Could Bell experiments reveal a link between photon spin and gravity waves?

In summary, the photon's spin could be determined by a gravity wave that travels through space. However, this model is not based on evidence and is impossible.
  • #1
kurious
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When a photon's spin is measured, the photon must exert a force on the device that measures its spin.Since a force is associated with an acceleration and an acceleration with gravity,could the photon have created a gravity wave that travels through space and determines the spin of a second photon coupled to it?
 
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  • #2
kurious said:
When a photon's spin is measured, the photon must exert a force on the device that measures its spin.Since a force is associated with an acceleration and an acceleration with gravity,could the photon have created a gravity wave that travels through space and determines the spin of a second photon coupled to it?
It would appear that this model would show a link between gravitons and entanglement. If gravitons are at all what we think they are, they travel at lightspeed, so this link should eb impossible.
 
  • #3
LURCH:

It would appear that this model would show a link between gravitons and entanglement. If gravitons are at all what we think they are, they travel at lightspeed, so this link should eb impossible.

Kurious:

Then let the gravitational force carrier move faster than light.If it did then its wavelength would be greater than LIGO experimentalists expect and that could be why they haven't detected any gravitational waves so far.
 
  • #4
i don't think the speed of gravity waves would matter to a detector would it? there are a lot better reasons why we haven't detected gravity waves besides...
 
  • #5
The amplitude of a faster wave would be smaller- it would matter to LIGO detectors.
 
  • #6
I would think that gravity waves travel at c or maybe a little less because if gravity waves travel faster than c then it would be possible to send information faster than the speed of light. Just have a device that reads the gravitational pull excerted by another object far away. Move the object accordingly and the detector can pick up its movement by changes in the gravitational pull exerted on it. But who knows.
 
  • #7
The idea of information traveling faster than light is why I started thinking about gravity doing so.Gravity is still a poorly understood phenomenon and
every particle in the universe is associated with it and so could communicate quickly with it.
 
  • #8
http://www.aaas.org/meetings/AM_images/2004_Headshots/Head_Kip_Thorne.jpg has given us a lot to consider about gravitational waves. I was looking for a panel in particular that I will have to place another time

http://astrosun2.astro.cornell.edu/academics/courses//astro201/images/bin_puls.gif

In 1993, the Nobel Prize in Physics was awarded to Russell Hulse and Joseph Taylor of Princeton University for their 1974 discovery of a pulsar, designated PSR1913+16, in a binary system, in orbit with another star around a common center of mass.

Using the Arecibo 305m antenna, Hulse and Taylor detected pulsed radio emission and thus identified the source as a pulsar, a rapidly rotating, highly magnetized neutron star. The neutron star rotates on its axis 17 times per second; thus the pulse period is 59 milliseconds.

After timing the radio pulses for some time, Hulse and Taylor noticed that there was a systematic variation in the arrival time of the pulses. Sometimes, the pulses were received a little sooner than expected; sometimes, later than expected. These variations changed in a smooth and repetitive manner, with a period of 7.75 hours. They realized that such behavior is predicted if the pulsar were in a binary orbit with another star.

http://astrosun2.astro.cornell.edu/academics/courses//astro201/psr1913.htm

http://wc0.worldcrossing.com/WebX?14@206.JZcBcahOgDl.0@.1ddea0b3/23 Scroll down immediately when page is opened
 
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  • #9
Bell has nothing to do with gravity. You cannot derive any kind of link with gravity from Bell, period. Regardless of the nature of the hypothetical root of the 2 photons' spin, it cannot be local realistic. That is all Bell says.

QM separately says that photon spin is not tied to gravity. So you would have to come up with some pretty fancy footwork to create a theory that couples photon spin to gravity given the experimental evidence in support of QM.
 
  • #10
DR CHINESE:

Bell has nothing to do with gravity. You cannot derive any kind of link with gravity from Bell, period

Kurious:
Every particle in the universe exists in a gravitational field.
The Bell experiments take place in a gravitational field wherever they can be possibly done.There has to be a link!
And who said that the photon's spin would be affected by the spin of the graviton - the photon's spin might be affected by the energy of the graviton.
Also, given that LIGO has not detected gravity waves yet, there is hope that
it may have failed to do so because the waves have a speed greater than light and a smaller amplitude than expected.
 
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What is Bell's inequality?

Bell's inequality is a mathematical expression that is used to test the validity of local realism, which is the idea that physical properties of objects exist independently of any observations or measurements.

How is Bell's inequality related to gravity?

Bell's inequality is often used in quantum gravity research to investigate the possibility of hidden variables or non-locality in the quantum world. It is also used to study the relationship between quantum mechanics and general relativity.

What is the connection between Bell's inequality and entanglement?

Bell's inequality is closely related to the concept of entanglement, which is when two particles become correlated and share a quantum state. This correlation has been shown to violate Bell's inequality, providing evidence for non-locality and challenging the principle of local realism.

What are the implications of Bell's inequality for our understanding of reality?

Bell's inequality suggests that there may be fundamental aspects of reality that cannot be explained by local realism. This challenges our traditional understanding of cause and effect and the idea that physical properties exist independently of observation.

Is Bell's inequality experimentally testable?

Yes, Bell's inequality has been tested in numerous experiments, including the famous Bell test experiments. These experiments have consistently shown violations of Bell's inequality, providing support for the idea that non-locality is a fundamental aspect of the quantum world.

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