Definitions for diabatic
di·a·bat·ic

Princeton's WordNetRate this definition:0.0 / 0 votes

1. diabaticadjective

   involving a transfer of heat

   "a diabatic process"

WiktionaryRate this definition:0.0 / 0 votes

1. diabaticadjective

   describing a process that involves the gain or loss of heat, and a change in entropy

WikipediaRate this definition:0.0 / 0 votes

1. Diabatic

   One of the guiding principles in modern chemical dynamics and spectroscopy is that the motion of the nuclei in a molecule is slow compared to that of its electrons. This is justified by the large disparity between the mass of an electron and the typical mass of a nucleus and leads to the Born–Oppenheimer approximation and the idea that the structure and dynamics of a chemical species are largely determined by nuclear motion on potential energy surfaces. The potential energy surfaces are obtained within the adiabatic or Born–Oppenheimer approximation. This corresponds to a representation of the molecular wave function where the variables corresponding to the molecular geometry and the electronic degrees of freedom are separated. The non separable terms are due to the nuclear kinetic energy terms in the molecular Hamiltonian and are said to couple the potential energy surfaces. In the neighbourhood of an avoided crossing or conical intersection, these terms cannot be neglected. One therefore usually performs one unitary transformation from the adiabatic representation to the so-called diabatic representation in which the nuclear kinetic energy operator is diagonal. In this representation, the coupling is due to the electronic energy and is a scalar quantity that is significantly easier to estimate numerically. In the diabatic representation, the potential energy surfaces are smoother, so that low order Taylor series expansions of the surface capture much of the complexity of the original system. However strictly diabatic states do not exist in the general case. Hence, diabatic potentials generated from transforming multiple electronic energy surfaces together are generally not exact. These can be called pseudo-diabatic potentials, but generally the term is not used unless it is necessary to highlight this subtlety. Hence, pseudo-diabatic potentials are synonymous with diabatic potentials.

ChatGPTRate this definition:0.0 / 0 votes

1. diabatic

   Diabatic refers to a process, especially in atmospheric science, that involves the transfer or exchange of heat or energy between different regions or parts of a system, often resulting in temperature changes. Diabatic processes can include factors such as radiation, convection, and condensation. The term contrasts with "adiabatic," which refers to a process where no heat or energy is exchanged with the environment.

WikidataRate this definition:3.0 / 1 vote

1. Diabatic

   Diabatic in quantum chemistry, the potential energy surfaces are obtained within the adiabatic or Born-Oppenheimer approximation. This corresponds to a representation of the molecular wave function where the variables corresponding to the molecular geometry and the electronic degrees of freedom are separated. The non separable terms are due to the nuclear kinetic energy terms in the molecular Hamiltonian and are said to couple the potential energy surfaces. In the neighbourhood of an avoided crossing or conical intersection, these terms cannot be neglected. One therefore usually performs one unitary transformation from the adiabatic representation to the so-called diabatic representation in which the nuclear kinetic energy operator is diagonal. In this representation, the coupling is due to the electronic energy and is a scalar quantity which is significantly easier to estimate numerically. In the diabatic representation, the potential energy surfaces are smoother, so that low order Taylor series expansions of the surface capture much of the complexity of the original system. However strictly diabatic states do not exist in the general case. Hence, diabatic potentials generated from transforming multiple electronic energy surfaces together are generally not exact. These can be called pseudo-diabatic potentials, but generally the term is not used unless it is necessary to highlight this subtlety. Hence, pseudo-diabatic potentials are synonymous with diabatic potentials.

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1. • Physics

How to pronounce diabatic?

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Numerology

1. Chaldean Numerology

   The numerical value of diabatic in Chaldean Numerology is: 8

2. Pythagorean Numerology

   The numerical value of diabatic in Pythagorean Numerology is: 4

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=diabatic
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Diabatic
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Diabatic
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=diabatic