Physics in the 5th Dimension - Lisa Randall Interview with Koichi Wakata on Japanese TV (~2006)
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 Published On Apr 28, 2022

I was given a copy of this interview from a TV producer in Japan which featured the American physicist Professor Lisa Randall after she wrote her book "Warped Passages" on Physics in the 5th dimension. In this short interview Professor Randall is interviewed by the famous Japanese JAXA astronaut Koichi Wakata, who was the commander of the ISS and is a veteran of the NASA Space Shuttle missions. He is one of the most decorated astronauts in the world at present and is still in active duty.

Professor Lisa Randall, professor of physics at Harvard University, explains some of her theoretical models on extra-dimensional, warped spacetime. Lisa Randall is a leading expert on particle physics and cosmology. She works on several of the competing models of string theory in the quest to explain the fabric of the universe.

Stephen Hawking had also made similar claims, while also stating that cosmological studies done on data from the new Planck Satellite mapping the Cosmic Microwave background may also confirm predictions of M-Theory with extra-dimensions being one possible consequence.

In summary, Gravity in our dimension is a very weak interaction and has 1/Planck scaled interactions. However, Lisa Randall, along with Raman Sundrum and others, have shown that in warped dimensions the gravitational interaction is strengthened by 16 orders of magnitude stronger, as the Kaluza-Klein partner to the graviton scales as 1/TeV scaled interactions.

Space-Time warping in higher dimensions lowers mass scales for observed particles, pure Standard Model Gravitons would be of huge mass scales, impossible to reach using human technology.

However, near the brane, higher dimensional partners of the graviton would carry its momentum in a 5D brane and would have a rescaled, much lower mass. This could make it detectable with current technology.

Gravitons could therefore be generated by the Large Hadron Collider (LHC) at certain, as of yet, unknown energy modes. Several modes may exist and oscillate at higher dimension modes which may lie outside the LHC energies at some point, as it passes the 5D brane outside the bulk space.

Hence, if the LHC does have sufficient energy to reach one of the KK-mode graviton modes then it could be possible to detect Quantum Gravity at the LHC.

Higher modes may also allow artificial black holes to be condensed out of higher fluxes of KK-mode gravitons.
These black holes may only consist of a few, fermionic states of supersymmetric gravitons at the lowest energy state so it would instantly be destroyed by the Hawking Process. This would be a huge leap forward into studying M-Theory.

Lisa Randall's work is very high powered but she is a great communicator of science and is great in interviews at explaining her work so that everyone can share in the exploration.

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