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Search options not deleted user 349875

The study of the large-scale structure, history, and future of the universe. Cosmology is about asking and answering questions about the "big picture" - the extent, origin, and fate of everything we know.

1 vote
0 answers
48 views

How to show that our model is close to Einstein's gravity after inflation

We have a modified $f \left( R \right)$ gravity model. How can we show that the proposed model is close to Einstein's gravity after inflation and does not contradict observation data?
Saber's user avatar
  • 75
1 vote
1 answer
68 views

Event and cosmological horizons in black hole structures

Sometimes, we face two horizons in the dS black hole. How do we determine the difference between the event horizon and the cosmological event horizon? How is it calculated, and what is the difference? …
Saber's user avatar
  • 75