N-Body Simulations: Exploring Matter and Dark Matter

[Madster]

Hi.

I read due interest papers in Arxiv. There is many times refereed to so called N-Body Simulations.

Is that for Matter or Dark Matter? How does it work, can someone explain or suggest good readings?

THX

 

[Mordred]

N-body simulations are computer simulations, usually simulating large structure formations and gravitational interactions. However not in all cases. Loosely put it simulates particle interaction and some force

http://www.scholarpedia.org/article/N-body_simulations_(gravitational )

http://physics.princeton.edu/~fpretori/Nbody/intro.htm

 

[Madster]

And it is used because you can't solve it analytically for more than 2 particles? Or is it just a matter of time?

 

[phyzguy]

N-body simulations can include just dark matter (interacting through gravity only), or mixtures of dark matter and ordinary matter(which also interact through other forces). They are used because, as you said, there are no analytic solutions for more than two particles. N-body simulations of galaxies and clusters of galaxies can contain millions or billions of particles.

 

[sardar]

I am happy to see your interest in N-Body simulations. These simulations are used to study the behavior and interactions of a large number of particles, such as stars, galaxies, or even dark matter particles. They are a valuable tool for understanding the evolution and dynamics of complex systems in astrophysics and cosmology.

N-Body simulations can be used to study both matter and dark matter. Matter simulations focus on the interactions between visible particles, while dark matter simulations also include the effects of dark matter particles, which make up about 85% of the total matter in the universe.

In these simulations, the particles are represented by points in a three-dimensional space, and their motions are calculated based on the laws of gravity. The positions and velocities of each particle are updated over time, allowing researchers to study how the system evolves and changes.

If you are interested in learning more about N-Body simulations, I would recommend reading some introductory textbooks on astrophysics or cosmology. Additionally, there are many articles and papers available on Arxiv and other scientific databases that discuss the use and applications of N-Body simulations in different areas of research. I hope this helps and I encourage you to continue exploring this fascinating topic.