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Physicists created a tiny universe and watched time emerge without a clock
Physicists have created a tiny universe using atoms to watch time emerge without a traditional clock.
Quantum Gravity
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The rise of 'quantum gravity?' Einstein's theory seen in the quantum realm for 1st time
Scientists have observed Einstein's theory of gravity functioning within the quantum realm for the first time, testing the Equivalence Principle.
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Physicists test the weak equivalence principle in an orbiting space station
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New quantum gravity theory links entropy, dark energy, and life
A new quantum gravity theory, known as Gravity from Entropy, seeks to reconcile the laws of gravity with the second law of thermodynamics.
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Quantum gravity tests may mistake ordinary spacetime for superposition
New research from Kyushu University suggests that quantum gravity tests may be misinterpreting ordinary spacetime as quantum superposition.
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The unsettling possibility raised by quantum gravity is that time may not be a basic ingredient of reality. It may be something that emerges only inside the universe, from entanglement, entropy, and relationships between physical systems
Recent theoretical developments in quantum gravity suggest that time may not be a fundamental component of reality.