The Gravity Particle Should Exist. So Where Is It?
Related videos
Earth’s Core Should Be Impossible. A New State of Matter Explains It.
PBS Space Time
346.9k views
This Particle Solved Everything. We Just Found Out It Isn't Real
PBS Space Time
66.1k views
The Universe Itself Might Be Hiding the Gravity Particle From Us
PBS Space Time
217.9k views
Is There Evidence For a Vast Multiverse?
PBS Space Time
376.5k views
Why The Multiverse Could Be Real
PBS Space Time
518.6k views
Is There A Simple Solution To The Fermi Paradox?
PBS Space Time
1.4m views
The Crisis in Physics: Why the Higgs Boson Should NOT Exist!
PBS Space Time
1.3m views
What If Gravity Isn’t Quantum? New Experiments Explore
PBS Space Time
562.1k views
Is Gravity RANDOM Not Quantum?
PBS Space Time
744.4k views
Can a Particle Be Neither Matter Nor Force?
PBS Space Time
795.3k views
The Graviton: Quantum Particle of Gravity and Unification Hurdles
Discover why finding the elusive graviton—the quantum particle of gravity—is essential to unifying physics, and learn why the standard path to quantization fails spectacularly under mathematical scrutiny.
Short Summary
- The search for the graviton aims to reconcile Quantum Mechanics (QM) and General Relativity (GR) to create a master theory.
- Standard perturbative quantization works well for weak gravity but fails completely in strong gravity regimes due to non-renormalizable infinities.
- If the graviton exists, it must possess specific properties (massless, spin 2 boson) that guide theories like String Theory.
- Future verification relies on detecting subtle quantum gravitational effects, such as mediating quantum entanglement, rather than immediate direct observation.
This episode explores the 100-year quest to fit gravity into the quantum framework. We detail the successes of quantizing other forces using Quantum Field Theory and demonstrate where this methodology breaks down when applied to spacetime's fabric, potentially redefining our search for a Theory of Everything.
Unlock all features
FREE: Get instant access to 10 AI summaries, chats, or transcripts per day.
Unlock all features
FREE: Get instant access to 10 AI summaries, chats, or transcripts per day.
Unlock all features
FREE: Get instant access to 10 AI summaries, chats, or transcripts per day.
Unlock all features
FREE: Get instant access to 10 AI summaries, chats, or transcripts per day.
Unlock all features
FREE: Get instant access to 10 AI summaries, chats, or transcripts per day.
Related videos
Earth’s Core Should Be Impossible. A New State of Matter Explains It.
PBS Space Time
346.9k views
This Particle Solved Everything. We Just Found Out It Isn't Real
PBS Space Time
66.1k views
The Universe Itself Might Be Hiding the Gravity Particle From Us
PBS Space Time
217.9k views
Is There Evidence For a Vast Multiverse?
PBS Space Time
376.5k views
Why The Multiverse Could Be Real
PBS Space Time
518.6k views
Is There A Simple Solution To The Fermi Paradox?
PBS Space Time
1.4m views
The Crisis in Physics: Why the Higgs Boson Should NOT Exist!
PBS Space Time
1.3m views
What If Gravity Isn’t Quantum? New Experiments Explore
PBS Space Time
562.1k views
Is Gravity RANDOM Not Quantum?
PBS Space Time
744.4k views
Can a Particle Be Neither Matter Nor Force?
PBS Space Time
795.3k views
Top Comments (10)
Dear algorithm, please prioritize fact based content like PBS Spacetime over clickbaity garbage & trendy content lacking any substance
"I swear dude, just one more particle and we will understand everything, dude!"
"Physics is very close to understanding everything in the universe" - Famous last words XD
You need to make a T-shirt with the milk carton photo of a graviton and the caption “Have you seen this particle?”
0:10 You sneaky devil, you thought you could hide it in plain sight. You're holding it!
I took the survey and begged PBS to give you, Eons, and honestly every other PBS YouTube channel more money. This channel has fundamentally changed how I see much of the world/universe. It has stripped off more than a couple silly notions, and it has widened my appreciation for the effects of every field of science in our lives. I sincerely hope these channels stay around as long as possible, y'all do the world an incredible service.
Every episodes adds gravity to the situation of the universe
11:57 Iwould so try to collect trading cards of particles like that 😂 that’s such a clever graphic, well done!
That familiar sinking feeling of getting halfway through a PBS Spacetime video and thinking, "I've got it all so far, oh wait, what's this?" Happens every time...
That thing about quantum mechanics being fundamentally discrete and the general relativity being fundamentally continuous... its interesting. This was part of what the Eleatics were doing with the 'Zeno paradoxes'. The point of those paradoxes was to call out that, if you assume that reality is discrete, you are led to paradox. If you assume that reality is continuous, you are led to paradox. The argument is that, since we can only conceive of reality being *either* continuous *or* discrete, the underlying nature of reality must be something completely unlike anything that we can conceive. Pretty advanced thinking for, what, 500BC or even earlier.
Unlock the Data Inside
Turn Videos into Knowledge
- Get FREE 10/day: transcripts, summaries, chats
- Chat with videos, export text & PDF
- $1 free API credit for RAG, chatbots & research
Free forever plan • All features unlocked
Top Comments (10)
Dear algorithm, please prioritize fact based content like PBS Spacetime over clickbaity garbage & trendy content lacking any substance
"I swear dude, just one more particle and we will understand everything, dude!"
"Physics is very close to understanding everything in the universe" - Famous last words XD
You need to make a T-shirt with the milk carton photo of a graviton and the caption “Have you seen this particle?”
0:10 You sneaky devil, you thought you could hide it in plain sight. You're holding it!
I took the survey and begged PBS to give you, Eons, and honestly every other PBS YouTube channel more money. This channel has fundamentally changed how I see much of the world/universe. It has stripped off more than a couple silly notions, and it has widened my appreciation for the effects of every field of science in our lives. I sincerely hope these channels stay around as long as possible, y'all do the world an incredible service.
Every episodes adds gravity to the situation of the universe
11:57 Iwould so try to collect trading cards of particles like that 😂 that’s such a clever graphic, well done!
That familiar sinking feeling of getting halfway through a PBS Spacetime video and thinking, "I've got it all so far, oh wait, what's this?" Happens every time...
That thing about quantum mechanics being fundamentally discrete and the general relativity being fundamentally continuous... its interesting. This was part of what the Eleatics were doing with the 'Zeno paradoxes'. The point of those paradoxes was to call out that, if you assume that reality is discrete, you are led to paradox. If you assume that reality is continuous, you are led to paradox. The argument is that, since we can only conceive of reality being *either* continuous *or* discrete, the underlying nature of reality must be something completely unlike anything that we can conceive. Pretty advanced thinking for, what, 500BC or even earlier.