Phonon number fluctuations in Debye model of solid

Q. Chen; X. Wang; Q.H. Liu

Results in Physics (Dec 2019)

Phonon number fluctuations in Debye model of solid

Q. Chen,
X. Wang,
Q.H. Liu

Affiliations

Q. Chen: School for Theoretical Physics, School of Physics and Electronics, Hunan University, Changsha 410082, China
X. Wang: School for Theoretical Physics, School of Physics and Electronics, Hunan University, Changsha 410082, China
Q.H. Liu: School for Theoretical Physics, School of Physics and Electronics, Hunan University, Changsha 410082, China; Synergetic Innovation Center for Quantum Effects and Applications (SICQEA), Hunan Normal University, Changsha 410081, China; Corresponding author at: School for Theoretical Physics, School of Physics and Electronics, Hunan University, Changsha 410082, China.

Journal volume & issue: Vol. 15

Abstract

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The mean numbers and the fluctuations for phonons in the Debye model of solid are calculated. When the temperatures are higher and lower in comparison with the characteristic one determined by the Debye cutoff frequency, the mean numbers are proportional to the temperature and temperature cubed, respectively, meanwhile, the fluctuations are proportional to the temperature squared and temperature cubed, respectively.

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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