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Physics

Questions tagged [computational-physics]

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The bridge between theoretical and experimental physics which utilizes numerical analysis, specifically through the use of software, to solve problems in physics. This tag is NOT intended for use in solving problems on paper. Please note that details of writing and/or debugging code is OFF-TOPIC and should be asked at either Computational Science, Code Review or Stack Overflow.

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Interested to calculate TDM of a molecule in the presence of a dielectric. What is the go-to way right now in research circles?
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I am having a hard time figuring out what the correct rotating-wave approximation (RWA) should be in a two-tone spectroscopy simulation. Apologies in advance for this being an easy question, I work ...
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Assume a structure of identical unit-mass point particles forming a two-dimensional perimeter (such as a ring), and the only force acting on the structure is the gravitational interaction between the ...
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Consider the equation:$$\partial_tu=D\partial_{xx}^2u$$with reflecting boundary condition at $x=0$ and with $u(x,0)=\delta(x)$ as an initial distribution.First question: How should I understand a ...
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I recently started using COMSOL for wave optics simulations and tried to think about how I would implement a numerical simulation to achieve the same results. I quickly realized this scenario was more ...
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I read the Wiki page about the reweighting procedure as a way to use Monte Carlo methods with the sign problem, but I'd like to know more about how this could be implemented in the Metropolis ...
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I have an extremely efficient way to compute the structure constants of the quantum cohomology rings of partial flag varieties (which are modeled by quantum (parabolic) Schubert polynomials, the three-...
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I am creating a program that calculates orbital mechanics. And one option I want is the ability to use as a starting point the current positions of the Solar System. So is there a site that can I use ...
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In Ab Initio Molecular Dynamics (AIMD), we often visualize the evolution of the electron density as a continuous charge distribution that changes over time as the nuclei move. This gives us a powerful ...
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I am digging a bit intoGeant4 physics and its behavior. I am making some plots of the values for the photoelectric cross-section used by ...
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I have currently inputted the full Dirac equation for a free electron in space in Desmos. However, I haven't been able to find a good way to represent it. Singular spinors can be represented by hopf ...
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I have a set of 2 variables $f_1,f_2$, on the Domain of 1+1 spacetime $\{t,x\}$ and a set of PDEs with multiple terms of mixed 2nd-order partial-differentials.$$\partial_t{f_1} = F_1(f_1,f_2, \...
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Premise: In the long-wavelength limit, decoherence is modeled with a master equation for the evolution of the density matrix,$$\frac{\partial \rho(x,x',t)}{\partial t} = -\frac{\mathrm{i}}{2m}\Bigg(\...
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Position of missile = PThrust vector = TTime = tGravity vector = gI have a simulation on desmos where I have an AIM-9 sidewinder and am trying to make an accurate simulation with atmospheric drag ...
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I am developing a finite-difference numerical scheme for solving the Fokker–Planck equation. The scheme is validated by comparing its solutions with histograms constructed from trajectories of the ...

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