Jonathan Oppenheim: Quantum Gravity, Feynman, Double Slit

Prof. Jonathan Oppenheim focuses on the stochastic coupling between quantum mechanics and gravity, offering alternative views to loop quantum gravity and string theory.

LINKS MENTIONED:

TIMESTAMPS:
- 00:00:00 Introduction
- 00:02:37 Integrating general relativity and quantum theory
- 00:05:18 The nature of classical mechanics
- 00:10:12 Discrete vs continuous space in physics
- 00:13:32 Boundary of physics and philosophy
- 00:18:44 Post-quantum theory of classical gravity
- 00:20:00 Mongrel relativity
- 00:24:00 The issue of causal structure in quantum theory of gravity
- 00:27:18 Gravity and string theory
- 00:34:26 Quantum-classical system coupling (Feynman's position)
- 00:45:31 Quantum vs post-quantum noise
- 00:58:08 Quantum thermodynamics and the multiple Second Laws
- 01:03:35 No-go theorem and classical gravity
- 01:06:09 Bohmian mechanics vs many-worlds
- 01:08:07 Advice for quantum gravity researchers
- 01:13:57 Independent study and learning
- 01:15:35 Graviton entanglement testing
- 01:20:05 The struggle of podcasting (Theories of Everything's journey)
- 01:21:26 Future projects for TOE
- 01:24:52 Gratitude for support

[Robinson]

This guy Oppenheim is a great sport, putting a lot of effort in making this material understandable for us laymen. Hats off 🎉

[smcal]

Curt you are a great moderator. You seem to ask just the questions I would have in mind while listening to your guests. Your breath of knowledge and effort you put into each podcast is amazing!

[BC-rtqe]

At the 1 hrs 10 minute mark he hits the nail on the head...if we are looking for young students to make discoveries they cannot because funding goes to those projects that support multiverse string theory Marvel movies and that is what is getting the funding and has the groups that students get into. Working in the Aerospace industry we see this all the time. We hire people who have not had good experience in educational institutions, and it takes a while to get them to speak up and think outside the box. Great gets the issues that plague science and education...Kurt I love your platform.

[SpamMouse]

What do you mean, "Watch again"? I'm repeatedly watching certain videos again to squeeze more of the content into my small brain. Thank you Curt, Mrs Curt and a cast of thousands. 👍

[gbpferrao]

Coming from a "layman": Theres a paper that justifies the complex time in the schrodinger equation intuitivelly from the classical equivalent hamilton-jacobi-bellman equation but with a wick rotation generating complex time, also justifies it around having the square root of the metric tensor


Paper is called:
Quantum Mechanics can be understood through stochastic optimization on spacetimes

[pdc]

Absolutely great idea to pre-collect questions via the query prompt

[Camelotsmoon]

31:34 I think he unknowingly found his answer... he's super unconscious about it, and it was a real life example; though he does say it's curious, so part of him recognizes it. He was looking to see if a quantum system could back react on a classical system and not contradict it... bro literally found some obscure experiments in the 90s nobody knows about, and they don't seem to contradict "the system" as a whole and exist beside it. Literally quantum mechanics in daily life.

[TheMikesylv]

Great episode curt I am not mathematician or anything else and a lot goes over my head but I understand enough. I believe it’s because of the questions you ask at the right time thanks curt

[darbrad]

Great episode. Thanks to you both.
Curt your such a gent. I hope you see a good turn around in income to fund the podcast. Thanks for all the time you put in. Watching in Ireland.

[backcountrylifemagazine]

Serious effort needs to be put in, to “couple” the various quantum perspectives AND GR. I think that there ought to be intersections where many if not all, will overlap. Unification will likely come when the “waring” factions realize that they’re all talking about the same thing, and that the “thing” WILL look and equate differently when observed from different perspectives….i.e. different realities/different dimensions….and the resulting different theories. We know this perspective shift is likely from double slit! Mapping the intersections found in coupling investigation ought to lead to epiphanies.

[michaelyounger-howard]

He goes far and above anyone so far to attempt to wrap multidimensionsal etc to our limited brains. He reached the limits of human awareness.

[soumyaripan]

Bro your channel is a gold mine. One request would be to improve the production quality in future.
The guests you bring are amazing and they need high quality audio and video to share their thoughts.
It will definitely improve your channel reach and the knowledge that's shared.

[hondovortex]

Query....if all particles were together at the Singularity, then wouldn't it all be entangled? And if it is entangled doenst that mean there IS an infinite amount of data in a single particle, or at least the sum total of all partiicle data xan be found in one? 14:37

[A.M.]

before 1:42 you seem to say, there are no multiple Approaches to be fu(o)nd, which connect, what I would call an Interaction Flux of gyro-vector-loop fields, called somehow particles or mathematicall mostly intersecting spherepackings and inter-states beyond my knowledge of periodicity and natures modularity of groups or monoids. In ways, I would image String Emergence as the entropic side of an Interflux, building its own density of unbalanced expanding Neutrino mass, whily the extropic side pushes it back together, mostly by gravity or the magneto-strictive part - called time/eigen-time or temperature inversely. Since Im not in posession of all details or sure about some efforts in such Interpretation among Neutrino/Anti-Neutrino physics or in general and if their relation to center/traject Gravity is sufficiently developed atm, my guess is as good as anyones.

And thank you, for your authentic, honest and great work!

[Julian.u]

Excellent, excellent episode! Please bring Jonathan again for a more in depth technical episode.

[KarlLew]

Wow. Physics without gobbledygook. Reminds me of listening to Feynman in person. Gravity strums the strings of quanta. Thank you both! 🎉🎉🎉🎉 🎉

[blech]

11:56 I don’t think it Carries info moreover that it’s the characterization and properties. Each particle/function doesn’t carry a brochure so to speak… it just is what it is and it’s up to us to characterize properties/information therein.

[PhysicsNative]

Query: Great discussion, I have several questions for JO. I read through the two recently published papers cited, in PRX (theory) and Nature (experiment). I had several concerns not addressed by the questions during the talk, and not addressed in the papers. First, on the theoretical front, I get that one can model the classical variables with a stochastic PDF and even couple such a PDF into an evolution equation with quantum terms. However, the classical fluctuations are not arbitrarily large, there is some constraint. Backreactions are not arbitrarily large. Yet that is the conclusion reached, that one can obtain large classical stochastic fluctuations, which may be observable even for weak coupling such as gravity. The equations produced rely in part on Markovian quantum master equations, the Lindblad eq and the Kramers-Moyal expansion, all approximations that are often inaccurate. Yes, they give closed form eqs that can be solved, but at what tradeoff? Dropping nonlinear terms that constrain backreactions. Second, on the proposed experiment for “gravitational diffusion” — In the weak limit where gravity can be treated classically the strength of the coupling precludes any measurement of the effect of gravity on quantum decoherence, say over thermodynamical decoherence effects, even at low temperatures. Feynman had some solid examples in his lectures on gravitation, which is cited in the papers. For a gravitational perturbation on atomic dynamics, observing gravitational effects on the wave function phase would require a time equal to 100x the age of the universe. Gravity does not affect phase coherence in quantum systems in the weak limit. One can try to change that by introducing an unconstrained stochasticity as Oppenheim seems to have, but this would generate paradoxes beyond what he complains about from semiclassical gravity.

[johnjcjr]

QUERY: if massive elementary particles can couple with the gravitational field, and we know that the property we call mass is a coupling of a matter field with the Higgs field, what is Mr. Oppenheim thoughts on the relationship between the Higgs field and the Gravitational field? Could they be related in some ways like the electric and magnetic fields in EM?

[CaptainPhilosophical]

Thank you Kurt for your time and efforts.