183 reputation
10
bio website anuars.wordpress.com
location Mexico
age
visits member for 1 year, 10 months
seen Aug 27 at 4:07

Graduate Physics Student.

Institute of Physics.

Department of Complex Systems.

National Autonomous University of Mexico (UNAM).

$$\mathcal{H}(s_{1},...,s_{N})=-\frac{J}{N}\sum_{1\leq i<j\leq N}s_{i}s_{j}-H\sum_{i=1}^{N}s_{i}$$


Jul
2
awarded  Curious
Jun
5
accepted Commutation between Logarithm and Gaussian Integral.
Jun
3
answered Commutation between Logarithm and Gaussian Integral.
Jun
3
comment Commutation between Logarithm and Gaussian Integral.
You forgot the $1/2$ in the exponential when $n=0$. BTW i already found a solution to my problem. In a moment I'l be posting it. As I said it's an approximation.
Jun
3
comment Commutation between Logarithm and Gaussian Integral.
Yes but there is some technique in this field that works for our proposes. First we consider $n$ as integer but then we take the limit $n \to 0$. Some kind of analytic continuation. So if (1) is approximately equal to (2) I'd be happy!
Jun
3
comment Commutation between Logarithm and Gaussian Integral.
@MarcvanLeeuwen What about under some approximations? In the practice I'll take the limit $n \to 0$
Jun
3
revised Commutation between Logarithm and Gaussian Integral.
added details of the question and equaiton
Jun
3
comment Commutation between Logarithm and Gaussian Integral.
I see. I forgot to ask if 1 ys close to 2 even under an approximation. After the integral I'll take the limit n->0.
Jun
3
comment Commutation between Logarithm and Gaussian Integral.
@MarcvanLeeuwen I know, but if you see the expression (2), is not a sum of logarithms because of the Gaussian factor is outside the Log.
Jun
3
comment What is the number of the solution of the following equation a+b+c+d+e = 18?
You mean the number of solutions?
Jun
3
asked Commutation between Logarithm and Gaussian Integral.
Mar
29
accepted Functional form of a solution to a Differential Equation (Euler-Lagrange)
Mar
28
comment Functional form of a solution to a Differential Equation (Euler-Lagrange)
Wait! Are you saying that due to the RHS of my (3) equation is a function of $(q,\dot q, t)$ then the coefficients of $\ddot q_b$ in the LHS of (3) must be zero? (i.e. we have to have a function of $(q,\dot q, t)$ in the LHS as well). And the same argument for my (5) equation?
Mar
28
comment Functional form of a solution to a Differential Equation (Euler-Lagrange)
OK. I just have a question. What do you mean with "generate"? "none of the partials can generate a $\ddot q_b$"
Mar
28
comment Probability distribution of a function of a random variable $P(y(x))$
Can you recommend me another, please? I can't find it anywhere.
Mar
28
asked Functional form of a solution to a Differential Equation (Euler-Lagrange)
Mar
21
comment Probability distribution of a function of a random variable $P(y(x))$
Thanks for the answer, could you please recommend me a book for reviewing this concepts in more detail, in preference the book should not be so formal, I'm just a physicist. Thanks, again.
Mar
14
asked Probability distribution of a function of a random variable $P(y(x))$
Mar
12
accepted How to interchange a sum and a product?
Mar
11
comment How to interchange a sum and a product?
I tried to do this but I failed. I found an answer though.