Arrow of time - Wikipedia
The arrow of time is the "one-way direction" or "asymmetry" of time. The thermodynamic arrow of time is provided by the second law of thermodynamics, which says that in an isolated system, entropy tends to increase with time. Entropy can be thought of as a measure of microscopic disorder; thus the second law implies that time is asymmetrical ...
Entropy as an arrow of time - Wikipedia
Entropy is one of the few quantities in the physical sciences that require a particular direction for time, sometimes called an arrow of time. As one goes "forward" in time, the second law of thermodynamics says, the entropy of an isolated system can increase, but not decrease.
Machine learning the thermodynamic arrow of time - Nature
2020年9月21日 · We show that a machine can learn to guess accurately the direction of time’s arrow from microscopic data, and (more importantly) that it does so by effectively discovering the underlying...
[1909.12380] Machine learning the thermodynamic arrow of time …
2019年9月26日 · Here, we show that a machine learning algorithm can learn to discern the direction of time's arrow when provided with a system's microscopic trajectory as input. The performance of our algorithm matches fundamental bounds …
Thermodynamic Asymmetry in Time - Stanford Encyclopedia of Philosophy
2001年11月15日 · Despite its familiarity, however, the thermodynamic arrow of time raises many deep questions relevant to both philosophy and the foundations of physics. This entry concentrates on two of them. In contemporary parlance, they are each questions about grounding.
Entanglement and the thermodynamic arrow of time - Physical …
2010年6月23日 · Extending work by Partovi, we consider a general entangled multipartite system that allows large reversals of the thermodynamic arrow of time. We describe a hierarchy of arrows that arises from the different correlations allowed in a quantum state and examine these features in the context of Maxwell's Demon.
The Thermodynamic Arrow-of-time and Quantum Mechanics
2011年2月10日 · I give an explanation of the thermodynamic arrow-of-time (namely entropy increases with time) within a quantum mechanical framework. This entails giving a solution to the Loschmidt paradox, i.e. showing how an irreversible macro-dynamics can arise from a reversible micro-dynamics.
Structure of the thermodynamic arrow of time in classical and …
2017年5月10日 · In this work we analyze the structure of the thermodynamic arrow of time, defined by transformations that leave the thermal equilibrium state unchanged, in classical (incoherent) and quantum (coherent) regimes. We note that in the infinite-temperature limit, the thermodynamic ordering of states in both regimes exhibits a lattice structure.
Time's Arrow in Thermodynamics | Entropy, Flow & Equilibrium
2024年5月27日 · This introduction to Time’s Arrow in thermodynamics highlights the inextricable link between entropy, its flow, and equilibrium. Understanding this concept is crucial for grasping the irreversible nature of time and the fundamental …
2017年5月10日 · In this work we analyse the structure of the thermodynamic arrow of time, de ned by transfor- mations that leave the thermal equilibrium state unchanged, in classical (incoherent) and quantum (coherent) regimes.