Can someone explain how does one go from frequency domain noise to multipole domain ?

I want mathematical answers.

07 August 2019 8,087 2 View

What is the difference between Hubble sphere,particle horizon and event horizon ?

Please explain conceptually

31 December 2017 3,950 0 View

What determines the speed of sound in inflation models woth non canonical terms?

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11 December 2016 5,896 0 View

What is the physical meaning of anti commutation operators in quantum mechanics?

Physical meaning of commutation operators are understood.

05 June 2016 1,644 6 View

If kinetic energy is a scalar then why does it change under galilean transformation?

.

01 February 2015 2,381 0 View

Does one need to genius in theoretical physics or can hrd work make him successful?

.

01 February 2015 3,602 1 View

What mathematical back ground is required to learn string theory

.

11 December 2014 8,086 0 View

Does one have to be absolute genius like edward witten to shine in theoretical physics?

I dont think so there is something like genius or is it

10 November 2014 2,043 2 View

Why we dont talk about forces in quantum mechanics?

10 November 2014 2,926 1 View

Is the schrodinger equation a postulate of quantum mechanics or can it be derived?

I think it can be derived.

08 September 2014 2,425 22 View

How to resolve Gaussian error termination " Error termination via Lnk1e in F:\G16W\l103.exe" for TS(QST3)?

When I run the job for TS(QST3) in gaseous phase, it was completed without any error. But when I add water in CPCM model it terminated with an error: Inconsistency: ModMin= 2 Eigenvalue=...

21 February 2021 3,198 2 View

How to calculate the Atomic Polar Tensor using DFT ?

Dear friends, I am a beginner at DFT calculation. I have done a structure optimization using DFT- B3LYP/6-31G*, Nevertheless, I don't know How to calculate the Atomic Polar Tensor (APT) in...

17 February 2021 9,082 3 View

Access to supercomputer resources in India?

Hello everyone, I want to perform some gaussian calculations and want to use Materials studio for my research work. Can anyone guide me how to get access to supercomputer resources in India for...

15 February 2021 8,264 3 View

Is there any effective FEM solver to perform simulation of balloon inflation with large deformation (e.g. 300% strain)?

Hi! Thank you for your time, attention, and support. I am currently using FEM solver Abaqus to perform a set of balloon inflation simulations, trying to understand the deformation shape, stress,...

14 February 2021 2,524 4 View

Why we use feature normalization before using the Gaussian kernel in SVM?

Support vector machine

09 February 2021 6,405 3 View

Does Gaussian 09W software take too long to give a result if we have a large chemical structure ?

DFT - gaussviev - gaussian09W - HOMO - LUMO

08 February 2021 6,012 5 View

How to calculate enthalpy of formation of Polymers taking into account the terminal end groups?

I am trying to find methods for theoretical calculation of enthalpy of formation of Polymers. till now I have found the oligomeric method (Gaussian) which uses the extrapolation of results from...

05 February 2021 9,707 4 View

How to identify when a gaussian program is about terminate normally?

Dear all, I am trying to optimize a bimetallic complex using # opt=tight b3lyp/lanl2dz scf=qc geom=connectivity. The program is running for around 5 days but the size of the .chk remains same...

05 February 2021 8,721 3 View

I have started a gaussian calculations for DFT analysis of phytochemical, it is showing a error 2070?

I am doing optimization of a phytochemical but when i submitted the file for calculations it shows error 2070. Can anyone please tell me what does it mean? and what should i do to solve it. I have...

30 January 2021 7,932 1 View

Does the power law behavior can be approximated with Gaussians?

In epidemiology, earthquakes, tokamak disruptions etc., there is possibility of approximations with the sequence of Gaussians and with the appropriate risks ( see my papers in Journal of Fusion...

26 January 2021 5,411 5 View