Tunneling-time asymmetry in resonant quantum structures

1996 ◽  
Vol 32 (7) ◽  
pp. 1150-1154 ◽  
Author(s):  
D. Dragoman ◽  
M. Dragoman
Keyword(s):  
Quantum Structures ◽  
Tunneling Time ◽  
Time Asymmetry

Tunneling-time properties in type II quantum resonant structures

1996 ◽  
Vol 32 (11) ◽  
pp. 1932-1936 ◽  
Author(s):  
D. Dragoman ◽  
M. Dragoman
Keyword(s):  
Tunneling Time ◽  
Type Ii ◽  
Resonant Structures

scholarly journals Hunting for Gravitational Quantum Spikes

Universe ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 49
Author(s):  
Andrzej Góźdź ◽  
Włodzimierz Piechocki ◽  
Grzegorz Plewa ◽  
Tomasz Trześniewski
Keyword(s):  
Initial Data ◽  
Fundamental Importance ◽  
Quantum Structures ◽  
Subtle Effect ◽  
Gravitational Systems ◽  
Numerical Tools ◽  
The Universe

We present the result of our examination of quantum structures called quantum spikes. The classical spikes that are known in gravitational systems, occur in the evolution of the inhomogeneous spacetimes. A different kind of spikes, which we name strange spikes, can be seen in the dynamics of the homogeneous sector of the Belinski–Khalatnikov–Lifshitz scenario. They can be made visible if the so-called inhomogeneous initial data are used. The question to be explored is whether the strange spikes may survive quantization. The answer is in the affirmative. However, this is rather a subtle effect that needs further examination using sophisticated analytical and numerical tools. The spikes seem to be of fundamental importance, both at classical and quantum levels, as they may serve as seeds of real structures in the universe.

scholarly journals Residuated Structures and Orthomodular Lattices

Studia Logica ◽  
2021 ◽  
Author(s):  
D. Fazio ◽  
A. Ledda ◽  
F. Paoli
Keyword(s):  
Algebraic Logic ◽  
Residuated Lattices ◽  
Quantum Structures ◽  
Heyting Algebras ◽  
Quantum Algebras ◽  
Orthomodular Lattices ◽  
Lattice Of Subvarieties ◽  
Residuated Structures ◽  
Common Framework ◽  
Mv Algebras

AbstractThe variety of (pointed) residuated lattices includes a vast proportion of the classes of algebras that are relevant for algebraic logic, e.g., $$\ell $$ ℓ -groups, Heyting algebras, MV-algebras, or De Morgan monoids. Among the outliers, one counts orthomodular lattices and other varieties of quantum algebras. We suggest a common framework—pointed left-residuated $$\ell $$ ℓ -groupoids—where residuated structures and quantum structures can all be accommodated. We investigate the lattice of subvarieties of pointed left-residuated $$\ell $$ ℓ -groupoids, their ideals, and develop a theory of left nuclei. Finally, we extend some parts of the theory of join-completions of residuated $$\ell $$ ℓ -groupoids to the left-residuated case, giving a new proof of MacLaren’s theorem for orthomodular lattices.

GaN-based pyramidal quantum structures for micro-size light-emitting diode applications

2021 ◽  
Vol 118 (14) ◽  
pp. 142102
Author(s):  
Son Phuong Le ◽  
Chih-Wei Hsu ◽  
Ivan Martinovic ◽  
Per-Olof Holtz
Keyword(s):  
Light Emitting Diode ◽  
Quantum Structures ◽  
Light Emitting

scholarly journals Faraday and Kerr Effects in Right and Left-Handed Films and Layered Materials

2020 ◽  
Vol 59 (1) ◽  
pp. 243-251
Author(s):  
Josh Lofy ◽  
Vladimir Gasparian ◽  
Zhyrair Gevorkian ◽  
Esther Jódar
Keyword(s):  
Kerr Effect ◽  
Tunneling Time ◽  
The Real ◽  
Left Handed ◽  
Faraday Rotation Angle ◽  
Time Problem ◽  
Kerr Angle ◽  
Polarization Of Light ◽  
Effect Of Light ◽  
Forbidden Gap

AbstractIn the present work, we study the rotations of the polarization of light propagating in right and left-handed films and layered structures. Through the use of complex values representing the rotations we analyze the transmission (Faraday effect) and reflections (Kerr effect) of light. It is shown that the real and imaginary parts of the complex angle of Faraday and Kerr rotations are odd and even functions for the refractive index n, respectively. In the thin film case with left-handed materials there are large resonant enhancements of the reflected Kerr angle that could be obtained experimentally. In the magnetic clock approach, used in the tunneling time problem, two characteristic time components are related to the real and imaginary portions of the complex Faraday rotation angle . The complex angle at the different propagation regimes through a finite stack of alternating right and left-handed materials is analyzed in detail. We found that, in spite of the fact that Re(θ) in the forbidden gap is almost zero, the Im(θ) changes drastically in both value and sign.

Numerical investigation into the time-asymmetry effect on a plunging foil

2021 ◽  
Vol 225 ◽  
pp. 108833
Author(s):  
Xiao Chen ◽  
Qiaogao Huang ◽  
Guang Pan ◽  
Yao Shi
Keyword(s):  
Numerical Investigation ◽  
Time Asymmetry ◽  
Asymmetry Effect
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