the states in the infinite square...
In this problem we are interested in the time-evolution of the states in the infinite square potential well. The time-independent stationary state wave functions are denoted as ψn(x) (n = 1, 2, . . .). (a) We know that the probability distribution for the particle in a stationary state is time-independent. Let us now prepare, at time t = 0, our system in a non-stationary state Ψ(x, 0) = (1/√( 2)) (ψ1(x) + ψ2(x)). Study the time-evolution of the probability...
For Central Limite Theorem, if n>30, we say the sampling distribution is normal. However, most of...
For Central Limite Theorem, if n>30, we say the sampling distribution is normal. However, most of the time, with population standard deviation unknown, we still have to use t value to compute a confidence interval. But I wonder for normal distribution(z distribution), even though we do not know population sd, why cannot we use z value directly to compute confidence interval, as it has stated in central limit theorem that the distribution is normal.
(a). State TWO contrasts between Pure Project Teams and Matrix Project Teams. Give an example of...
(a). State TWO contrasts between Pure Project Teams and Matrix Project Teams. Give an example of each. 3(b). The following data relates to the activities required for a project. Since exact duration for each activity is not known for certain, three time estimates were made, namely: - the optimistic, most likely and pessimistic time estimates. The precedence relationships are also shown in the data below. You will need to analyze this problem using what you learned in Chapter 18 of...
An article in the San Jose Mercury News stated that students in the California state university...
An article in the San Jose Mercury News stated that students in the California state university system take 4.5 years, on average, to finish their undergraduate degrees. Suppose you believe that the mean time is longer. You conduct a survey of 43 students and obtain a sample mean of 5.1 with a sample standard deviation of 1.2. Do the data support your claim at the 1% level? Note: If you are using a Student's t-distribution for the problem, you may...
Briefly state the basic characteristics of pure competition, pure monopoly, monopolistic competition, and oligopoly. Under which...
Briefly state the basic characteristics of pure competition, pure monopoly, monopolistic competition, and oligopoly. Under which of these market classifications does each of the following most accurately fit? (a) a supermarket in your hometown; (b) the steel industry; (c) a Kansas wheat farm; (d) the commercial bank in which you or your family has an account; (e) the automobile industry. In each case justify your classification. “Even if a firm is losing money, it may be better to stay in...
Does taking ginkgo tablets (i.e., and extract from a tree species) twice a day provide significant...
Does taking ginkgo tablets (i.e., and extract from a tree species) twice a day provide significant improvement in mental performance? To investigate this issue, a researcher conducted a study with 150 adult subjects who took ginkgo tablets twice a day for a period of 6 months. At the end of the study, 200 variables related to the mental performance of the subjects were measured on each subject and the means compared to known means for these variables in the population...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT