The quantum mechanics of the present
- URL: http://arxiv.org/abs/2104.09945v1
- Date: Tue, 20 Apr 2021 13:12:46 GMT
- Title: The quantum mechanics of the present
- Authors: Lee Smolin and Clelia Verde
- Abstract summary: We propose a reformulation of quantum mechanics in which the distinction between definite and indefinite becomes the fundamental primitive.
Inspired by suggestions of Heisenberg, Schrodinger and Dyson, we propose that the distinction between past, present and future is derivative of the fundamental distinction between indefinite and definite.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We propose a reformulation of quantum mechanics in which the distinction
between definite and indefinite becomes the fundamental primitive.
Inspired by suggestions of Heisenberg, Schrodinger and Dyson that the past
can't be described in terms of wavefunctions and operators, so that the
uncertainty principle does not apply to past events, we propose that the
distinction between past, present and future is derivative of the fundamental
distinction between indefinite and definite. %The same is the case for the
quantum world versus classical world distinction of the Copenhagen
interpretation.
We then outline a novel form of presentism based on a phenomonology of
events, where an event is defined as an instance of transition between
indefinite and definite. Neither the past nor the future fully exist, but for
different reasons. We finally suggest reformulating physics in terms of a new
class of time coordinates in which the present time of a future event measures
a countdown to the present moment in which that event will happen.
Related papers
- What an event is not: unravelling the identity of events in quantum theory and gravity [0.0]
We explore the notion of events at the intersection between quantum physics and gravity.
By going through various experiments and thought experiments, we analyse which properties can and cannot be used to define events in such non-classical contexts.
arXiv Detail & Related papers (2024-03-29T21:22:16Z) - Quantum Instability [30.674987397533997]
We show how a time-independent, finite-dimensional quantum system can give rise to a linear instability corresponding to that in the classical system.
An unstable quantum system has a richer spectrum and a much longer recurrence time than a stable quantum system.
arXiv Detail & Related papers (2022-08-05T19:53:46Z) - Correspondence Between the Energy Equipartition Theorem in Classical
Mechanics and its Phase-Space Formulation in Quantum Mechanics [62.997667081978825]
In quantum mechanics, the energy per degree of freedom is not equally distributed.
We show that in the high-temperature regime, the classical result is recovered.
arXiv Detail & Related papers (2022-05-24T20:51:03Z) - The open past in an indeterministic physics [0.0]
We show that by upholding principles of finiteness of information one can entail such a possibility.
We provide a toy model that shows how the past could be fundamentally indeterminate.
arXiv Detail & Related papers (2022-05-23T18:01:03Z) - The time-energy uncertainty relation for quantum events [0.0]
Textbook quantum mechanics treats time as a classical parameter, and not as a quantum observable with an associated Hermitian operator.
quantum clocks allow for a measurement of the "time at which an event happens" by conditioning the system's evolution on an additional quantum degree of freedom.
We derive here two em true uncertainty relations that relate the uncertainty in the quantum measurement of the time at which a quantum event happens on a system to its energy uncertainty.
arXiv Detail & Related papers (2021-08-31T16:57:12Z) - Time and Evolution in Quantum and Classical Cosmology [68.8204255655161]
We show that it is neither necessary nor sufficient for the Poisson bracket between the time variable and the super-Hamiltonian to be equal to unity in all of the phase space.
We also discuss the question of switching between different internal times as well as the Montevideo interpretation of quantum theory.
arXiv Detail & Related papers (2021-07-02T09:17:55Z) - The Concept of Entropic Time: A Preliminary Discussion [0.0]
The concept of entropic time is introduced on the basis of information acquisition.
The atemporal nature of the collapse' of the state vector associated with such information gain is discussed.
It is shown that energy is conserved under subjective collapse schemes whereas, in general, under objective collapse it is not.
arXiv Detail & Related papers (2020-11-01T13:40:24Z) - The arrow of time in operational formulations of quantum theory [0.0]
We show that the asymmetry of the operational formulations does not reflect a fundamental time-orientation of physics.
The main asymmetry in quantum theory is the difference between knowns and unknowns.
arXiv Detail & Related papers (2020-10-12T14:27:21Z) - There is only one time [110.83289076967895]
We draw a picture of physical systems that allows us to recognize what is this thing called "time"
We derive the Schr"odinger equation in the first case, and the Hamilton equations of motion in the second one.
arXiv Detail & Related papers (2020-06-22T09:54:46Z) - Bell's theorem for trajectories [62.997667081978825]
A trajectory is not an outcome of a quantum measurement, in the sense that there is no observable associated with it.
We show how to overcome this problem by considering a special case of our generic inequality that can be experimentally tested point-by-point in time.
arXiv Detail & Related papers (2020-01-03T01:40:44Z) - Projection evolution and quantum spacetime [68.8204255655161]
We discuss the problem of time in quantum mechanics.
An idea of construction of a quantum spacetime as a special set of the allowed states is presented.
An example of a structureless quantum Minkowski-like spacetime is also considered.
arXiv Detail & Related papers (2019-10-24T14:54:11Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.