Spacetime : Arena or Reality ?
نویسنده
چکیده
منابع مشابه
Spacetime and Reality
Should physicists deal with the question of the reality of spacetime? It is argued that they should since this is a question about the dimensionality of the world and it is physics that should answer it. Almost a hundred years have passed since 1908 when Hermann Minkowski gave a fourdimensional formulation of special relativity according to which space and time are united into an inseparable fo...
متن کاملSpace of spaces as a metric space
In spacetime physics, we frequently need to consider a set of all spaces (‘universes’) as a whole. In particular, the concept of ‘closeness’ between spaces is essential. However there has been no established mathematical theory so far which deals with a space of spaces in a suitable manner for spacetime physics. Based on the scheme of the spectral representation of geometry, we construct a spac...
متن کاملSpacetime and Reality: Facing the Ultimate Judge
Over a hundred years ago in his paper Space and Time Hermann Minkowski demonstrated the profound meaning of the relativity postulate – the experimental fact that physical phenomena are the same in all inertial reference frames implies that the Universe is an absolute four-dimensional world in which all moments of time have equal existence due to their belonging to the fourth (time) dimension. S...
متن کاملThe Canonical Approach to Quantum Gravity: General Ideas and Geometrodynamics
The really novel feature of General Relativity (henceforth abbreviated GR), as compared to other field theories in physics, is that spacetime is not a fixed background arena that merely stages physical processes. Rather, spacetime is itself a dynamical entity, meaning that its properties depend in parts on its specific matter content. Hence, contrary to the Newtonian picture, in which spacetime...
متن کاملOn the Reality of Minkowski Space
Should physicists deal with the question of the reality of Minkowski space (or any relativistic spacetime)? It is argued that they should since this is a question about the dimensionality of the world at the macroscopic level and it is physics that should answer
متن کامل