Topic: pre Big Bang Quantum Bounce?

[Nemesis]

Link to full article

Reporting in the current issue of Physical Review Letters, the team said their calculations reveal that prior to the Big Bang, there was a contracting universe with space-time geometry otherwise similar to the current expanding universe.

As gravitational forces pulled this previous universe inward, it reached a point at which the quantum properties of space-time cause gravity to become repulsive, rather than attractive.

"Using quantum modifications of Einstein's cosmological equations, we have shown that in place of a classical Big Bang there is in fact a quantum bounce," Ashtekar said. "We were so surprised by the finding that there is another classical, pre-Big Bang universe that we repeated the simulations with different parameter values over several months, but we found that the Big Bounce scenario is robust."

[AlchemistiD]

I live for this stuff.  Thanks Nemesis!

[E_Look]

Link to full article

Reporting in the current issue of Physical Review Letters, the team said their calculations reveal that prior to the Big Bang, there was a contracting universe with space-time geometry otherwise similar to the current expanding universe.

As gravitational forces pulled this previous universe inward, it reached a point at which the quantum properties of space-time cause gravity to become repulsive, rather than attractive.

"Using quantum modifications of Einstein's cosmological equations, we have shown that in place of a classical Big Bang there is in fact a quantum bounce," Ashtekar said. "We were so surprised by the finding that there is another classical, pre-Big Bang universe that we repeated the simulations with different parameter values over several months, but we found that the Big Bounce scenario is robust."

Emphases mine.

[Commander Maxillius]

Link to full article

Reporting in the current issue of Physical Review Letters, the team said their calculations reveal that prior to the Big Bang, there was a contracting universe with space-time geometry otherwise similar to the current expanding universe.

As gravitational forces pulled this previous universe inward, it reached a point at which the quantum properties of space-time cause gravity to become repulsive, rather than attractive.

"Using quantum modifications of Einstein's cosmological equations, we have shown that in place of a classical Big Bang there is in fact a quantum bounce," Ashtekar said. "We were so surprised by the finding that there is another classical, pre-Big Bang universe that we repeated the simulations with different parameter values over several months, but we found that the Big Bounce scenario is robust."

Emphases mine.

Emphasis

[E_Look]

No, note that there is the green AND the italicization.      

[Commander Maxillius]

grammar bot

[Nemesis]

Yes it is their calculations.  Like many other such things.  Now they have to reveal what they did and allow others to scrutinize  and replicate it.  As is the normal way of serious science of this type.  If they are right then others can replicate it.