Tagged Questions

Subdiscipline of theoretical physics which consists in the study of physics problems using numerical algorithms. PLEASE NOTE that questions about computational methods and/or programming are OFF-TOPIC on Physics.SE.

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Efficient weak form for numerically generating a static magnetic field from arbitrary current distribution (FEM)

This may stray into computational physics, but I'm curious to know if there is some more efficient way for what I am trying to do. Perhaps a better gauge formulation is needed. Consider two ...
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Please explain this project to me [closed]

I've been struggling with this project for a few months now and I frankly can't break out of my way of thinking. The questions I'm struggling with understanding are written down below. The questions ...
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Total eigenvalues [closed]

I have a program as shown below: ...
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Meaning of $\nabla_{\mathbf{p}_k} W(\mathbf p, h)$ in PBF

I'm reading this paper on Position Based Fluids and I couldn't understand the meaning of $\nabla_{\mathbf{p}_k} W(\mathbf{ p_i - p_j}, h)$ in the equation 7 (see below). …the gradient of the ...
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Young's modulus graphene nanoribbons [closed]

How to calculate volume and young's modulus in graphene nanoribbons? How to calculate second derivative Total energy on the strain? Band structure of graphene nano-ribbons is the code below: ...
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Why don't hexapods gallop?

I haven't observed any terrestrial hexapods that gallop like agile tetrapods(cheetahs/horses). Instead, I've observed that all of them scuttle which constrains their maximum velocity. And after ...
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Heat transfer in solidification of cylindrical billet

I am trying to plot IN MATLAB the temperature profile of solidification of metal in manufacture of cylindrical billets. The metal is solidifying and the billet moves downwards as a constant water ...
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Computational scaling of quantum and classical Monte Carlo algorithms

How does the computational complexity of finding an equilibrium thermal state for a given Hamiltonian at a given temperature scale with system size under classical and quantum Monte Carlo? I know ...
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System that is more efficient to simulate than to compute

I know some physics calculations require alot of computing to solve. Are there currently systems where it is more logical to do an experiment to "let the universe simulate the experiment for us" and ...
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How to plot numerically the wave functions according to the Hamiltonian?

It is often difficult to analytically solve the Schrodinger equation, and so we need to obtain a solution numerically. An example plot is shown below. Here, the wave functions for a three junction ...
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What is the best order of learning mathematics before start Monte Carlo Methods for Physics simulation? [closed]

I doing medical physics masters and hope to start my research in Monte Carlo methods to simulate some particle interaction and hence to calculate some unknown physical quantities ( Stopping power and ...
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Mathematica code for self-consistent field loop in Hartree-Fock method

I want to write a Mathematica code for Hartree-Fock treatment of helium (or hydrogen molecule-> namely two electrons systems) , but I don't know how to write a loop for self consistent field procedure....
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Modelling a flow due to an oscillating hemisphere?

Say I have a long cylinder filled with air, closed at one end and open at the other. Now say I place a compressible hemisphere at the closed end and make it oscillate (compression and expansion of the ...
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Simulation of plasma in tokamak

I am reading some papers on numerical algorithms for simulation of plasma in the context of nuclear fusion in a tokamak. I am getting a little lost as there is a huge number of references, and it is ...