Thermal noise computation in gravitational wave interferometers from first principles

Miroslav Tugolukov, Yuri Levin, Sergey P Vyatchanin

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We propose a universal method of computation of thermal noise in mirrors of gravitational wave interferometers based on first principles. We imagine a situation where a mirror is part of a Fabry-Perot cavity. The movement of the mirror's surface produces variation of the eigen frequency of the cavity, which is computed by evaluating the variation of the energy stored in cavity. We consider two particular examples: first, the thermal noise from a dielectric slab inside the Fabry-Perot cavity, and second, the polarization-dependent thermal noise in the folded cavity.

Original languageEnglish
Pages (from-to)2181-2185
Number of pages5
JournalPhysics Letters A
Issue number33
Publication statusPublished - 25 Aug 2018


  • Adiabatic invariant
  • Fabri-Perot cavity
  • Gravitational wave interferometer
  • Thermal fluctuations

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