On the BGV Theorem and Eternal Cyclic Cosmology
The beginning of the universe doesn’t need to be singular, so doubts about a singularity don’t need to translate into doubts about a beginning. Source
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The beginning of the universe doesn’t need to be singular, so doubts about a singularity don’t need to translate into doubts about a beginning. Source
Oscillating universes have been discussed in philosophy from time immemorial and in mathematical cosmology for over one hundred years. Source
The equations of general relativity give up at the singularity. Decades before Stephen Hawking dared to guess what came before, John Wheeler and Bryce DeWitt built the strange math...
Run Hawking's machinery and out pops something startling: the most likely universe looks an awful lot like ours, complete with inflation, a low-entropy beginning, and an arrow of t...
The biggest open problem in the foundations of physics is that Einstein’s theory of gravity, General Relativity, does not cooperate with quantum mechanics. Physicists have tried to...
No quantum gravity. The wrong peak in the wave function. Boltzmann Babies. Roger Penrose pointing out that the arrow of time was smuggled in through the back door. The no-boundary...
Hawking faced a question with no answer hiding behind it. The best boundary condition for the universe, he decided, was that there was no boundary at all. To make that statement in...
Feed the right numbers into the right formula and the universe should confess its geometry. That is the logic behind a class of tests cosmologists have been running for two decades...
Основная задача любой науки — это ответить на вопросы, которые в конечном итоге пытаются пояснить, как работает окружающий нас мир. Одним из самых сложных и порой загадочных вопрос...
A new study links the universe’s expansion to quantum topology, suggesting that hidden mathematical structures may stabilize the cosmological constant in ways previously unrecogniz...
The cosmological constant has been a problem in physics since Einstein, but new research may show why it takes the value that it does despite quantum fluctuations that should make...
The early universe is absolutely so far outside our understanding of how the world works it's hard to describe in words. Back then, the cosmos wasn't filled with stars and galaxies...
The early universe is absolutely so far outside our understanding of how the world works it's hard to describe in words. Back then, the cosmos wasn’t filled with stars and galaxies...
The universe is not large in spite of us — it is large, in part, because of what it takes to produce us. Source
If a certain tiny bubble suddenly appeared somewhere in the cosmos, physicists say, it could expand and erase everything in its path. Known as “false vacuum decay”, the scenario ha...
Mathematicians are challenging the idea that dark energy is responsible for the accelerating expansion of the universe. In a new paper published in Proceedings of the Royal Society...
A new quantum gravity theory suggests the Big Bang may have unfolded naturally—and could soon be testable. Scientists at the University of Waterloo have introduced a new approach t...
Inside some very special black holes, there may be a boundary called a Cauchy horizon. Columnist Leah Crane explores the place beyond which physics breaks and anything is possible
Источник: Компьютерра - Журнал о науке и технологиях Американские математики представили математическое доказательство того, что текущая модель расширяющейся Вселенной, основанная...
Physicists have been trying to reconcile the differences between Einstein’s theory of spacetime and our observations of quantum mechanics for almost a century. One way that they’ve...
Physicists have thought for decades that microscopic black holes can theoretically emerge not from exploding stars but from delicate "critical states" in which space and time organ...
By tracing the origins of an unusual, short-lived particle, researchers have gathered some of the strongest evidence yet that mass can emerge from fluctuations in the vacuum
A new synthesis of astronomical measurements confirms a persistent mismatch that could point to physics beyond current models.
An international team led by Monash University has uncovered evidence of a rare form of exploding star, helping to shed light on one of the most cataclysmic events in the universe....
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