Do quantum fluctuations show that something can come from nothing?

by Neil Shenvi

Many modern Christian apologists such as William Lane Craig or John Lennox present the origin of the universe in the finite past as evidence that God exists. In response, many modern  atheists have sought to undermine such arguments by claiming that the existence of God is not required to account for the universe’s origin, usually by appealing to various scientific models of the universe’s origin. Because my expertise is in theoretical chemistry and quantum physics rather than in cosmology, I don’t have the background to evaluate the scientific plausibility of these cosmological models as alternatives to traditional Big Bang cosmology (nor -I expect- do most atheists!) However, I am qualified to address a claim that I frequently see advanced on the internet as a purportedly knock-down response to the claims of theists: the idea that ‘quantum fluctuations’ in some vague and unspecified sense explain the universe’s origin. In this essay, I’ll briefly explain what quantum fluctuations are and why they should not be invoked to explain the origin of the material universe out of nothing.

My argument is straightforward:

  • P1. If a ‘quantum fluctuation’ occurs, then it can be described by a wavefunction
  • P2. Wavefunctions describe ‘something’, not ‘nothing’
  • C. Therefore, if a ‘quantum fluctuation’ occurs, then it is ‘something’ not ‘nothing’

If this argument is correct, then atheists should not argue that ‘quantum fluctuations’ show that ‘something’ can come from ‘nothing’ because quantum fluctuations assume the existence of ‘something’ not ‘nothing’. Are there reasons to believe that this argument is sound? Read on…

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Do quantum fluctuations show that something can come from nothing?