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bio website anuars.wordpress.com
location Mexico
age
visits member for 1 year, 10 months
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Graduate Physics Student.

Institute of Physics.

Department of Complex Systems.

National Autonomous University of Mexico (UNAM).

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


Aug
17
awarded  Notable Question
Jul
2
awarded  Curious
Jun
6
awarded  Popular Question
Apr
17
comment What is the formula for max kinetic and max potential energy of a spring?
That's exactly the meaning of my $x$.
Apr
2
comment Weird resistor patterns
What's the definition of "total resistance"?
Apr
1
awarded  Popular Question
Jan
26
comment Is it possible to affect the trajectory of a black hole?
You are right. The black hole, like any object with mass, conserve the linear and angular momentum in absence of external forces and torques.
Nov
30
comment What prevents an atom's electrons from “collapsing” onto its protons?
I'd say that is because the energy is "quantized". The electron's energy can't have any value, it can only have a multiple of the elementary energy $h \nu$.
Nov
27
comment Radial Wave Function for Spherical Squared Well Potential and $S$-Matrix
@Trimok you are right! Could you please write this as an answer so I can choose it like the best answer. Also, could you suggest me a basic book (bachelors level) where I can find more about the $S$-Matrix (or "$S$-Function") in this context, please?
Nov
27
asked Radial Wave Function for Spherical Squared Well Potential and $S$-Matrix
Nov
21
comment Equations of motion for a pendulum in 3D?
All seems good. Just a question, where is $ \dot \theta$ in the last expression?
Nov
14
awarded  Popular Question
Nov
4
awarded  Yearling
Oct
31
awarded  Tumbleweed
Oct
29
comment Terminal Velocity Question
Just a simple mistake. You forgot a sign in the first integral. The argument of the integral should be $v/(kv^2-g)$. And maybe you should check that $h>0$ holds.
Oct
29
accepted Angular Momentum of Two Non-interacting Particles
Oct
29
comment Angular Momentum of Two Non-interacting Particles
You are right. I arrived to the same conclusion while traveling in the subway xD As you say $\dot r <0$ while they are getting closer and $\dot r >0$ after passing the closest distance $b$. So there is a change of sign in $\dot r$, i.e. it must be a zero of $\dot r$ somewhere. This point is precisely when $r=b$. Thanks!
Oct
28
comment Angular Momentum of Two Non-interacting Particles
OK. I understand that. But why is $\dot r =0$ when $r=b$? [Argument a)]
Oct
28
asked Angular Momentum of Two Non-interacting Particles
Oct
25
accepted Is it possible to reach lower temperatures than the Boyle temperature in de van der Waals equation?