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Double simple-harmonic-oscillator formulation of the thermal equilibrium of a fluid interacting with a coherent source of phonons
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Defacio, B. Brander, O. Vannevel, Alan |
| Copyright Year | 1993 |
| Description | A formulation is given for a collection of phonons (sound) in a fluid at a non-zero temperature which uses the simple harmonic oscillator twice; one to give a stochastic thermal 'noise' process and the other which generates a coherent Glauber state of phonons. Simple thermodynamic observables are calculated and the acoustic two point function, 'contrast' is presented. The role of 'coherence' in an equilibrium system is clarified by these results and the simple harmonic oscillator is a key structure in both the formulation and the calculations. |
| File Size | 525675 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930018153 |
| Archival Resource Key | ark:/13960/t9t19xg5b |
| Language | English |
| Publisher Date | 1993-01-01 |
| Access Restriction | Open |
| Subject Keyword | Thermodynamics And Statistical Physics Thermodynamics Sound Waves Wave Propagation Coherent Radiation Stochastic Processes Radiation Sources Quantum Mechanics Phonons Thermal Noise Thermodynamic Equilibrium Harmonic Oscillators Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
