The Formulation of Phonon as the Result of Second Quantization of Crystalline Lattice Vibration Using Wave Functional Method

Abstract:

Phonon is undoubtedly one of the most important concepts in the physics of materials. Phonon is the result when we quantize vibrational field. Whereas Schrodinger’s wave function method is the most popular and intuitive method in doing the first quantization, one usually uses Heisenberg’s operator method in the second quantization. We feel that there is a methodological and pedagogical discontinuity here. So in this paper we will use Schrodinger’s wave functional method to quantize the lattice vibration to produce phonons. Wave functional is difficult due to the nondenumerably infinite number of dimensions of its domain. In this paper we will approximate this infinity through the discrete nature of crystalline lattice so that phonon can be represented by wave function with many variables

• Periodical: Advanced Materials Research (Volume 896)
• Pages: 502-505
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.896.502
• Online since: February 2014
• Authors: Arief Hermanto*
• Keywords: Crystalline Lattice Vibration, Phonon, Second Quantization, Wave Functional

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