Sentences with phrase «eternal inflation»

If this discovery would suggest anything regarding the origin of the universe, it is that the theory of eternal inflation is likely to be correct.

This unsettling idea arises from a popular theory called eternal inflation.

The alternative, they say, is that applying cut - offs is simply not the right way to calculate probabilities in eternal inflation.

«In current approaches to understanding eternal inflation, the cut - off and only the cut - off defines what is possible, likely, unlikely and impossible,» he says.

They came up with a new idea of eternal inflation that relies on a boundary at the beginning of time.

That paper — titled «A smooth exit from eternal inflation?»

«The usual theory of eternal inflation predicts that globally our universe is like an infinite fractal, with a mosaic of different pocket universes, separated by an inflating ocean,» Hawking said in an interview last fall, according to the University of Cambridge.

Eternal inflation suggested that it was not enough to think about time in our universe only; he realized he needed to consider it in a much bigger, multiverse context.

«We wondered if eternal inflation could work in both directions,» Carroll says.

A full theory of eternal inflation came together in Carroll's mind in 2004, while he was attending a five - month workshop on cosmology at the University of California at Santa Barbara's famous Kavli Institute of Theoretical Physics with his student Jennifer Chen.

«Others would say, «Ah, this is exactly what we need for eternal inflation, for the multiverse, for anthropic thinking, and so forth.

Black - hole - generated universes differ from the ones associated with eternal inflation in an important regard.

Those laws govern the something - from - nothing moment of creation that gives rise to our universe, and they also govern eternal inflation, which takes over in the first nanosecond of time.

«The point is that the way people treat eternal inflation, time can end, no matter whether we understand precisely how time would actually do that,» says team member Raphael Bousso of the University of California, Berkeley.

Instead, Guth suggests the paradox could just be an artefact of the measurement technique, since the exponential nature of eternal inflation means that newer universes will always be more common than older ones.

And if this idea of eternal inflation producing an infinite number of universes is right, those infinite number of universes could each have a different one of these 10500 vacua, so all of them would exist.

«If you buy eternal inflation, it predicts a multiverse,» Peiris said.

Weinberg isn't sure it would even be possible to tell the difference between these different possibilities, especially because many models of eternal inflation exist.

All of these universes are believed to come into existence through a process called eternal inflation, in which at least one universe continually expands at an incredible rate, while others form and grow within it like bubbles.

For the moment, Guth says he is comfortable with not fully understanding how probabilities work in eternal inflation.

«When we trace the evolution of our universe backwards in time, at some point we arrive at the threshold of eternal inflation, where our familiar notion of time ceases to have any meaning,» Hertog told Cambridge.

That concept relies on something known as «eternal inflation.»

Hertog told Cambridge that the physics that would account for infinite parallel universes break down when applied to the theory of eternal inflation.

In the late 1980s Guth and other physicists, most notably Andrei Linde, now at Stanford, saw that inflation might happen over and over in a process of «eternal inflation.»

The trick needed to make eternal inflation work was to find a generic starting point: an easy - to - achieve condition that would occur infinitely many times and allow eternal inflation to flow in both directions.»

Physicists call this multiplication of reality «eternal inflation.»

Should this minute realm contain just a smattering of repulsive - gravity material, that's enough to ensure it will ignite the unstoppable process of eternal inflation, leading to the universe we inhabit today.

«If you don't like the cut - off, then you have no way of making predictions and deciding what's probable in eternal inflation.»

«This is potentially an added experimental success for string theory and eternal inflation,» says Daniel Harlow, a physicist at Princeton University.

Rachel Courtland reports that a paradox exists in the theory of eternal inflation, which gives rise to the multiverse, because...

One model of inflation, called eternal inflation, suggests that new universes are continually popping into existence and expanding.

An interesting feature of inflation is that almost all versions of it lead to eternal inflation: once inflation starts, it goes on forever, producing a «multiverse» of «pocket universes,» one of which would be our universe.

A multiverse model tied to eternal inflation could have the same kind of explanatory power.

This feature has led cosmologists to contemplate a scenario called eternal inflation.

Stephen Hawking's final research paper solves a key problem in the multiverse theory, offering a new concept of an eternal inflation that's scaled