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Harmonic oscillator - Vibration energy of molecules 1. Definitions
Harmonic oscillator - Vibration energy of molecules 1. Definitions

... For instance, the electronic absorption spectra (UV-vis) are characteristic of the electronic states that will be studied during the second semester. The microwave absorption spectroscopy gives insight into the rotation of the molecules and, using a simple model, where the molecule is a rigid rotato ...
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Topological Insulators
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Lectuer 15
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... determined completely by m through L z = m ħ. - The quantum number m is called the magnetic quantum number because the energy of a hydrogen atom in a magnetic field depends on m. - The (2 Ɩ + 1) – fold degeneracy in the absence of a magnetic field is split into 2 Ɩ + 1 different energies in the pres ...
Central potential
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... where L̂2 is the operator associated to the square of the angular momentum - see Eq. (8.19). The reduced mass µ and the radius of the molecule re are constants that define the physical system under study: different diatomic molecules have different reduced masses, or sizes. Note that the wave function ...
Lecture 1
Lecture 1

... • Observations -Quantum theory may be more than a way of modeling the physical world… it may be a more accurate representation of reality than the physical objects we currently believe to exist -Quantum theory may be an imperfect representation of a physical world that we don’t yet understand -Our a ...
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What is matter? - National Superconducting Cyclotron Laboratory

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“Elegant Universe” Part One “Einstein`s Dream”

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Derivation of the Nonlinear Schrödinger Equation from First Principles

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New geometric concepts in the foundations of physics

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The Ghost in the Atom, Ed. by P.C.W. Davies and J.R. Brown

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SAND Quantum Theory of What

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Is there a preferred canonical quantum gauge?

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... 400 B.C. – Democritus, a Greek philosopher, developed the first atomic theory. He believed that matter was made up of tiny particles called atoms. He also believed that matter could not be created, destroyed, or further divided. His theory was met with criticism from other influential philosophers s ...
Can the vacuum energy be dark matter?
Can the vacuum energy be dark matter?

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Scalar field theory

In theoretical physics, scalar field theory can refer to a classical or quantum theory of scalar fields. A scalar field is invariant under any Lorentz transformation.The only fundamental scalar quantum field that has been observed in nature is the Higgs field. However, scalar quantum fields feature in the effective field theory descriptions of many physical phenomena. An example is the pion, which is actually a pseudoscalar.Since they do not involve polarization complications, scalar fields are often the easiest to appreciate second quantization through. For this reason, scalar field theories are often used for purposes of introduction of novel concepts and techniques.The signature of the metric employed below is (+, −, −, −).
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