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133 KiB

Open AccessArticle

Two-way thermodynamics: Could it really happen?

by L. S. Schulman

Entropy 2005, 7(4), 208-220; https://doi.org/10.3390/e7040208 - 06 Oct 2005

Cited by 6 | Viewed by 6390

In previous publications I have suggested that opposite thermodynamic arrows of time could coexist in our universe. This letter responds to the comments of H. D. Zeh (previous letter in this journal). Full article

(This article belongs to the Special Issue Recent Advances in Entanglement and Quantum Information Theory)

224 KiB

Open AccessArticle

Information Seen as Part of the Development of Living Intelligence: the Five-Leveled Cybersemiotic Framework for FIS

by Soren Brier

Entropy 2003, 5(2), 88-99; https://doi.org/10.3390/e5020088 - 30 Jun 2003

Cited by 10 | Viewed by 5976

Abstract

It is argued that a true transdisciplinary information science going from physical information to phenomenological understanding needs a metaphysical framework. Three different kinds of causality are implied: efficient, formal and final. And at least five different levels of existence are needed: 1. The [...] Read more.

It is argued that a true transdisciplinary information science going from physical information to phenomenological understanding needs a metaphysical framework. Three different kinds of causality are implied: efficient, formal and final. And at least five different levels of existence are needed: 1. The quantum vacuum fields with entangled causation. 2. The physical level with is energy and force-based efficient causation. 3. The informational-chemical level with its formal causation based on pattern fitting. 4. The biological-semiotic level with its non-conscious final causation and 5. The social-linguistic level of self-consciousness with its conscious goal-oriented final causation. To integrate these consistently in an evolutionary theory as emergent levels, neither mechanical determinism nor complexity theory are sufficient because they cannot be a foundation for a theory of lived meaning. C. S. Peirce's triadic semiotic philosophy combined with a cybernetic and systemic view, like N. Luhmann's, could create the framework I call Cybersemiotics. Full article

(This article belongs to the Special Issue Recent Advances in Entanglement and Quantum Information Theory)

185 KiB

Open AccessArticle

Entropy of Black Holes: A Quantum Algebraic Approach

by A. Iorio, G. Lambiase and G. Vitiello

Entropy 2002, 4(6), 168-182; https://doi.org/10.3390/e4060168 - 03 Feb 2003

Cited by 1 | Viewed by 6742

Abstract

In this paper we apply to a class of static and time-independent geometries the recently developed formalism of deformed algebras of quantum fields in curved backgrounds. In particular we derive: i) some non-trivial features of the entanglement of the quantum vacuum, such as [...] Read more.

In this paper we apply to a class of static and time-independent geometries the recently developed formalism of deformed algebras of quantum fields in curved backgrounds. In particular we derive: i) some non-trivial features of the entanglement of the quantum vacuum, such as the robustness against interaction with the environment; ii) the thermal properties and the entropy of black holes for space-times with a unique event horizon, such as Schwarzschild, de Sitter and Rindler space-times. Full article

(This article belongs to the Special Issue Recent Advances in Entanglement and Quantum Information Theory)

154 KiB

Open AccessArticle

An Elementary Derivation of The Black Hole Entropy in Any Dimension

by Carlos Castro

Entropy 2001, 3(1), 12-26; https://doi.org/10.3390/e3010012 - 26 Mar 2001

Cited by 8 | Viewed by 7534

Abstract

An elementary derivation of the Black Hole Entropy area relation in any dimension is provided based on the New Extended Scale Relativity Principle and Shannon's Information Entropy. The well known entropy-area linear Bekenstein-Hawking relation is derived. We discuss briefly how to derive the [...] Read more.

An elementary derivation of the Black Hole Entropy area relation in any dimension is provided based on the New Extended Scale Relativity Principle and Shannon's Information Entropy. The well known entropy-area linear Bekenstein-Hawking relation is derived. We discuss briefly how to derive the most recently obtained Logarithmic and higher order corrections to the linear entropy-area law in full agreement with the standard results in the literature. Full article

(This article belongs to the Special Issue Recent Advances in Entanglement and Quantum Information Theory)

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173 KiB

Open AccessLetter

Remarks on the Compatibility of Opposite Arrows of Time

by H. D. Zeh

Entropy 2005, 7(4), 199-207; https://doi.org/10.3390/e7040199 - 23 Sep 2005

Cited by 10 | Viewed by 6426

Abstract

I argue that opposite arrows of time, while being logically possible, cannot realistically be assumed to exist during one and the same epoch of our universe. Full article

(This article belongs to the Special Issue Recent Advances in Entanglement and Quantum Information Theory)

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