Relevant bibliographies by topics / Entropy of Von Neuman. eng

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Academic literature on the topic 'Entropy of Von Neuman. eng'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "Entropy of Von Neuman. eng"

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Bishop, R. C., A. Bohm, and M. Gadella. "Irreversibility in quantum mechanics." Discrete Dynamics in Nature and Society 2004, no. 1 (2004): 75–83. http://dx.doi.org/10.1155/s1026022604401046.

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Time asymmetry and irreversibility are signal features of our world. They are the reason of our aging and the basis for our belief that effects are preceded by causes. These features have many manifestations called arrows of time. In classical physics, some of these arrows are described by the increase of entropy or probability, and others by time-asymmetric boundary conditions of time-symmetric equations (e.g., Maxwell or Einstein). However, there is some controversy over whether probability or boundary conditions are more fundamental. For quantum systems, entropy increase is usually associat
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Popovic, Marko. "Research in entropy wonterland: A review of the entropy concept." Thermal Science 22, no. 2 (2018): 1163–78. http://dx.doi.org/10.2298/tsci180115012p.

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The entropy concept was introduced in the mid-nineteenth century by Clausius and has been continually enriched, developed, and interpreted by researchers in many scientific disciplines. The use of entropy in a wide range of fields has led to inconsistencies in its application and interpretation, as summarized by von Neuman ?No one knows what entropy really is.? To resolve this problem, thermodynamics and other scientific disciplines face several crucial questions concerning the entropy concept: (1) What is the physical meaning of entropy? (2) Is entropy a subjective or an objective property? (
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Rahe, M. "On Finite Coding Factors of a Class of Random Markov Chains." Canadian Mathematical Bulletin 37, no. 3 (1994): 399–407. http://dx.doi.org/10.4153/cmb-1994-058-2.

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AbstractFor k-step Markov chains, factors generated by finite length codes split off with Bernoulli complement when maximal in entropy. Those not maximal are relatively finite in another factor which generates or splits off.These results extend to random Markov chains with finite expected step size, implying that random Markov chains with finite expected step size can have only finitely many ergodic components, each of which is isomorphic to a finite rotation, a Bernoulli shift, or a direct product of a Bernoulli shift with a finite rotation. This result limits the type of zero entropy factors
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Khan, Najeeb Alam, Farah Naz, and Faqiha Sultan. "Entropy generation analysis and effects of slip conditions on micropolar fluid flow due to a rotating disk." Open Engineering 7, no. 1 (2017): 185–98. http://dx.doi.org/10.1515/eng-2017-0025.

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AbstractThis article deals with the investigation of three-dimensional axisymmetric steady flow of micropolar fluid over a rotating disk in a slip-flow regime. Further, the generation of entropy due to heat transfer and fluid friction is identified. It is noticed that the entropy generation can be decreased and controlled in the presence of slip. The anisotropic slip has vital characteristics and it has a great influence on the flow field and heat transfer. The von Kármán similarity transformation is used to establish the equations governing the flow and heat transfer characteristics of the fl
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Seenithurai, Sonai, and Jeng-Da Chai. "Electronic Properties of Carbon Nanobelts Predicted by Thermally-Assisted-Occupation DFT." Nanomaterials 11, no. 9 (2021): 2224. http://dx.doi.org/10.3390/nano11092224.

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Accurate prediction of properties of large-scale multi-reference (MR) electronic systems remains difficult for traditional computational methods (e.g., the Hartree–Fock theory and Kohn–Sham density functional theory (DFT)). Recently, thermally-assisted-occupation (TAO)-DFT has been demonstrated to offer reliable description of electronic properties of various large-scale MR electronic systems. Consequently, in this work, TAO-DFT is used to unlock the electronic properties associated with C-Belt[n] (i.e., the carbon nanobelts containing n fused 12-membered carbon rings). Our calculations show t
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Tsallis, Constantino. "Beyond Boltzmann–Gibbs–Shannon in Physics and Elsewhere." Entropy 21, no. 7 (2019): 696. http://dx.doi.org/10.3390/e21070696.

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The pillars of contemporary theoretical physics are classical mechanics, Maxwell electromagnetism, relativity, quantum mechanics, and Boltzmann–Gibbs (BG) statistical mechanics –including its connection with thermodynamics. The BG theory describes amazingly well the thermal equilibrium of a plethora of so-called simple systems. However, BG statistical mechanics and its basic additive entropy S B G started, in recent decades, to exhibit failures or inadequacies in an increasing number of complex systems. The emergence of such intriguing features became apparent in quantum systems as well, such
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KHALIL, E. M., M. M. A. AHMED та A. S. F. OBADA. "ENTANGLEMENT OF A TWO-LEVEL ATOM INTERACTING WITH A NEW STRUCTURE OF A GENERALIZED NONLINEAR STARK SHIFT VIA Ξ CONFIGURATION". International Journal of Modern Physics B 25, № 19 (2011): 2621–36. http://dx.doi.org/10.1142/s0217979211100898.

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The problem of a two-level atom interacting with single mode cavity field is considered, however, the optical cavity is filled with new structure of a generalized nonlinear Stark shift via Ξ configuration. One starts with a three-level trapped atom interacting with the quantized field of center of mass motion thus a Hamiltonian for one-phonon process with nonlinearities is derived. Through the elimination of the intermediate level by using the adiabatic elimination method, we generate a new structure of effective Hamiltonian for a two-level atom with a nonlinear Stark shift. The temporal evolu
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RENNER, RENATO. "SECURITY OF QUANTUM KEY DISTRIBUTION." International Journal of Quantum Information 06, no. 01 (2008): 1–127. http://dx.doi.org/10.1142/s0219749908003256.

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Quantum Information Theory is an area of physics which studies both fundamental and applied issues in quantum mechanics from an information-theoretical viewpoint. The underlying techniques are, however, often restricted to the analysis of systems which satisfy a certain independence condition. For example, it is assumed that an experiment can be repeated independently many times or that a large physical system consists of many virtually independent parts. Unfortunately, such assumptions are not always justified. This is particularly the case for practical applications — e.g. in quantum cryptog
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Lukyanova, Victoria O., and Irina Yu Gots. "Estimation of Diffusion-Kinetic and Thermodynamic Properties of Al‑Sm-H Alloys." Kondensirovannye sredy i mezhfaznye granitsy = Condensed Matter and Interphases 22, no. 4 (2020): 481–88. http://dx.doi.org/10.17308/kcmf.2020.22/3118.

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Metal hydride systems for hydrogen storage are now commercially manufactured and the demand for them is constantly growing. Metal hydrides have the following features: a unique combination of properties of metal-hydrogen systems; extremely high volumetric densities of hydrogen atoms in the metal matrix; a wide range of operating pressures and temperatures; the selectivity of the hydrogen absorption process; significant changes in the physical properties of the metal when it is saturated with hydrogen; their catalytic activity, etc. The purpose of our research was to study the effect of the tem
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Fogarty, Thomas, Lewis Ruks, Jing Li, and Thomas Busch. "Fast control of interactions in an ultracold two atom system: Managing correlations and irreversibility." SciPost Physics 6, no. 2 (2019). http://dx.doi.org/10.21468/scipostphys.6.2.021.

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We design and explore a shortcut to adiabaticity (STA) for changing the interaction strength between two ultracold, harmonically trapped bosons. Starting from initially uncorrelated, non-interacting particles, we assume a time-dependent tuning of the inter-particle interaction through a Feshbach resonance, such that the two particles are strongly interacting at the end of the driving. The efficiency of the STA is then quantified by examining the thermodynamic properties of the system, such as the irreversible work, which is related to the out-of-equilibrium excitations in the system. We also q
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Dissertations / Theses on the topic "Entropy of Von Neuman. eng"

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Brandão, Camila. "Ensaios sobre computação e informação quânticas : fundamentação e simulações sobre o efeito da entropia /." São José do Rio Preto : [s.n.], 2010. http://hdl.handle.net/11449/89353.

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Orientador: Manoel Ferreira Borges Neto<br>Banca: Waldir Leite Roque<br>Banca: José Márcio Machado<br>Resumo: Nesta dissertação, além da apresentação de um ensaio teórico sobre a fundamentação da Mecânica Quântica, Computação, Informação Quântica, Criptografia e Entropias Quânticas, serão mostradas, de forma inédita, algumas implementações sobre o efeito da Entropia no Emaranhamento Quântico, importante para processos de transmissão da Informação Quântica, com o uso dos programas Mathematica e Matlab. Primeiramente e apresentado um breve histórico sobre a Computação Quântica e a Informação Quâ
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Brandão, Camila [UNESP]. "Ensaios sobre computação e informação quânticas: fundamentação e simulações sobre o efeito da entropia." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/89353.

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Made available in DSpace on 2014-06-11T19:24:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-04-30Bitstream added on 2014-06-13T18:51:25Z : No. of bitstreams: 1 brandao_c_me_sjrp.pdf: 2464888 bytes, checksum: 22ba55e346e2ad76af2e1695d3998ff4 (MD5)<br>Nesta dissertação, além da apresentação de um ensaio teórico sobre a fundamentação da Mecânica Quântica, Computação, Informação Quântica, Criptografia e Entropias Quânticas, serão mostradas, de forma inédita, algumas implementações sobre o efeito da Entropia no Emaranhamento Quântico, importante para processos de transmissão da Informa
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Conference papers on the topic "Entropy of Von Neuman. eng"

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Cano-Andrade, Sergio, Michael R. von Spakovsky, and Gian Paolo Beretta. "Steepest-Entropy-Ascent Quantum Thermodynamic Non-Equilibrium Modeling of Decoherence of a Composite System of Two Interacting Spin-½ Systems." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-63596.

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The equation of motion of steepest-entropy-ascent quantum thermodynamics (SEA-QT) was first postulated in the early 1980s with the intent of modeling the non-linear dynamic behavior encountered in nature, which the unitary (linear) dynamics of the Schrödinger-von Neumann equation cannot. The SEA-QT equation is used here to model the decoherence phenomenon between two distinguishable and indivisible elementary constituents of type spin–½ (e.g., quantum bits or qubits). The resulting set of non-linear, first-order differential equations is solved with a fourth-order-Runge-Kutta routine provided
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