Why do we use Monte Carlo in order to calculate the VEV?

  • Thread starter Thread starter HighOnAcid
  • Start date Start date
  • Tags Tags
    Monte carlo
HighOnAcid
Messages
2
Reaction score
0

Homework Statement


It's not homework.
It's just a simple question occurred when I'm reading Monte Carlo method in QFT by Colin Morningstar.
Of course, I didn't study the QFT earlier. I'm just a regular(or retarded) undergraduate student and I just wanted to learn MCMC technique, and hoped to learn some applications of MCMC in physics.
I thought I got the basic idea and already programmed the first example of SHO.
However, I noticed he didn't provide proper motivation for MCMC method in order to evaluate vacuum expectation.
He provided exact solution of SHO deduced from the path-integral by hand.

So, I am wondering now. Why do we have to use MCMC to calculate the VEV, if we are able to calculate exact integral?


Homework Equations





The Attempt at a Solution



I thought about path integral from what kind of action cannot be calculated.
It rules out actions from constant potential, harmonic potential, and Coulomb potential.

It's my first posting in this site. If I am violating some kind of rules of this site, please let me know.
 
Physics news on Phys.org
Never mind. It was stupid question.
I think I got the answer.
 

Thread 'Modeling a graph that shows age in relation to depth of an ice sample'

To solve this, I first used the units to work out that a= m* a/m, i.e. t=z/λ. This would allow you to determine the time duration within an interval section by section and then add this to the previous ones to obtain the age of the respective layer. However, this would require a constant thickness per year for each interval. However, since this is most likely not the case, my next consideration was that the age must be the integral of a 1/λ(z) function, which I cannot model.
View full post »

Similar threads

A Monte Carlo to compute uncertainties, why report the mean and SD?
Replies
2
Views
1K
Uncertainty calculation for calculating pi using Monte Carlo integration
Replies
5
Views
7K
A Calculating higher order terms for Electron Anomalous Magnetic Moment
Replies
6
Views
1K
I Why Monte Carlo Simulations? What do they tell us?
Replies
9
Views
2K
How to Calculate Correlation Time Using Numpy for Monte Carlo Simulations?
Replies
1
Views
2K
Why Does Multiplying by 20 Correct My Monte Carlo Integration Result?
Replies
1
Views
1K
A Least-squares calculation with a pinch of weights and monte-carlo
Replies
2
Views
1K
Python Monte Carlo error calculation PYTHON
Replies
1
Views
3K
Computing integral using Monte Carlo method
Replies
12
Views
2K
A How to practically perform first-principles calculations on Li-ion batteries?
Replies
0
Views
2K

Hot Threads

Recent Insights

Back
Top