Results 11 to 20 of about 700,172 (190)

Interventionism in Statistical Mechanics

open access: yesEntropy, 2012
I defend the idea that the fact that no system is entirely isolated (“Interventionism”) can be used to explain the successful use of the microcanonical distribution in statistical mechanics.
Stephen Leeds
doaj   +1 more source

The Universal Arrow of Time [PDF]

open access: yesFoundations of Physics, 2012
Statistical physics cannot explain why a thermodynamic arrow of time exists, unless one postulates very special and unnatural initial conditions. Yet, we argue that statistical physics can explain why the thermodynamic arrow of time is universal, i.e., why the arrow points in the same direction everywhere.
Kupervasser, Oleg   +2 more
openaire   +3 more sources

Time, the Arrow of Time, and Quantum Mechanics

open access: yesFrontiers in Physics, 2018
It is brought forward that viable theories of the physical world that have no variable at all that can play the role of time, do not exist; some notion of time is one of the very first ingredients a candidate theory should possess.
Gerard 't Hooft
doaj   +1 more source

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

Gravitational Entropy and Inflation

open access: yesEntropy, 2013
The main topic of this paper is a description of the generation of entropy at the end of the inflationary era. As a generalization of the present standard model of the Universe dominated by pressureless dust and a Lorentz invariant vacuum energy (LIVE ...
Øystein Elgarøy, Øyvind Grøn
doaj   +1 more source

The arrow of time in operational formulations of quantum theory [PDF]

open access: yesQuantum, 2021
The operational formulations of quantum theory are drastically time oriented. However, to the best of our knowledge, microscopic physics is time-symmetric.
Andrea Di Biagio   +2 more
doaj   +1 more source

Wormholes and the thermodynamic arrow of time

open access: yesPhysical Review Research, 2020
In classical thermodynamics, heat cannot spontaneously pass from a colder system to a hotter system, which is called the thermodynamic arrow of time. However, if the initial states are entangled, the direction of the thermodynamic arrow of time may not ...
Zhuo-Yu Xian, Long Zhao
doaj   +1 more source

Quantum Computation and Arrows of Time

open access: yesEntropy, 2020
Quantum physics is surprising in many ways. One surprise is the threat to locality implied by Bell’s Theorem. Another surprise is the capacity of quantum computation, which poses a threat to the complexity-theoretic Church-Turing thesis.
Nathan Argaman
doaj   +1 more source

Home - About - Disclaimer - Privacy