Results 31 to 40 of about 1,533,087 (281)
Relating the thermodynamic arrow of time to the causal arrow
, 2007 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.
Armen E Allahverdyan +30 more
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Pre-bangian origin of our entropy and time arrow [PDF]
, 1999 I argue that, in the chaotic version of string cosmology proposed recently, classical and quantum effects generate, at the time of exit to radiation, the correct amount of entropy to saturate a Hubble (or holography) entropy bound (HEB) and to identify ...
Veneziano, G.
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Fundamentality and Time’s Arrow [PDF]
Philosophy of Science, 2018 The distribution of matter in our universe is strikingly time asymmetric. Most famously, the Second Law of Thermodynamics says that entropy tends to increase toward the future but not toward the past. But what explains this time-asymmetric distribution of matter?
openaire +3 more sources
Life, 2021 An efficient and effective multiple headspace-solid phase microextraction-arrow-gas chromatography-mass spectrometry (MHS-SPME-arrow-GCMS) analytical protocol is established and used to quantify the flavor compounds in oils.
Ziyan Xu +5 more
doaj +1 more source
Quantum Cosmology and the Arrow of Time
, 2005 Although most fundamental laws are invariant under time reversal, experience exhibits the presence of irreversible phenomena -- the arrows of time. Their origin lies in cosmology, and I argue that only quantum cosmology can provide the appropriate formal
Kiefer, Claus
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, 1993 It is argued that the observed Thermodynamic Arrow of Time must arise from the boundary conditions of the universe. We analyse the consequences of the no boundary proposal, the only reasonably complete set of boundary conditions that has been put forward.
D. N. Page +25 more
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Bluff your way in the second law of thermodynamics [PDF]
, 2001 The aim of this article is to analyze the relation between the second law of thermodynamics and the so-called arrow of time. For this purpose, a number of different aspects in this arrow of time are distinguished, in particular those of time-(a)symmetry ...
Uffink, Jos
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Вестник Мининского университета, 2018 Introduction: the purpose of this article is to highlight the main difficulties and paradoxes, which connected with the time reversibility and also to research their solutions in the context of philosophy and natural science.
E. V. Smirnova, D. V. Vorobiov
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Feedback Control and the Arrow of Time
, 2008 The purpose of this paper is to highlight the central role that the time asymmetry of stability plays in feedback control. We show that this provides a new perspective on the use of doubly-infinite or semi-infinite time axes for signal spaces in control ...
Georgiou, Tryphon T., Smith, Malcolm C.
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Time's ArrowOur cards model shows two world-views, but as far as we look at the sequence constructed, we can't see them. By making a ring with any sequence constructed in a cards model, we can represent two different time series in terms of two opposite directions of the ring rotation. Using this device, we can restate the thermodynamic discussions.
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