Is Gravity Quantum?

Is Gravity Quantum?

Postby Guest » Sat Oct 30, 2021 12:17 am

FYI: 'Is Gravity Quantum?
The ongoing search for the graviton—the proposed fundamental particle carrying gravitational force—is a crucial step in physicists’ long journey toward a theory of everything
.'

https://www.scientificamerican.com/article/is-gravity-quantum/.
Attachments
an artist’s rendition of gravitational waves generated by merging neutron stars.jpg
an artist’s rendition of gravitational waves generated by merging neutron stars.jpg (56.04 KiB) Viewed 335 times
Guest
 

Re: Is Gravity Quantum?

Postby Guest » Sat Oct 30, 2021 1:07 am

FYI: 'Quantum spacetime':

"In mathematical physics, the concept of quantum spacetime is a generalization of the usual concept of spacetime in which some variables that ordinarily commute are assumed not to commute and form a different Lie algebra. The choice of that algebra still varies from theory to theory. As a result of this change some variables that are usually continuous may become discrete. Often only such discrete variables are called "quantized"; usage varies...
"

Source Link: https://en.wikipedia.org/wiki/Quantum_spacetime.
Attachments
Orbits for the action of the Lorentz group on momentum space in the construction of the bicrossproduct model....png
Orbits for the action of the Lorentz group on momentum space in the construction of the bicrossproduct model....png (42.64 KiB) Viewed 333 times
Guest
 

Re: Is Gravity Quantum?

Postby Guest » Sat Oct 30, 2021 3:28 am

"It (mathematics) seems that it fails to describe quantum gravity." -- Prof. N. S. Duxbury.

"If quantum gravity exists, then we, mathematicians, will eventually model/understand it mathematically." -- Dave.

Go Blue! :D
Guest
 

Re: Is Gravity Quantum?

Postby Guest » Sat Oct 30, 2021 3:40 am

"We must know. We will know!" -- David Hilbert.
Guest
 

Re: Is Gravity Quantum?

Postby Guest » Tue Nov 02, 2021 12:27 pm

Attachments
Physics.png
Physics.png (19.49 KiB) Viewed 266 times
Guest
 

Re: Is Gravity Quantum?

Postby Guest » Wed Nov 03, 2021 12:36 am

Good Reference Book: 'GEOMETRY, TOPOLOGY, AND PHYSICS, 2ed.' by Prof. MIKIO NAKAHARA.
Attachments
book cover.jpg
book cover.jpg (19.56 KiB) Viewed 255 times
Guest
 

Re: Is Gravity Quantum?

Postby Guest » Wed Nov 03, 2021 10:55 pm

FYI: 'Quantum Gravity and Quantum Cosmology', by Prof. J. Hartle,

https://www.youtube.com/watch?v=xcJ7diTtURc.

Enjoy! :)
Guest
 

Re: Is Gravity Quantum?

Postby Guest » Wed Nov 03, 2021 11:42 pm

Guest wrote:"It (mathematics) seems that it fails to describe quantum gravity." -- Prof. N. S. Duxbury.

"If quantum gravity exists, then we, mathematicians, will eventually model/understand it mathematically." -- Dave.

Go Blue! :D


FYI: 'How To Test Quantum Gravity', by Prof. S. Hossenfelder,

"Einstein's theory of gravity, General Relativity, is awesome. But strictly speaking, it is wrong. We know that because it cannot handle the quantum behavior that particles have. To make quantum theory compatible with General Relativity, we need a theory of quantum gravity. We still don't have one. In this video, I explain what possibilities we have to experimentally test quantum gravity..."

Source Link: https://www.youtube.com/watch?v=HKtFU2Pxnm0;

Relevant Paper: 'A micromechanical proof-of-principle experiment for measuring the gravitational force of milligram masses', by Prof. J. Schmöle et al.,

https://iopscience.iop.org/article/10.1088/0264-9381/33/12/125031/pdf.

Enjoy! :)
Guest
 

Re: Is Gravity Quantum?

Postby Guest » Sat Nov 20, 2021 5:34 pm

Old Remark: Often Nature works to achieve its evolutionary goals in an optimal way. So, scientists must prove or show quantum gravity makes sense.

And the detection of quantum gravity is paramount.

General Questions: How do things work in Nature? Why?
Attachments
how tings work.jpg
how tings work.jpg (8.86 KiB) Viewed 93 times
Guest
 

Re: Is Gravity Quantum?

Postby Guest » Sat Nov 20, 2021 6:59 pm

A Relevant Idea: 'A brief history of minimal surfaces and the ants that love them',

https://phys.org/news/2021-11-history-minimal-surfaces-ants.html.
Attachments
The research describes a new algorithm that solves a classical geometry problem  -- find a surface of minimal area bordered by an arbitrarily prescribed boundary curve..jpg
The research describes a new algorithm that solves a classical geometry problem -- find a surface of minimal area bordered by an arbitrarily prescribed boundary curve..jpg (20.43 KiB) Viewed 90 times
Guest
 

Re: Is Gravity Quantum?

Postby Guest » Tue Nov 23, 2021 2:58 am

Guest wrote:Old Remark: Often Nature works to achieve its evolutionary goals in an optimal way. So, scientists must prove or show quantum gravity makes sense.

And the detection of quantum gravity is paramount.

General Questions: How do things work in Nature? Why?


The more mathematics one can absorb (understand) the better. And it is best to have a problem/project at hand when studying mathematical theory since theory and practice (application) are mutually beneficial. Amen!

The quest to discover the existence of quantum gravity and to model it mathematically is a grand impetus to study and apply some advanced mathematical knowledge/theories. Good Luck! :)
Guest
 

Re: Is Gravity Quantum?

Postby Guest » Thu Nov 25, 2021 2:25 pm

Keywords: Dynamic Manifolds, Networks, and Conservation Laws

Question: How are energy, physical field theories, entropy, quantum physics, and gravity related?
Attachments
the thinker and the question.jpg
Work = Mass + Energy (environment energy).
the thinker and the question.jpg (4.39 KiB) Viewed 34 times
Guest
 


Return to Physics



Who is online

Users browsing this forum: No registered users and 1 guest

cron