Has Physics Lost Its Way?

socratus

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Dec 10, 2008
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Has Physics Lost Its Way?
By Jim Al-Khalili, March 17, 2020
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THE DREAM UNIVERSE
How Fundamental Physics Lost Its Way
By David Lindley
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The title of David Lindley’s new book, “The Dream Universe,”
may be unprepossessing, but his subtitle —
“How Fundamental Physics Lost Its Way” —
tells you what to expect: a polemical argument from a writer
who won’t be pulling his punches.
---
https://www.nytimes.com/2020/03/17/books/review/dream-universe-david-lindley.html
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socratus

socratus
Dec 10, 2008
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According to Lindley, something happened in 20th-century theoretical physics
that caused some in the field to “reach back to the ancient justifications
for mathematical elegance as a criterion for knowledge, even truth.”
In 1963, the great English quantum physicist Paul Dirac famously wrote,
“It is more important to have beauty in one’s equations than to have them fit an experiment.”
To be fair, Dirac was a rather special individual,
since many of his mathematical predictions turned out to be correct,
such as the existence of antimatter, which was discovered a few years
after his equation predicted it.
But other physicists took this view to an extreme.
The Hungarian Hermann Weyl went as far as to say,
“My work always tried to unite the truth with the beautiful,
and when I had to choose one or the other, I usually chose the beautiful.”
Lindley argues that this attitude is prevalent among many researchers working
at the forefront of fundamental physics today and asks whether these physicists
are even still doing science if their theories do not make testable predictions.
After all, if we can never confirm the existence of parallel universes,
then isn’t it just metaphysics, however aesthetically pleasing it might be?
But Lindley goes further by declaring that much fundamental research,
whether in particle physics, cosmology or the quest to unify gravity
with quantum mechanics, is based purely on mathematics and should not be regarded
as science at all, but, rather, philosophy.
And this is where I think he goes too far.
Physics has always been an empirical science;
just because we don’t know how to test our latest fanciful ideas today does not mean we never will.
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https://www.nytimes.com/2020/03/17/books/review/dream-universe-davidlindley.html
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socratus

socratus
Dec 10, 2008
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Book: Quantum Enigma,
2006, by Bruce Rosenblum and Fred Kuttner.
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My comment
For most physicists quantum mechanics is not enigma.
Most physicists tend to be pragmatists and use their
macroscopic equipment to solve concrete, practical problem.
They say: ''If it works, it's true.'' and deeper meaning doesn't need.
---
But the authors Bruce Rosenblum and Fred Kuttner
(and few other authors) called the QM '' . . . shocking,
ridiculous, crazy, strange, hard to accept, make no sense . . . . etc ) . . .
from philosophical view . . . when they tried to understand
the nature of the microworld (wave-particle duality,
quantum jumps, wavefunction collapses, . . . etc)
---
In my opinion, if we have the real model of quantum particle
then the QM can be understood from philosophical view.
#
We cannot see a single Planck's (h) , or single Boltzmann's (k),
or a single Einstein's ( E = mc^2 ) but having true model of
quantum particle and thanks to mathematics and human's logic
we can understand how microworld can work.
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socratus

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Quantum effects are essentially undetectable above
a certain size (h) and velocity (c) . . . . and therefore our consciousness
collapse to understand the Philosophy of Quantum mechanics . . . . but . . .
Math and Physics laws can correct our misunderstanding
. . . if we change our thought about some Physics' dogmas
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socratus

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Boltzmann brains
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Boltzmann brains is a theoretical prediction of random
fluctuations to understand the universe as a whole.
A century ago Boltzmann considered a “cosmology”
where the observed universe should be regarded
as a rare fluctuation out of some equilibrium state
(the entropy of a closed system always increases)
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The Universe (as whole) is a flat, smooth, homogenous, isotropic.
After every cosmic event horizon there is another similar cosmic
event horizon and so and so . . . to infinity.
There is a fundamental fact in the Nature that the ordinary matter
in the Universe (as whole) is very few, and its critical density is
about 9.9 x 10^-30 g/sm^3. That masses of density cannot ''close''
the Universe into a sphere and therefore the Universe as whole is ''open''- flat.
#
Space is ''pretty flat'' to within 0,5%, according to the WMAP 2013 measurement.
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In this infinite, zero cold (T=0K) equilibrium ''closed'' continuum
quantum fluctuations take place as Quantum physics says to us today
and Boltzmann said to us long time ago.
( ''Boltzmann Brain'' saves the universe from heat death)
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socratus

socratus
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Sometimes scientists create ''Sacred Cows'' and the general public and students
of science hold the words of scientists in awe even when these are merely "latinized nonsense" . . .
1 - Dark energy: a mysterious force causing the accelerating expansion of the universe, intriguing in the math labs . . . 2 - Cosmic inflation: theory says that a fraction of a second after the big bang, the universe grew exponentially, expanding so that tiny fluctuations were stretched into the seeds of entire galaxies. . . . 4 - Neutrinos are ghostly particles that pass through most matter undetected. In fact, trillions of neutrinos pass through your body every second without your knowledge. . . . 5 - Feynman diagram is a drawing that uses lines and squiggles to represent a particle interaction . . . but have you ever noticed how they interact in reality . . . 6 - Antimatter . . . why we are still live, when equal amounts of matter and antimatter should have been created in the big bang . . . why matter dominates the universe (?) . . . if ordinary matter dominates the universe, why the amount of it is only about 5% . . . (?) . . . 7 - Entangled particles are extremely strange. Measuring one automatically determines the state of the other, instantaneously. Einstein described quantum entanglement as “spooky action at a distance” . . . 8 - Holographic universe may be like a hologram where spacetime is chunked into 2-D bits that only appear three-dimensional from our perspective . . . do you have desire to discuss the nature of time and space using hologram ? . . . 9 - Standard Model . . . Periodical table of quantum fundamental particle. The Standard Zoo of particle , a supersymmetric particle . . . and . . . the photon (carrier of light) , the Higgs boson (giver of mass) . . . quarks and antiquarks and tetraquarks and gluon and mesons (mesons are typically unstable, so they decay in a shower of electrons and neutrinos ) . . . 10 - The more powerful LHC will create new quantum particle . . . for Sandard Model
 

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socratus

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Cosmology - Cosmic Vacuum -CMBR

Can the Universe exist without Nothingness / Cosmic Vacuum?

What is the role of Cosmic Vacuum in the Universe?

The facts say: the universe as whole is Cosmic Vacuum that contains very few (about 5%) gravity-matter.

The critical mass-density in universe is 9.9 x 10^-30 g/cm^3.

According to the WMAP 2013 measurement the Cosmic Space is ''pretty flat'' to within 0,5%.

The Cosmic Vacuum is homogeneous, isotropic, flat, smooth and very cold and after one Cosmic horizon
there is another Cosmic horizon – similar one -- . . . and so, and so . . . to infinity (∞)

Cosmic vacuum is in the state of the lowest possible energy, but this energy is infinite (∞) .

The Cosmic energy-vacuum is filled with Einstein / Dirac's negative-virtual-dualistic-particles:
E= ± mc^2 and thanks to their fluctuations the Cosmic vacuum is in constant vibration on different levels.

Today the knowledge of Cosmic energy-vacuum is ignored by scientific academia,
even so the Universe cannot exist without the absolute and infinite Cosmic energy-vacuum
and its “bizarre and mysterious-dualistic-virtual-particles’’.

Thanks to the Cosmic energy-vacuum the Gravity world and life can exist.
Everything is in the Cosmic energy-vacuum and the Cosmic energy-vacuum is everywhere in everything

CMBR
All gravity-matter in the universe (as whole) is only about 5%.
This 5% of ordinary matter cannot be responsible for Cosmic Microwave Background Radiation.
Therefore, the CMBR (that spread all over the universe) must be an unknown source.
This an unknown source of CMBR can be an infinite Cosmic Vacuum itself
(the fluctuations of Dirac's virtual particles in the vacuum sea)
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Blackleaf

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why matter dominates the universe (?) . . . if ordinary matter dominates the universe, why the amount of it is only about 5% . . .

The Universe consists of 68% dark energy, 27% dark matter and 5% ordinary matter. Ordinary matter doesn't dominate the Universe.
 

socratus

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Dec 10, 2008
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About Cosmic Vacuum
“‎In modern physics, there is no such thing as “nothing.”
Even in a perfect vacuum, pairs of virtual particles are constantly being created and destroyed.
The existence of these particles is no mathematical fiction.
Though they cannot be directly observed, the effects they create are quite real.
The assumption that they exist leads to predictions that have been confirmed by experiment to a high degree of accuracy.”
― Richard Morris
#
Although we are used to thinking of empty space as containing nothing at all,
and therefore having zero energy, the quantum rules say that there is some uncertainty about this.
Perhaps each tiny bit of the vacuum actually contains rather a lot of energy.
If the vacuum contained enough energy, it could convert this into particles, in line with E-Mc^2.
/ Book: Stephen Hawking. Pages 147-148. By Michael White and John Gribbin /
#
The Cosmic Vacuum is still the terra incognita
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socratus

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Does The Singularity Exist?
Singularity is a point in spacetime where incredible amount of matter is compressed into a tiny space of zero size and infinite density.
But, the question is, ” Does it exist?”

Singularity is not a physical object, it is a mathematical entity. It arises when the denominator is zero.
We all know we cannot divide by zero, so that’s a problem and mathematicians call that value singularity.
If a singularity popes up in an equation, it means that the equation has been to make predictions in areas
where it doesn’t cover like using Newton’s Gravitational Equation to describe a black hole.

General Relativity fails at the quantum scale and needs to be replaced by Quantum Theory of Gravity which we don’t have.

https://knowledgeglutton.home.blog/...h=e18c296150d4ad94faa0ab42f95bfde7#comment-21
 

socratus

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Dec 10, 2008
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Singularity.
Other opinions:
“Singularities also occur in nature as limits when something is based on a mathematical model
that tends to infinity, but in real life it just gets very large, like two point particle planets falling
toward each other that mathematically spiral infinitely fast, but in real life would have finite radii
and their velocity would be a finite large number before they collide.”
/ Jack Stoppenbach /
#
“Mathematically there are lots of singularities like Ring singularity, isolated singularity etc.,.
These are wonderful concepts. The moment a particular border is crossed, it tends to infinity.
1/0 is infinity. It means even if you add infinite amount of space it will not be equal matter.
or even if a matter is divided infinitely, it will not end in zero. The empty space in which
the universal matter exists is a big singularity whose curvature we cannot see.”
/ HARIHARSUDEN V/
#
“Particle physics has something similar to singularities that are dealt with through renormalisation,
so that the bare electron charge may be infinite, but the charge we see is the result of screening
by the quantum vacuum acting as a dielectric.

The singularity in a black hole arises when you make the assumption that matter behaves as a classical
fluid acting under gravity alone. This is as implausible as making the same assumption about the Earth
and concluding it should have collapsed. There are mechanisms that may inhibit the formation of a singularity,
such as the Exclusion Principle. This could lead to a scenario in which the black hole acts as a super-accelerator
that produces a quark-gluon plasma, with a singularity being averted when the Exclusion Principle leads
to a "big bounce", somewhat akin to supernova that leaves behind a quark star instead of a neutron star.
The Uncertainty Principle alone would mean that in order to achieve a singularity, you would need
to allow particles with infinite energy.

What all of this means is that quantum mechanics may prevent the singularity and without
its incorporation into GR we are going to get silly results.”
/ Russell Childs /
#
All known electromagnetic radiation from DC to highest frequencies has its origin on the surface of an object.
So the singularity does not exist in reality, it is a result of idealization (point-like mass with infinitive charge density).
/ Gerd Termathe /
#
"The idea of anything real that's zero dimensional is incoherent, and there's not going to be anything with infinite density, either.
There are a lot of bad ontological claims made by physicists based on reifying mathematics.
Could there be something unusually dense and small, though? Sure."
/ Terrapin Station /
 

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socratus

socratus
Dec 10, 2008
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Singularity
Other opinion
"The subject you discussed is whether "a" singularity can exist. The answer is no.
A singularity is a mathematical phenomenon that indicates that the physics
has broken down and that we need better theory.
There's no actual singularity inside a black hole, a zero-dimensional point of infinite mass or whatever.
That's a mathematical anomaly that doesn't exist in reality."
/ wtf /
 

socratus

socratus
Dec 10, 2008
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The Quantum Collapse of Light/Electron in the Lorentz Transformation.
---.
1 - The velocity of quantum of light is constant in all inertial frames, independently
of the velocity of the moving inertial frames (as stars, planets . . . etc.)
/Michelson-Morley experiment/
2 - According to the Lorentz transformations the constant velocity of light (c) is in fact a variable velocity of light.
3 – The hero in Einstein’s SRT is the quantum Light/Electron.
4 – All effects of SRT (length contraction, time dilation, space-time distortion . . . etc.)
tied with behaviour and natural changes of the quantum particle: Light/Electron.
====…
 

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