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9. Mai 2018 · The descent is irreversible. That is a problem because all known laws of fundamental physics, including those of quantum mechanics as generally understood, are reversible. At least in principle...
- George Musser
- 2018
24. Apr. 2021 · Notice that for time to exist in such a structure there is no need for the irreversible processes we encounter in thermodynamics. That is, there isn't a global direction of time, only a local one. To deny that spacetime exists, independently of human beings, would be to deny that
29. Juli 2016 · The answer is that anything that happens in spacetime, follows the laws of physics, affects the spacetime and viceversa, and you have to solve the nonlinear general relativity (GR) equations (or the unknown quantum gravity equations).
- The World in A String Duet
- Space to Think
- Atoms of Spacetime
- The Future of Space at The Edge of Time
Today the most popular candidate theory of quantum gravity among physicists is string theory. According to this idea, its eponymous strings are the fundamental constituents of matter and energy, giving rise to the myriad fundamental subatomic particles seen at particle accelerators around the world. They are even responsible for gravity—a hypotheti...
If the string theorists are correct, then space is built from quantum entanglement, and time might be as well. But what would that really mean? How can space be “made of” entanglement between objects unless those objects are themselves somewhere? How can those objects become entangled unless they experience time and change? And what kind of existen...
String theory is not the only idea that suggests spacetime is emergent. String theory has “failed to live up to [its] promise as a way to unite gravity and quantum mechanics,” says Abhay Ashtekar, a physicist at Pennsylvania State University. “The power of string theory now is in providing an extremely rich set of tools, which has been used widely ...
Modern physics is a victim of its own success. Because quantum physics and general relativity are both so phenomenally accurate, quantum gravity is needed only to describe extreme situations, when enormous masses are stuffed into unfathomably tiny spaces. Those conditions exist in only a few places in nature, such as the center of a black hole—and ...
2. Dez. 2015 · Not only does matter distort Spacetime, but matter IS made of Spacetime. Move a bit of matter and it is connected to all other bits of matter. And to point out Spacetime next to the earth cannot be seperated from the matter of the Earth, there can never be a separation between them for they are the same thing.
For constant velocity motion in flat spacetime (we will discuss what that means later), the spacetime interval is \[c^2\Delta \tau^2=c^2\Delta t^2-\Delta x^2-\Delta y^2-\Delta z^2.\label{eq:SRInterval},\] where \(c=3\times 10^8\) m/s is the speed of light. The coordinates \(t\), \(x\), \(y\), and \(z\) mark an event that depends on the ...
24. Okt. 2014 · Some researchers, notably the late Nobel laureate chemist Ilya Prigogine, have contended that the subtle physics of irreversible processes make the flow of time an objective aspect of the world...
