Suppose that we model the entire universe (i.e. the entirety of the known physical universe) as a huge isolated system, using molecular dynamics (MD for short).
The question is: How would you show that the entropy of such a system does in fact always increase? that it neither decreases nor stays the same?
I presented my new theory of QM yesterday.
Just that.
Best,
--Ajit
I have a request to make to physicists: Would they be willing to provide some informal feedback on my new approach to QM?
Update (2021.09.21 15:57 IST): There were unusually many blog hits for the document. ... I do like the work getting noticed, but still, I guess, a clarification is in order:
1.
To cut a somewhat long story short, I think that I can ``see'' that Machine Learning (including Deep Learning) can actually be regarded as a rules-based expert system, albeit of a special kind.
I am sure that people must have written articles expressing this view. However, simple googling didn’t get me to any useful material.
I would deeply appreciate it if someone could please point out references in this direction. Thanks in advance.
2.
Hello, World
Here is a document that jots down, in a brief, point-wise manner, the elements of my new approach to understanding quantum mechanics.
Please note that the writing is very much at a preliminary stage. It is very much a work in progress. However, it does jot down many essential ideas.
I am uploading the document at iMechanica just to have an externally verifiable time-stamp to it. Further versions will also be posted at this thread.
In introducing the very concept of the stress tensor to the beginning student, text-books always present only indirect relations involving the concept. Thus, you have the relations like "traction = (stress-transposed)(unit normal)" (i.e. Cauchy's formula, for uniform stress), or the relations for the coordinate transformations of the stress tensor, or the divergence theorem (for non-uniform stress). These are immediately followed or interspersed with alternative notations, and the rules for using them.
But what you never ever get to see, in text-books or references, is this: a *direct* definition of the stress tensor, i.e. an equation in which there is only the stress tensor on the left hand-side, and some expression involving some *other* quantities on right hand-side. Why? What possibly could be the conceptual and pedagogical advantages of giving a direct definition of this kind, and its physical meaning? I would like to ponder on these matters here, giving my answers to these and similar questions in the process.
Also remember Alcoa.