Results 81 to 90 of about 70,673 (206)

Quantifying the potential and flux landscapes for nonequilibrium multiverse, a new scenario for time arrow

open access: yesJournal of High Energy Physics, 2021
We propose a new scenario of nonequilibirum multiverse. We quantified the potential landscape and the flux landscape for the multiverse. The potential landscape quantifies the weight of each universe. When the terminal vacuum with zero (flat) or negative
Hong Wang, Xinyu Li, Jin Wang
doaj   +1 more source

The Generalized Second Law implies a Quantum Singularity Theorem

open access: yes, 2016
The generalized second law can be used to prove a singularity theorem, by generalizing the notion of a trapped surface to quantum situations. Like Penrose's original singularity theorem, it implies that spacetime is null geodesically incomplete inside ...
Alcubierre M   +39 more
core   +1 more source

Decoherence, Chaos, and the Second Law

open access: yes, 1994
We investigate implications of decoherence for quantum systems which are classically chaotic. We show that, in open systems, the rate of von Neumann entropy production quickly reaches an asymptotic value which is: (i) independent of the system ...
A. O. Caldeira   +25 more
core   +2 more sources

Die Pfeile der geschichtlichen Zeit

open access: yesÖsterreichische Zeitschrift für Geschichtswissenschaften, 2002
So far, the domains of thermodynamics, evolution and historiography have rarely found a common, coherent platform. Following a recent wave of literature on the parallelism between cosmic and evolutionary history, the present article follows two basic ...
Karl H. Müller
doaj   +1 more source

Heat flow reversals without reversing the arrow of time: The role of internal quantum coherences and correlations

open access: yesPhysical Review Research, 2019
One of the stunning consequences of quantum correlations in thermodynamics is the reversal of the arrow of time, recently shown experimentally in Micadei et al. [Nat. Commun.
C. L. Latune   +2 more
doaj   +1 more source

On the nature of cosmological time [PDF]

open access: yes, 2015
Time is a parameter playing a central role in our most fundamental modeling of natural laws. Relativity theory shows that the comparison of times measured by different clocks depends on their relative motions and on the strength of the gravitational ...
Hauret, Clémentine, Magain, Pierre
core  

Small and Simple Systems That Favor the Arrow of Time

open access: yesEntropy
The 2nd law of thermodynamics yields an irreversible increase in entropy until thermal equilibrium is achieved. This irreversible increase is often assumed to require large and complex systems to emerge from the reversible microscopic laws of physics. We
Ralph V. Chamberlin
doaj   +1 more source

The role of quantum measurement in stochastic thermodynamics

open access: yesnpj Quantum Information, 2017
Rebuilding quantum thermodynamics on quantum measurement Measuring a quantum system is an ultimately random operation. It induces a genuinely quantum time arrow, increasing the system’s entropy. But because it perturbs its state, quantum measurement also
Cyril Elouard   +3 more
doaj   +1 more source

Memory Systems, the Epistemic Arrow of Time, and the Second Law

open access: yesEntropy
The epistemic arrow of time is the fact that our knowledge of the past seems to be both of a different kind and more detailed than our knowledge of the future. Just like with the other arrows of time, it has often been speculated that the epistemic arrow
David H. Wolpert, Jens Kipper
doaj   +1 more source

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