In the present study we develop the concept of time in Physics, with the help of the newest results of Hadronic Physics, which is a new noncanonical physical theory. Especially lately the author and his collaborators have developed three noncanonical models: a) The Caldirola-Montaldi model, where the concepts of elementary time and elementary length are introduced. This model is based on the review of the notion of the derivative in the Schrodinger equation, so that this equation is converted into a difference equation. The model is noncanonical by its nature in respect to the time, and moreover it is dissipative. The application of the model to the theory of Dirac permits the definition of the Caldirola time, which describes the interaction of two physical systems as well as the definition of the stable and unstable states of particles. B) The so-called Q-model, which generalizes the classical mathematical analysis and is applied to Hadronic Physics and to the colculation of the masses of several particles. The Q-model is also noncanonical in time and dissipative. c) The third model is the s--called small distance derivative model, which has been developed by Gonzalez-Diaz and by Jannussis. Also the third model is noncanonical and dissipative. The main result of this model is that the energy of particles with initial mass zero on the light cone, is not continuous as predicted by the special relativity theory of Einstein, but is quantized. The third model is connected explicitly with the Max-Planck length L-10-33 cm and time r-10-43 sec, and is applied to quantum gravity. In general all three above models are partial cases of the Lie-admissible formulation which, as it has been proved by Jannussis and his collaborators, is a nonocanonical theory in respect of the time
Στην παρούσα μελέτη αναπτύσσεται η έννοια του χρόνου στη Φυσική με τη βοήθεια των νεοτέρων αποτελεσμάτων της Αδρονικής Φυσικής, η οποία γενικά είναι μια νέα μη κανονική Φυσική Θεωρία. Συγκεκριμένα τελευταίως αναπτύχθηκαν από το συγγραφέα και τους συνεργάτες του τρία μη κανονικά μοντέλα: α) το μοντέλο των Cardirola-Montaldi στο οποίο εισάγεται η έννοια του στοιχειώδους χρόνου, β) το καλούμενο Q-μοντέλο το οποίο γενικεύει την κλασική μαθηματική ανάλυση και εφαρμόζεται στην Αδρονική Φυσική και γ) το μοντέλο του Gonzalez-Diaz and Jannussis με εφαρμογές στην κλίμακα Planck L - 10-33 cm, τ=10-43 sec και στην κβαντική Βαρύτητα
