dorsal/arxiv
View SchemaElementary thermodynamics of trapped particles
| Authors | Martin Ligare |
|---|---|
| Categories | |
| ArXiv ID | physics/0210055 |
| URL | https://arxiv.org/abs/physics/0210055 |
Abstract
I develop simple thermodynamic relations for a collection of noninteracting classical particles confined in a harmonic trap. The volume of such a trap is not a good thermodynamic variable, so conventional expressions of the first law of thermodynamics and the ideal gas law must be modified. I use the frequency of oscillations about the minimum of the trap as an external parameter characterizing the confinement, and derive elementary relations between particle number, temperature, energy, oscillation frequency, and a generalized pressure, that are analogous to conventional thermodynamic relations for an ideal gas in a rigid volume. I also discuss heat capacities for trapped particles.
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"date_created": "2026-03-02T18:00:42.156000Z",
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"abstract": "I develop simple thermodynamic relations for a collection of noninteracting\nclassical particles confined in a harmonic trap. The volume of such a trap is\nnot a good thermodynamic variable, so conventional expressions of the first law\nof thermodynamics and the ideal gas law must be modified. I use the frequency\nof oscillations about the minimum of the trap as an external parameter\ncharacterizing the confinement, and derive elementary relations between\nparticle number, temperature, energy, oscillation frequency, and a generalized\npressure, that are analogous to conventional thermodynamic relations for an\nideal gas in a rigid volume. I also discuss heat capacities for trapped\nparticles.",
"arxiv_id": "physics/0210055",
"authors": [
"Martin Ligare"
],
"categories": [
"physics.ed-ph",
"physics.gen-ph"
],
"title": "Elementary thermodynamics of trapped particles",
"url": "https://arxiv.org/abs/physics/0210055"
},
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