Results 21 to 30 of about 2,736,099 (297)

The maximum entropy ansatz in the absence of a time arrow: fractional pole models

, 2006
18 pages, 3 ...
Tryphon T. Georgiou
core   +6 more sources

Time arrow without past hypothesis: a toy model explanation [PDF]

New Journal of Physics, 2023
The laws of Physics are time-reversible, making no qualitative distinction between the past and the future—yet we can only go towards the future. This apparent contradiction is known as the ‘arrow of time problem’.
Pablo Arrighi, Gilles Dowek, Amélia Durbec   +2 more
doaj   +2 more sources

Can the Arrow of Time be understood from Quantum Cosmology? [PDF]

The Arrows of Time (Springer, Heidelberg 2012), pp. 191-203, 2009
I address the question whether the origin of the observed arrow of time can be derived from quantum cosmology. After a general discussion of entropy in cosmology and some numerical estimates, I give a brief introduction into quantum geometrodynamics and argue that this may provide a sufficient framework for studying this question.
A. Simone, A.A. Starobinsky, B.S. DeWitt, C. Kiefer, C. Kiefer, C. Kiefer, C. Kiefer, C.A. Egan, G. Hinshaw, G.W. Gibbons, H.D. Zeh, J.J. Halliwell, M. Albers, M. Novello, R. Holman, R. Penrose   +15 more
arxiv   +3 more sources

Wormholes and the Thermodynamic Arrow of Time [PDF]

Phys. Rev. Research 2, 043095 (2020), 2019
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 be guaranteed.
Zhuo-Yu Xian, Long Zhao
arxiv   +2 more sources

Temporal Asymmetry, Entropic Irreversibility, and Finite-Time Thermodynamics: From Parmenides–Einstein Time-Reversal Symmetry to the Heraclitan Entropic Arrow of Time [PDF]

Entropy, 2012
In this paper, we combine the two universalisms of thermodynamics and dynamical systems theory to develop a dynamical system formalism for classical thermodynamics. Specifically, using a compartmental dynamical system energy flow model we develop a state-
Wassim M. Haddad
doaj   +2 more sources

Does a Computer have an Arrow of Time? [PDF]

, 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. Schulman gives an explicit physical mechanism for this connection, based on the brain being representable as a computer, together with certain thermodynamic properties of computational processes ...
B. Loewer, B. Piechocinska, C.H. Bennett, C.M. Caves, C.M. Caves, D.Z. Albert, H. Price, H. Reichenbach, H.D. Zeh, J. Bub, J. Earman, J. Earman, J.D. Norton, L. Boltzmann, L. Sklar, L. Sklar, L.S. Schulman, L.S. Schulman, L.S. Schulman, M.H. Partovi, O.J.E. Maroney, O.J.E. Maroney, Owen J. E. Maroney, P. Horwich, R. Landauer, R.C. Tolman, S. Turgut, S.W. Hawking, S.W. Hawking, S.W. Hawking, T. Maudlin, T. Short   +31 more
arxiv   +5 more sources

Fluctuation, Dissipation and the Arrow of Time [PDF]

Entropy 13 (2011) 2024-2035, 2011
The recent development of the theory of fluctuation relations has led to new insights into the ever-lasting question of how irreversible behavior emerges from time-reversal symmetric microscopic dynamics. We provide an introduction to fluctuation relations, examine their relation to dissipation and discuss their impact on the arrow of time question.
Bochkov, Callen, Einstein, Messiah, Michele Campisi, Peter Hänggi, Stratonovich   +6 more
arxiv   +9 more sources

Vacuum Structure and the Arrow of Time [PDF]

, 2011
We find ourselves in an extended era of entropy production. Unlike most other observations, the arrow of time is usually regarded as a constraint on initial conditions. I argue, however, that it primarily constrains the vacuum structure of the theory. I exhibit simple scalar field potentials in which low-entropy initial conditions are not necessary, or
A. Linde, J. D. Barrow, J. D. Bekenstein, Raphael Bousso, W. Fischler   +4 more
arxiv   +4 more sources

Gravitational Entropy and the Second Law of Thermodynamics

Entropy, 2015
The spontaneous violation of Lorentz and diffeomorphism invariance in a phase near the big bang lowers the entropy, allowing for an arrow of time and the second law of thermodynamics. The spontaneous symmetry breaking leads to
John W. Moffat
doaj   +4 more sources

Entropy, Biological Evolution and the Psychological Arrow of Time

Journal of Modern Physics, 2016
We argue that in Universes where future and past differ only by the entropy content a psychological arrow of time pointing in the direction of entropy increase can arise from natural selection in biological evolution. We show that this effect can be demonstrated in very simple toy computer simulations of evolution in an entropy increasing or decreasing
Torsten Heinrich, Benjamin Knopp, Heinrich Päs   +2 more
openalex   +5 more sources