Onsager–Casimir principle and reciprocity relations for bianisotropic media

✍ Scribed by E. O. Kamenetskii

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 122 KB
• Volume: 19
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/(sici)1098-2760(19981220)19:6<412::aid-mop10>3.0.co;2-z

✦ Synopsis

To use the general reciprocity theorem for bianisotropic media, the physical basis should be established. There is the Onsager᎐Casimir principle that shows how the time-re¨ersal in¨ariance of microscopic equations of motion gi¨es certain relations for macroscopic susceptibilities of a causal linear bianisotropic medium. In this paper, we show that in a general case of a bianisotropic medium, the Onsager᎐Casimir principle is not the same as the Lorentz reciprocity. We discuss the fact that one cannot use the Onsager᎐Casimir principle to ''ensure the physicality'' of the known microwa¨e chiral and ⍀-media. At the same time, we show that the Onsager᎐Casimir principle is applicable to new particulate bianisotropic compositesᎏthe MCBMs. The MCBMs gi¨e an example of nonreciprocal bianisotropic media with dynamical constituti¨e symmetry.