u/Rich_Astronomer9731

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Hi,

I am a current 1st year PhD student working on acoustin measurement for molecules, mostly using Quartz Crystal Microbalance technique.

I know there are many methods to simulate the frequency and dissipation shifts, but from what I have read from literature one of the best is Freq Domain Lattice Boltzman Method.

I knwo there is a famous book from Soringer on Boltzman methid, but it is in time domain, not frequency..

Do you have some suggestion from where I can start?

As simulations, until now I did only DFT, FDTD and some very basics fluidics (Navier stockes).

I hear a lot in the Dft community about research trying to achieve chemical accuracy for different molecules, usually diatomic molecules. How are they trying to achieve this in practice? You can use an usual software like gaussian or orca etc, trying different functionals, cumbining them and so on, or they are making first principle calculations on their own?

Hi,

I am currently a 1st year PhD student, dealing mostly with molecular physics, so a bunch of quantum mechanics.

In most cases, I can approach a problem both analytically at first and then numerically, or numerically from the beginning.

I found that I need to sharpen my skills for both methods, but I do not know which one to approach more in detail, analytical solving or numerically? In the long term which one is more helpful?

I tend to say that acquiring analytical skills is very useful for a physicist, but seeing that nowadays most of the calculations are numerically done, I feel a bit confused.

What is your approach, more analytical or more numerically?

(Question posted on r/PhysicsStudent also)

Hi,

I am currently a 1st year PhD student, dealing mostly with molecular physics, so a bunch of quantum mechanics.

In most cases, I can approach a problem both analytically at first and then numerically, or numerically from the beginning.

I found that I need to sharpen my skills for both methods, but I do not know which one to approach more in detail, analytical solving or numerically? In the long term which one is more helpful?

I tend to say that acquiring analytical skills is very useful for a physicist, but seeing that nowadays most of the calculations are numerically done, I feel a bit confused.

What is your approach, more analytical or more numerically?