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Questions related to Quantum Mechanics
For example:- If we choose a pseudopotential of the kind K.pbe-spn-kjpaw_psl.1.0.0.UPF. Here K denotes Potassium. pbe denotes (Perdew Burke Ernzerhof) recipe of GGA. Similarly how to choose a...
13 August 2020 2,818 4 View
You can provide links with calculation and clear examples of the methods used. I would also like to understand how to take into account a specific potential. How to determine the forbidden zone...
10 June 2020 9,971 2 View
Is the vacuum energy, the energy of the Zero Point state in Quantum Mechanics?
04 June 2020 9,131 2 View
Operator product expansion is made in the deep ultraviolet region. In thermal field theory, it is explicitly shown , that the UV divergence in the quantum corrections does not depend on...
27 May 2020 1,052 2 View
what is the importance of non-commutative geometry, especially in quantum mechanics? In all the approximations used in quantum mechanics we assumed that interaction between electrons...
21 April 2020 9,755 6 View
We have learned in QM the famous U. Principle which is probably the most important thing in this branch. We also have learned that space-time stays together in GR. The problem of measurements...
13 April 2020 1,743 1 View
Dear people in the field of Quantum mechanics, There are many online explanations about the semi-analytical solution for the problem of particle in a 1D finite potential well as well analytical...
21 March 2020 3,331 3 View
Quarks have emerged from the evidence that protons and neutrons are composite particles. This has led to the formulation of the QCD and the "asymptotic freedom" hypothesis. This theoretical...
17 March 2020 6,118 9 View
Consider a system of two particles. The system was prepared (e.g., by some prior measurement) to have zero total spin. Another measurement is made, either immediately after the preparation or at a...
22 February 2020 5,881 4 View
In MRI after applying 90 RF puls magnetic momentum vectors of protons flip to xy plan. I can understand this from classical mechanic point of view. But I cant understand it from quantum mechanic...
29 January 2020 5,294 3 View
Let us consider two boxes of different energies that are separated by a barrier and box 1 is filled with many electrons. The barrier allows the electrons to tunnel from box 1 to the other side...
24 January 2020 8,195 4 View
What is the difference between loop quantum gravity and string theory?
13 January 2020 4,862 6 View
square of amplitude of quantum wave function refers to volumetric probability distribution of a quantum wave-particle. But what does the real and imaginary parts physically mean? or what does the...
01 January 2020 2,072 7 View
Does the negative energy of two-particle quantum-mechanical interaction always mean attraction between these particles?
18 December 2019 4,286 6 View
The diffraction of light has been referred to as its wave quality since it seemed there was no other solution to describe that phenomenon as its particle quality and subsequently, it exhibited...
02 December 2019 8,878 28 View
There are a number of papers that report quantum mechanical electron transport using ferritin, similar to the behavior of quantum dots. See, e.g. Long-range Solid-state Electron Transport...
16 November 2019 1,602 1 View
Why shape of an orbital calculated by solving schrodinger's equation on hydrogen atom is closely followed by other atoms, even when net force on an individual electron is no longer central and...
04 November 2019 9,946 2 View
using de broglie's formula, electron with a drift velocity of few mm/s has de broglie wavelength at radio or microwave frequency range. Does this have any significant implication. i.e....
04 November 2019 4,517 3 View
Solving Schrödinger equation numerically we will have finite size matrix, which has finite number of eigenvalues, that is - discrete spectrum. But we know, that atoms also have continuous...
03 November 2019 9,126 3 View
When two excited carbon dioxide molecules collide will one of them emit a photon, or will both? As I understand it, collisions between two molecules can result in one becoming excited, or an...
18 October 2019 1,397 3 View
Assuming that particle consists of a photon that moves circularly in the loop, creating standing wave obeying the rule that its closed path 2*Pi*R=n*Lambda (1) (resonator where resonator length...
16 October 2019 8,969 12 View
Hi I am following a paper "Development of CHARMM-Compatible Force-Field Parameters for Cobalamin and Related Cofactors from Quantum Mechanical Calculations". In this paper they used charmm force...
26 September 2019 8,246 7 View
Since there is wave-particle duality, double slit experiment, Heisenberg's uncertainity, Schrodinger's electron probability formula, photon entaglement with more than speed of light, too many...
26 September 2019 9,513 2 View
I'm simulating rare earth complexes using Gaussian and DFT. I've been using B3lyp/LanL2DZ for the metal and it should work for any element between La and Bi according to literature and the...
06 September 2019 2,028 3 View