# Questions tagged [simulations]

The tag has no usage guidance.

832 questions
Filter by
Sorted by
Tagged with
9 views

### Trying to determine physically meaningful initial conditions for test particle around a Kerr black hole

I am working on some code for a test particle orbiting a Kerr black hole. I am trying to determine what the initial $\frac{d t}{d\tau}$ would be. On Wikipedia https://en.wikipedia.org/wiki/...
34 views

### Does Hubble constant $H$ change with time in $N$-body simulations?

In $N$-body simulations, there is a Hubble constant $H$ in equation of motion. when we integrate the equation of motion, does this constant H also change with the simulation time? or it is just a ...
11 views

59 views

58 views

### Computational Physics Books [duplicate]

I'm really interested on how to simulate physical systems that I'm currently studying as a first year student at University. For example, how to replicate a Pendulum using different algorithms (Euler'...
58 views

### What is the easiest way to do basic mechanical simulations? [closed]

I am interested in doing basic mechanical simulations, such as experimenting with the brachistochrone problem (path of quickest descent) and the motion of point particles under the influence of ...
18 views

### protein simulation question

for simulating a globular protein that has a diameter of 100Åin a cubic box of side length L, water adjacent to the protein is very different from bulk water. I want the periodic replicas of the ...
27 views

26 views

### How to simulate the formation of chemical bonds by calculating electrodynamic forces?

I had the idea recently that if the interactions between atoms could be calculated, that a large enough computer could simulate biological processes. What would I need to know to simulate something ...
49 views

### How to implement periodic boundary conditions in a $n$-body simulation

I implemented a vanilla $n$-body simulation for educational purposes. As was to be expected, a point cloud collapses towards the middle of the simulation if the particles have zero initial velocity. ...
90 views

### What does it mean to simulate a quantum system?

What does it mean by simulating quantum system? Can I simulate Young's double slit experiment with a quantum computer? If yes, won't it violate no-cloning theorem?
14 views

### Intensity increase in Monte Carlo radiative transfer simulations (in case of Rayleigh scattering)?

I came across something weird (at least for me) while looking at the Müller matrix for Rayleigh-scattering. If I see it correctly, for some scattering angles, it can actually increase the intensity up ...
102 views

### Why a quantum computer simulation is not a quantum computer?

Is it because the inability to generate true random numbers (I dont think so) in the host machine or something else? My understanding is that the ability to emulate a quantum computer in a ...
59 views

### Physics Simulation of a Simple Pendulum with Drag Forces

I am working on simulating a simple pendulum with present drag forces. My task is to use numerical methods (I am using Verlet integrator) to estimate the angle as a function of time, as well as the ...
I am trying to integrate the rotational motion of a rigid body (a set of N point masses) $\textbf{in the inertial frame}$, but my results seem totally wrong. What of the following steps could be wrong?...