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2 days ago · After Newton and Einstein, the theory of gravity has not yet reached its final state and must now face a new challenge: the quantum world. Modern physics relies on two central theories: one which is important on large scales and describes gravity and the resulting dynamics of massive objects, called General Relativity (GR), and another which is ...
23 hours ago · We outline the essential features of the adiabatic theory and demonstrate how test particle motion in general relativity may be investigated using it. The theory relies on adiabatic invariants and vector elements of the orbits. We derive a specific representation of the Kerr metric in harmonic coordinates, which enables us to obtain a general formula for the perihelion shift of test particles ...
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3 days ago · Describing the dynamics of an object falling headlong down a black hole’s maw is a task for Albert Einstein’s general theory of relativity. Einstein used this theory...
3 days ago · There is no quantum theory of time measurement; relativity is both fundamental to time and difficult to include in quantum mechanics. While position and momentum are associated with a single particle, time is a system property: it has no operator needed for the Robertson–Schrödinger relation.
23 hours ago · Many physicists maintain that the passage of time is purely a feature of mind, beyond physics itself, while others argue that it points to some new physical paradigm, perhaps associated with the marriage of relativity theory and quantum theory. Certainly, the status of time in any final theory of physics remains unclear.
1 day ago · Albert Einstein had a massive influence on contemporary physics. His theory of relativity shifted contemporary understanding of space completely. Along with his equation E = mc 2, it also foreshadowed the creation of the atomic bomb.
3 days ago · Both Einstein's theory of special and general relativity state that light should pass freely through a vacuum without being altered, a principle known as Lorentz invariance. Yet, in theory, large nonlinear self-interaction of light due to quantum fluctuations should lead to this principle being measurably violated if the interactions are strong ...
