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Gravitational wave generation in power-law inflationary models

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Abstract

We investigate the generation of gravitational waves in power-law inflationary models. The energy spectrum of the gravitational waves is calculated using the method of continuous Bogoliubov coefficients. We show that, by looking at the interval of frequencies between 10−5 and 105 Hz and also at the GHz range, important information can be obtained, both about the inflationary period itself and about the thermalization regime between the end of inflation and the beginning of the radiation-dominated era. We thus deem the development of gravitational wave detectors, covering the MHz/GHz range of frequencies, to be an important task for the future.

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Authors and Affiliations

  1. Centro Multidisciplinar de Astrofísica (CENTRA) and Departamento de Física, FCT, Universidade do Algarve, Campus de Gambelas, 8005-139, Faro, Portugal

    Paulo M. Sá

  2. Centro Multidisciplinar de Astrofísica (CENTRA) and Departamento de Física, Instituto Superior Técnico, UTL, Av. Rovisco Pais, 1049-001, Lisboa, Portugal

    Alfredo B. Henriques

Authors
  1. Paulo M. Sá
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  2. Alfredo B. Henriques
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Correspondence to Paulo M. Sá.

Additional information

This work was supported in part by the Fundaç ão para a Ciência e a Tecnologia, Portugal.

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Sá, P.M., Henriques, A.B. Gravitational wave generation in power-law inflationary models. Gen Relativ Gravit 41, 2345–2359 (2009). https://doi.org/10.1007/s10714-009-0761-6

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