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4 votes
3 answers
717 views

Will a closed universe with dark energy still collapse into a big crunch or will it expand forever?

3 votes
2 answers
259 views

Is energy conserved in QFT in curved spacetime?

3 votes
1 answer
253 views

Are these arguments to inflationary predictions in this Fact-Checking page legitimate? [closed]

3 votes
2 answers
232 views

What causes fluctuations in the inflaton field value?

2 votes
4 answers
589 views

What would happen to de Sitter universe if the cosmological constant disappears?

2 votes
1 answer
156 views

The inflaton field exists in a superposition of energies. How does that affect the rate of cosmological expansion?

2 votes
1 answer
487 views

Heat death in eternal inflation

2 votes
1 answer
173 views

Is there any way to tell if the Big Bang happened everywhere or just in some regions of the entire universe?

2 votes
3 answers
823 views

Do quantum fluctuations cause variations in energy density across space?

2 votes
2 answers
169 views

Is cosmological constant some kind of field that permeates all of space?

1 vote
1 answer
258 views

Why do we think that the energy density of false vacuum/scalar field doesn’t dilute with the expansion?

1 vote
1 answer
107 views

Does the potential $V(φ)$ of a scalar field decrease with the expansion of space?

1 vote
2 answers
416 views

Do quantum fluctuations in the inflaton field lead to fluctuations in the potential energy density?

1 vote
2 answers
110 views

After inflation ended, did the expansion slow down to non-inflationary expansion because of gravity?

1 vote
1 answer
414 views

Temperature due to the cosmological horizon during inflation

1 vote
3 answers
204 views

Did the rapid inflationary expansion slow down a lot because the inflaton field had decayed, or because of gravity from matter/radiation?

0 votes
0 answers
250 views

How fine-tuned is the expansion rate and the density of the universe?

0 votes
0 answers
60 views

Are there tests of the existence of false vacuum? [duplicate]

0 votes
1 answer
245 views

How can the energy in the inflaton field which has negative pressure decay into normal matter and radiation which has positive pressure?

0 votes
2 answers
107 views

Is the space between galaxies that are close to each other contracting? [closed]

0 votes
1 answer
353 views

Does reheating occur when inflation ends or when the field reaches minimum?

0 votes
0 answers
123 views

Fluctuations in the value of a quantum field at a point? [duplicate]

-1 votes
1 answer
94 views

What happens to pressure exerted by photons in pair production?

-1 votes
1 answer
159 views

Would eternal inflation be really eternal since quantum fluctuations are usually very rare and very small?