prof. Paul C. W. Davies - 'Where do the laws of physics come from?'

Prof. Paul C. W. Davies
"Where do the laws of physics come from?"
Lecture as part of the conference VARCOSMOFUN’16
SZCZECIN, POLAND

#pauldavies #physics #science

[BabaYaga-ucgb]

whats good about davies is that he does not hide or ignor questions that diserve to be asked

[MelliaBoomBot]

I like listening to Prof Davies, he is so consumed by what he learns and about what he knows that he really translates this into his lectures..It's wonderful.

[harkabir]

Comes together beautifully at the end. Worth listening to repeatedly.

[eyebee-sea]

Fundamental laws of physics are by definition absolute, universal, timeless and immutable.
If they are not absolute, universal, timeless and immutable, then they are either no laws or not fundamental, but subordinate laws of more fundamental ones, that determine the why and how this subordinate laws evolve.

[MathewThomasFET]

1.05.55. The statement that all matter that could exist may not exist is strange. Why would such matter not exist?

[masterblou]

It depends how you define ''Laws of Physics'' are they the laws by which Nature operates or do you mean the descriptions we have made about them.

[manjay]

Q: "Where do the laws of physics come from?" A: Something outside the Laws of Physics. But do not get alarmed. It's OK.

[josephpeter]

laws of nature (my take):
1) could be time dependent (start of universe governed by different laws vs different laws at the present state)
2) space dependent (different laws around a black hole vs around rest of relatively homogeneous space)
3) laws within limits of human perception (and that has been deduced mathematically and some verified experimentally)
4) laws beyond human perception (that may help explain dark matter and dark energy)

[petersinclair]

Not all infinities have the same magnitude. There are more irrational numbers than rational numbers. Equally, does it follow that a specific infinity of universes necessarily contains all possibilities? An actualised infinite set that is a reduced set of a larger theoretical set?

[jean-pierredevent]

I am very impressed that he can discuss on equally high level both with hard science people and professional philosophers. Philosophers can be very dangerous people.

[ChaplainDaveSparks]

To my thinking, to have a multiverse you'd first need a "metaverse" to control the creation of each universe. For example, do they exist in parallel, with each having a separate "big bang" or other beginning event?

One other possibility would be that each "branches" off of a previous universe at a particular "decision point". For example, Hitler's biological parents are within proximity of one another. In one universe, they meet and things proceed as we know them today. In another, one of them is distracted and they never meet. Now take this down to the very smallest (quantum?) level where two particles interact in one way or another, spawning alternative universes. Sounds absurd, but if you can have *INFINITE* universes, why not?

The only remaining question is whether the "metauniverse" operates in "real time" or not. That gets to the question of whether everything than *CAN* exist *DOES* exist. It might be conceivable that it doesn't exist *YET* but might in the "future", however that is designed, implying that not only space but time itself are "nested" or "recursive", etc.

[TheGreatAlan]

It's very unsatisfying to think this is a simulation because WHAT created the entity that created this simulation ?

[charlieangkor]

The probability that two objects will attract due to gravitation is 100%. Now I described gravity the way quantum theorists describe other forces: a statement involving probabilities, which is useless to predict actual outcome of an experiment. And this counts as science.

[nigelwilliams]

Isn't the law of physics the diagnostics of the investigation?

[websurfer]

You need to go find when the universe was differentiated enough to allow for initial conditions to appear?? And whatever led to the appearance of those conditions determined the evolution of the universe to present!!

[bjharvey]

All "laws of physics" are concepts on a page. The universe just does what it does and it could not be different. The universe is oblivious to whatever laws we think up.

[KipIngram]

35:50 - Such a shame we just lost John Conway. Corona virus casualty. :-(

[masterblou]

The language in which we do mathematics is a human invention, but not mathematics themselves, which are abstract representations of what occurs in nature. The realm of ideas is abstract, meaning existing in thought or as an idea but not having a physical or concrete existence.

So are there things in the Universe that are not physical, yes all ideas are technically abstract by definition. You can't destroy abstract things.

[PrivateSi]

Here's my take... Quite realistic premises but observers can affect quantum states

Liquid Crystal Space -- Bottom-Up Universe Thought Experiment.. Colloidal Crystal Multiverse

Constraints: 3D, minimal base rules + parts. No singularities with the infinite possible

Like charges repel, unlike attract. -ve flux balances close-packed +ve lattice cells
1 Cell volume of flux -6, Cell +6. Pulls 6 opposites to light speed in 1 cell length
Escape velocity = light speed (C) tied to the constant time light takes to move between cells

Tunneling: stretched, faster than light front, light speed or slower rear

Tunneling cells form in phase extrons+holons that often annihilate to regular='empty' lattice
Tunneling particles reform elsewhere and their original space 'heals' as regular empty lattice

Particles: Inflows repel. 6 equatorial and 2x3 polar flows (-6 if poles flow in, +6 if out)

Extron: extra cell compresses the lattice, pulls flux (that pulls cells) that repel as rays
Holon: flux-rich missing cell hole stretches the lattice, pulls in cells that repel as rays
Dipolons: extron + holon.. Diextron: +ve + -ve extron.. Diholon: +ve + -ve holon
Tempons: Cellon: lattice chunk.. Fluxon: holes.. heal to extrons+holons and/or/then annihilate

3D polar flows are more concentrated than flat equatorial flows so effect particles more
Moving extrons push cells that -ve flux space behind pulls in with an inertia-providing kick
Particles are surrounded by pilot waves that can diffract, interfere and alter trajectory
Strong gravity may force (some) particle outflows to repel back to its inflows in a few patterns

Charge / Entanglement: -ve inflows, +ve outflows. Polar flow count. Lattice, holon, extron charge

Close flows attract or repel, regional gravity fields affect velocity and direction
Flows are a contiguous unit, changing spin or cutting it affects both ends at once

Dipolon / Matter-Antimatter: gravity shrinks matter, lowering charge emission phase resolution

Close out of phase extron+holon pairs form dipolons, in phase annihilate and radiate excess flux
A feeding black hole's core extrons+holons are forced in phase and annihilate. A universe grows

Black Hole Universes / Recursive Conformity: Big Bang = black holes colliding and merging

Gravity compacts extrons+holons, blurs phases, charge flow stops at light speed. Annihilation
Total energy and matter potential is conserved. No fine tuning, universes follow the same rules
Level n +/- particle lattice fields or other (joined) particle fields (+ free particles) feasible

Mass / Gravity / Dark Energy: lattice charge balance, charge inflow, entanglement, universe shell

Mass is (the number of) out of place lattice cells. An object's extrons + holon charge flow
Mass pulls flux pulls mass. Lattice vibes up to 1 cell radius and light speed effect matter
Outflows bounce in all directions, inflows lead to the center. Outflows tend to join inflows
Mass uses up flux so void cells repel more. Universes trap cells so gravity shrinks the lattice
Universes grow, shells thin, excess flux radiates, lattice expands. Shell gravity cancels inside

Photon / Light / Time: relatively quantum.. particle vibes ripple charge outflows

Charge flow has mass, transverse peaks and troughs concentrate it. 2D adds effective area
Photons make lattice pilot waves that diffract in a slit but are overridden by a detector's fields

Moves between cells in a constant time (+ universe expansion) as denser lattice takes more energy
Gravity shrinks and acceleration compresses the lattice so both absolutely slow light locally
Units shrink too and acceleration slows kinetic processes so local vacuum light speed measures C
Velocity stretches kinetic processes in time as they travel more to complete. Clocks run slower

The Standard Model: the possibilities are numerous. Some SM particles may be tempons

[timhallas]

The bottom line is, we tend to see a designer in the background, because we are designers. Nature is in fact, it's own designer. Like the shape of a river channel, it emerges from nothing, and appears to have been designed, but in fact is the result of forces acting upon one another, with no intent to produce a particular shape. All of nature is an emergent process.