From Curves To Strings - Deepstash
How To Have a Good Night

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From Curves To Strings

The ‘curves in space’ theory of gravity is falling out of favour due to the fact that Einstein’s equations seem to work on our solar system but begin to break when we apply the same near a black hole or back in time, during the initial big bang.

String Theory, which conceptualizes that gravity and all other forces are products of tiny vibrating strings, is the prime candidate to replace Einstein’s work.

103

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MORE IDEAS ON THIS

Quantum Gravity And The Degrees Of Freedom

Any proposed theory of quantum gravity would need to take care of the principles of locality, which state that any variable can change independently while measuring the properties of any point in space-time. These variables are called the degrees of freedom.

A...

103

306 reads

Gravity And The Forces Of Nature

Gravity And The Forces Of Nature

According to physicists, quantum particles are responsible for three forces of nature:

  • Strong nuclear force.
  • Weak nuclear force.
  • Electromagnetic force.

The fourth force of nature, gravity, is till now assumed to not originate from quantum par...

115

585 reads

Gravity Leads To Black Holes

The infinite weirdness of black holes makes it difficult for a physicist to combine gravity with quantum mechanics (QM).

The fact that gravity works on everything makes it difficult to construct an apparatus to measure the QM properties of gravity. This is because the measuring apparatus c...

103

316 reads

General Relativity Theory

Einstein's General Theory Of Relativity provides a rock-solid description of gravity, black holes and even the Big Bang, but fails to explain the very ‘singularities’ that signal towards infinity.

The extraordinary force of gravity can be researched with new-age engineering experiments bu...

106

406 reads

Gravity And Unknown Factors

The reason Einstein’s theory of general relativity works well in lower energy calculations and standard quantum techniques but not in higher energies and scales (like a black hole), could be because certain key features or ingredients of gravity are yet unknown to us, and are therefore missing fr...

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291 reads

Gravity Is Incalculable

  • While performing quantum calculations, certain infinite terms appear, making these theories ‘non-renormalizable’.
  • Theories that are describing the forces of nature other than gravity, can easily be renormalized(put to scale) and that makes gravity an a...

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231 reads

The Holographic Principle

"The number of degrees of freedom in a spatial region is proportional to its surface area instead of its volume” - Daniel Harlow, Quantum gravity theorist at MIT.

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335 reads

Something Out Of Nothing

Quantum gravity experiments and observations show some interesting phenomena in particles and even space-time. It is the cause of the creation of entire universes, not just particles.

The more the universe expands, the more vacuum is created, due to the expansion of space-time, leading to ...

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249 reads

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