Question about gravitational waves, E modes

AI Thread Summary
E modes refer to polarization patterns in the cosmic microwave background (CMB) rather than gravitational waves. They are indeed associated with the early universe, specifically during the recombination era, rather than directly from inflation. While gravitational waves can be produced during inflation, E modes are a distinct phenomenon linked to the density fluctuations in the early universe. Observations of E modes provide insights into the conditions of the universe shortly after the Big Bang. Understanding this distinction is crucial for studying cosmic evolution and the nature of gravitational waves.
Frank Einstein
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Hi everybody, I have been reading about gravitational waves, but I don't get how the E modes work; in one place I read that they were created during the inflation time, but in other I read that they come from the recombination.
Does it mean that they were produced almost when the Big Bang happened but I cam only see the ones from the recombination era?

Thanks for reading.
 
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Do you mean E modes in the cosmic microwave background? Those are not gravitational waves.
 

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