Showing posts with label entropy production. Show all posts
Showing posts with label entropy production. Show all posts

Saturday, 28 March 2026

Active Phase Stabilisation in a Plasma Resonator Using Feedback Control and Auxiliary Scalar-like Coupling | Chapter 6 | New Horizons of Science, Technology and Culture Vol. 9

 

Maintaining coherence in resonant plasma and hybrid quantum systems remains a central challenge due to phase drift, environmental coupling, and entropy production. In this work, we investigate an active coherence locking framework for a plasma-based resonator using feedback-mediated phase control, auxiliary scalar field coupling, and entropy-aware regulation. The present study focuses explicitly on classical phase coherence, defined here as sustained phase synchronisation between coupled oscillatory degrees of freedom, while treating quantum coherence as a long-term target rather than a demonstrated property of the modelled system.

 

A phenomenological scalar field is introduced as an auxiliary control channel that mediates phase alignment between resonant plasma modes, while entropy flow is monitored and regulated to suppress destabilising fluctuations. Using time-resolved numerical simulations, we demonstrate that active feedback can rapidly drive the system into a stable phase-locked regime and maintain coherence within defined operational bounds. A critical instability threshold (“tearing threshold”) is identified, beyond which feedback control fails, and coherence degrades.

 

While the underlying plasma dynamics are treated in a classical or semiclassical regime, the control architecture is motivated by concepts from quantum feedback and coherence preservation. The results establish a classical coherence-stabilisation platform that may serve as a precursor to experimentally testable strategies for coherence preservation in more explicitly quantum systems. This work, therefore, provides a controlled bridge between classical resonant stabilisation and future quantum-coherent implementations.

 

 

Author(s) Details

Derrick Covington
Department of Veterans Affairs, United States.

 

Please see the book here :- https://doi.org/10.9734/bpi/nhstc/v9/6896

Friday, 23 June 2023

Power Output and Substrate Utilization in Skeletal Muscle: The Thermodynamics of Demand and Delivery Pathways | Chapter 2 | Cutting Edge Research in Biology Vol. 8

 A solid aim of this study search out show how substrate utilization depends on capacity output. Metabolic responses of demand and delivery in wasted muscle are simulated. These are the pathways of connected adenosine triphosphate (ATP) consumption of the sarcosol (demand), and those of organic compound composed of carbon and/or glycogen and of palmitic acid decay (delivery). From respective ATP composition rates, substrate utilization of specific pathways can be planned. Results are obtained from three types of muscle fibers, that differ in their mitochondrial content. Substrate exercise is shifted from palmitic acid at depressed and medium power outputs towards glucose/complex carbohydrate at higher power outputs. This is created by an increase of the conductance of the glycolytic road through adenosine monophosphate (AMP) activation of phosphofructokinase, while on the contrary, the conveyance of the fatty acid road remains unaltered. The flux through this latter road can be greatly increased only by an increase of allure conductance for membrane transport. Interferences to a degree uncoupling of oxidative phosphorylation, or a change from isotonic to isometric shortenings must be followed by an change of substrate utilization, cause power output and the aggregation of AMP are changed together. The entire motion of both substrates through demand and delivery backlashes can be planned by one alone equation. Coupling between these parts of minimum energy requirement is achieved by ATP controlling a vehicle through ATP forming and ATP dividing reactions. A negative entropy result can occur only accompanying coupled responses, when the negative output affinity vanish through by a flux. But this process is in addition compensated for apiece positive input closeness. From this it can be decided that the Second Law of thermodynamics, ∆ I S ≥0, always debris fulfilled, even in the presence of negative deterioration production.

Author(s) Details:

Frank Diederichs,
Marschweg 10, D-29690 Schwarmstedt, Germany. 



Please see the link here: https://stm.bookpi.org/CERB-V8/article/view/10924

Sunday, 15 August 2021

Chemical Potentials and Heat Production in the Course of Chemical Reactions | Chapter 4 | Current Advances in Chemistry and Biochemistry Vol. 10

One of the main goals of this research is to demonstrate how chemical and biological reactions occur. These phenomenological events are first in the foreground since a substantial percentage of the energy transformations occurring via a reaction is always tied to changes in potential differences. Entropic changes, in addition to energetic changes, are also significant. The distinction between traded and produced entropy is highlighted in this section. In comparison to conversions of mechanical or electrical energy, the conversion of energy in chemical reactions into heat energy has a unique position because no forces are involved. The process can be described in a simplified way by using transport reactions through channels. It is demonstrated that heat is generated by energetic transition states, and that the generated heat causes a large rise in multiplicity. As a result, the reaction process is permitted to proceed. The conclusion is that, rather than a force, multiplicity dictates the direction and course of chemical and biological reactions.


Author (S) Details

Frank Diederichs
Marschweg 10, D 29690 Schwarmstedt, Germany.

View Book :- https://stm.bookpi.org/CACB-V10/article/view/2624

Thursday, 27 August 2020

A Global Perspective: Entropy Principle for the Evolution of Living Systems and the Universe------From Bacteria to the Universe--| Chapter 4 | Recent Advances in Science and Technology Research Vol.5

 

Since the old time of Boltzmann, relationships between entropy and life have been argued until
recently and may be in future. The life span of individual organisms, successional developments of
ecological systems, and the evolution of living systems are shown to be expressed by “Max-Min
Entropy Production Principle” (MMEP)”: entropy production increases with time in the early stage
(birth-growth), and decreases with time in later stage (senescence-death). Thus, Entropy Principle for
the time course of the biological evolution is completely established: the “Biological Thermodynamics”
is completed in this article. Entropy in the universe increases from Big Bang to recently, and
“Maximum Entropy Principle” holds, when proton decay and black hole evaporation are observed, but
not yet now. The validity of the assertion of Clausius: “The entropy tends to a maximum”, and the
validity of the Second Law of Thermodynamics in the universe have not been established until quite
recently (2017); they depend on the observations of proton decay and evaporation of black hole, and
are left for future studies. In the case that protons do not decay and black holes do not evaporate, the
Second Law of Thermodynamics cannot also be proved to be correct in the universe.

Author(s) Details

Ichiro Aoki
Department of Systems Engineering, Faculty of Engineering, Shizuoka University, Hamamatsu City, 432-8561, Japan.

View Book :-
https://bp.bookpi.org/index.php/bpi/catalog/book/241