Experimental study of thermal noise caused by an inhomogeneously distributed loss

Autor:	Kimio Tsubono, Keita Kawabe, Kazuhiro Yamamoto, Masaki Ando, Shigemi Otsuka
Rok vydání:	2001
Předmět:	Mechanical system Physics Fluctuation-dissipation theorem Modal expansion Gravitational-wave observatory Quantum electrodynamics Quantum mechanics Spectrum (functional analysis) Thermal Mode (statistics) General Physics and Astronomy
Zdroj:	Physics Letters A. 280:289-296
ISSN:	0375-9601
Popis:	The thermal fluctuation of a mechanical system with an inhomogeneously distributed loss was measured to prove the invalidity of the normal-mode expansion method which is commonly used to calculate the thermal noise of mechanical oscillators. The measured spectrum is inconsistent with the modal expansion model, while they agree well with an evaluation obtained by applying the fluctuation-dissipation theorem to the measured mechanical response. These are the first experimental results which show that mode expansion is invalid.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8cc8d206416f8cfaab88fe6a9f908943 https://doi.org/10.1016/s0375-9601(01)00085-8 Zobrazit plný text záznamu Full Text from ScienceDirect