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Entropy, Volume 25, Issue 1

January 2023 - 179 articles

Cover Story: A molecular electronic wavefunction prepared at a highly excited adiabatic state embedded in a densely quasi-degenerate manifold quickly begins to undergo continual nonadiabatic mixing with other states, each of which in turn further mixes with other states. The mixing is caused by the so-called nonadiabatic interactions due to a significant breakdown of the Born–Oppenheimer approximations. The resultant electronic wavepacket penetrates into the broader domain in the Hilbert space, and thus, the dynamics looks like a fractional Brownian motion. A monotonically increasing Shannon entropy and other indicators highlight the presence of quantum chaos in the electronic state of molecules. This intensive chaos brings about peculiar characteristics in the dynamics of molecules. View this paper
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Articles (179)

  • Article
  • Open Access
10 Citations
2,980 Views
16 Pages

14 January 2023

Multimodal image fusion aims to retain valid information from different modalities, remove redundant information to highlight critical targets, and maintain rich texture details in the fused image. However, current image fusion networks only use simp...

  • Article
  • Open Access
3 Citations
3,097 Views
14 Pages

13 January 2023

The Theory of the Adjacent Possible (TAP) equation has been proposed as an appropriate description of super-exponential growth phenomena, where a phase of slow growth is followed by a rapid increase, leading to a “hockey stick” curve. Thi...

  • Article
  • Open Access
1 Citations
2,496 Views
15 Pages

Image Registration for Visualizing Magnetic Flux Leakage Testing under Different Orientations of Magnetization

  • Shengping Li,
  • Jie Zhang,
  • Gaofei Liu,
  • Nanhui Chen,
  • Lulu Tian,
  • Libing Bai and
  • Cong Chen

13 January 2023

The Magnetic Flux Leakage (MFL) visualization technique is widely used in the surface defect inspection of ferromagnetic materials. However, the information of the images detected through the MFL method is incomplete when the defect (especially for t...

  • Article
  • Open Access
21 Citations
5,291 Views
25 Pages

A Pseudorandom Number Generator Based on the Chaotic Map and Quantum Random Walks

  • Wenbo Zhao,
  • Zhenhai Chang,
  • Caochuan Ma and
  • Zhuozhuo Shen

13 January 2023

In this paper, a surjective mapping that satisfies the Li–Yorke chaos in the unit area is constructed and a perturbation algorithm (disturbing its parameters and inputs through another high-dimensional chaos) is proposed to enhance the randomne...

  • Article
  • Open Access
4 Citations
2,795 Views
35 Pages

13 January 2023

In this manuscript, off-set strip fin structures are presented which are adapted to the possibilities of additive manufacturing. For this purpose, the geometric parameters, including fin height, fin spacing, fin length, and fin longitudinal displacem...

  • Article
  • Open Access
2 Citations
3,285 Views
16 Pages

13 January 2023

We establish a fluctuation theorem for an open quantum bipartite system that explicitly manifests the role played by quantum correlation. Generally quantum correlations may substantially modify the universality of classical thermodynamic relations in...

  • Article
  • Open Access
6 Citations
4,338 Views
12 Pages

13 January 2023

The second-order Kuramoto equation describes the synchronization of coupled oscillators with inertia, which occur, for example, in power grids. On the contrary to the first-order Kuramoto equation, its synchronization transition behavior is significa...

  • Article
  • Open Access
3 Citations
2,221 Views
11 Pages

Entropy, Graph Homomorphisms, and Dissociation Sets

  • Ziyuan Wang,
  • Jianhua Tu and
  • Rongling Lang

13 January 2023

Given two graphs G and H, the mapping of f:V(G)→V(H) is called a graph homomorphism from G to H if it maps the adjacent vertices of G to the adjacent vertices of H. For the graph G, a subset of vertices is called a dissociation set of G if it in...

  • Article
  • Open Access
1 Citations
2,370 Views
12 Pages

13 January 2023

Assuming that there is no way of sending signals propagating faster than light and that free will exists, the loophole-free observed violation of Bell’s inequalities demonstrates that at least one of three fundamental hypotheses involved in the...

  • Article
  • Open Access
1 Citations
2,131 Views
12 Pages

13 January 2023

Weak scattering in a random disordered medium and the associated extreme-event statistics are of great interest in various physical contexts. Here, in the context of non-relativistic particle motion through a weakly correlated random potential, we sh...

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Entropy - ISSN 1099-4300