Results 21 to 30 of about 15,849,004 (287)

Does a computer have an arrow of time? [PDF]

open access: yes, 2007
In [Sch05a], it is argued that Boltzmann's intuition, that the psychological arrow of time is necessarily aligned with the thermodynamic arrow, is correct.
Maroney, Owen, O J E Maroney
core   +1 more source

UKDataServiceOpen/ICTeSSH-Arrow-of-Time: Discovering the Arrow of Time in Machine Learning

open access: yes, 2021
This release contains all the code for the research described in "Discovering the Arrow of Time in Machine Learning" as first published in the ICTeSSH 2021 conference, subsequently exteded and published in Information.
Anran Zhao
core   +1 more source

Does Quantum Electrodynamics Have an Arrow of Time? [PDF]

open access: yes, 2005
Quantum electrodynamics is a time-symmetric theory that is part of the electroweak interaction, which is invariant under a generalized form of this symmetry, the PCT transformation.
Atkinson, David, David Atkinson
core   +1 more source

A Lenient Causal Arrow of Time?

open access: yesEntropy, 2018
One of the basic assumptions underlying Bell’s theorem is the causal arrow of time, having to do with temporal order rather than spatial separation.
Nathan Argaman
doaj   +1 more source

Relating the thermodynamic arrow of time to the causal arrow [PDF]

open access: yesJournal of Statistical Mechanics: Theory and Experiment, 2008
Consider a Hamiltonian system that consists of a slow subsystem S and a fast subsystem F. The autonomous dynamics of S is driven by an effective Hamiltonian, but its thermodynamics is unexpected. We show that a well-defined thermodynamic arrow of time (second law) emerges for S whenever there is a well-defined causal arrow from S to F and the back ...
Allahverdyan, Armen E., Janzing, Dominik
openaire   +5 more sources

Discovering the Arrow of Time in Machine Learning

open access: yesInformation, 2021
Machine learning (ML) is increasingly useful as data grow in volume and accessibility. ML can perform tasks (e.g., categorisation, decision making, anomaly detection, etc.) through experience and without explicit instruction, even when the data are too ...
J. Kasmire, Anran Zhao
doaj   +1 more source

Alternative interpretation of relativistic time-reversal and the time arrow

open access: yesPhysical Review Research, 2022
It is well known that the 4-rotation in four-dimensional space-time is equivalent to the CPT transformation (C is the charge conjugation, P is the space inversion, and T is the time reversal). The standard definition of the T reversal includes the change
T. Zalialiutdinov   +4 more
doaj   +1 more source

Length of Time’s Arrow

open access: yesPhysical Review Letters, 2008
An unresolved problem in physics is how the thermodynamic arrow of time arises from an underlying time reversible dynamics. We contribute to this issue by developing a measure of time-symmetry breaking, and by using the work fluctuation relations, we determine the time asymmetry of recent single molecule RNA unfolding experiments.
Feng, Edward H., Crooks, Gavin E.
openaire   +4 more sources

Temporal Arrows in Space-Time [PDF]

open access: yes, 2013
The prevailing current of thought in both physics and philosophy is that relativistic space-time provides no means for the objective measurement of the passage of time. Kurt Gödel, for instance, denied the possibility of an objective lapse of time, both
Weinert, Friedel
core   +2 more sources

Seeing the Arrow of Time

open access: yes2014 IEEE Conference on Computer Vision and Pattern Recognition, 2014
We explore whether we can observe Time's Arrow in a temporal sequence -- is it possible to tell whether a video is running forwards or backwards? We investigate this somewhat philosophical question using computer vision and machine learning techniques. We explore three methods by which we might detect Time's Arrow in video sequences, based on distinct ...
Pickup, LC   +7 more
openaire   +3 more sources

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