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ForgeJB
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http://www.counterbalance.org/cq-turok/etern-body.html
https://ned.ipac.caltech.edu/level5/Kolb/Kolb3_1.html)
http://www.astronomy.ohio-state.edu/~dhw/A873/notes7.pdf)
So what causes the inflaton field to fluctuate to a higher value in some regions and to a lower value in some others?
Fluctuations from what?
However, the field φ, like every other field, is subject to quantum mechanical fluctuations. As it rolls down the hill, in some regions φ fluctuates downwards and in others it fluctuates upwards.
https://ned.ipac.caltech.edu/level5/Kolb/Kolb3_1.html)
During inflation there are quantum fluctuations in the inflaton field.
http://www.astronomy.ohio-state.edu/~dhw/A873/notes7.pdf)
According to QFT, if you make repeated measurements of some property of the field then you will in general measure a fluctuating value. But the fluctuation is in the measurement of the field not in the field itself. Quantum fields do not fluctuate.The field φ experiences quantum fluctuations, as the uncertainty principle tells us it must.
So what causes the inflaton field to fluctuate to a higher value in some regions and to a lower value in some others?
Fluctuations from what?
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