The past
revolutions and the current problem with Quantum
Physics
History of Mathematics met two great revolutions. Both of
them completely changed its exterior aspect as wall as its
social function. Initial momentum to these revolutions was
provided by the impossibility to keep living according to
the old canon. That is, to be unable to express and to face
in exact form the fundamental problems of the natural
sciences using the existing mathematical language. The
first is linked with the name of Descartes
and the second to those of Newton and
Leibniz. Yet both of them are much more than such
great names. According to Gibbs, Mathematics is a language,
and the essence of these two revolutionary breakthroughs
was the creation of new far-reaching mathematical
languages.
Indeed Greek mathematics spoke in the language of
Aristotelian logic which formalized with due rigor the
everyday language. The result of the first
revolution was that Mathematics started to speak in the
language of Commutative Algebra, while the second taught to
speak in the language of Differential Calculus.
Newton’s classical treatise “Principia Matematica Naturalis
Philosophiae” is in essence the first textbook about that
part of the grammar of the language of the nature of
“Differential Calculus” which he was able to decipher.
Obviously this first book allowed to understand only the
most simple phrases of the Nature. Subsequent generations
of mathematicians and physicists, improving their ability
to speak these languages, managed to understand even more
complicated sentences, and in parallel new more
elaborated and completed versions of the Newtonian language
were written.
From its very birth, Differential Calculus is the mother
language of Classical Physics. Thanks to Differential
Calculus, Maxwell was able to discover by his mere pencil
the foundations of modern civilization: electromagnetic
waves. And Einstein was able to describe the geometrical
shape of our Universe. On the other hand, a century-long of
experience has made up our minds that it is not
possible to describe with this language the phenomena of
Quantum Physics. Past century’s physicists looked
for tools to describe the quantistic world within
mathematics, and in some cases they were forced to invent
their own mathematics. Remarkable examples of such
inventions are the Dirac’s “delta function” and the
Feynmann’s “path integral”. From all that was found by
physicists within contemporary mathematics or made up by
their own, a strange slang aroused, in which
elements of Differential Calculus are mingled with Hilbert
spaces, measure theory, and operator-valued generalizations
of functions, and so on. This is nothing but a
slang, not a consistent natural language in which it would
be possible to formulate adequately the essence of quantum
phenomena. Inability of modern mathematics to face this
challenge is brightly shown by the fact that the existing
theory of quantum fields and its generalizations that claim
to describe the most fundamental principles of Unvierse,
are mathematically based on the “theory of perturbations”.
A basis far from solid.
Therefore this manifest mathematical inconsistency of
present quantum theories unequivocally points out that the
mathematical principles of the quantistic component of the
natural philosophy are yet to be settled. Thus the
quest for the natural mathematical language for quantum
theories is one of the deepest problems of modern
mathematics. Such a challenge is absolutely
independent of the current problems of theoretical physics
and continuous seasonal changes of leading trends. Yet such
an exposition of the problem would be just a pointless
philosophical exercise if it was not reformulated in a
concrete way and turned into a well-posed scientific
problem. The state of mathematics 30-40 years ago would not
allow that. But the recent advances in understanding the
nature of non linear PDEs open new possibilities to us.