scholarly journals A Moiré pattern on symmetric spaces of the noncompact type

2018 ◽  
Vol 146 (9) ◽  
pp. 3747-3758
Author(s):  
Alexandre Afgoustidis
Keyword(s):  
Symmetric Spaces ◽  
Noncompact Type ◽  
Moire Pattern ◽  
Moiré Pattern

scholarly journals Moiré pattern of interference dislocations in condensate of indirect excitons

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
J. R. Leonard ◽  
Lunhui Hu ◽  
A. A. High ◽  
A. T. Hammack ◽  
Congjun Wu ◽  
...  
Keyword(s):  
Long Range ◽  
Direct Measurement ◽  
Quantum Systems ◽  
Matter Waves ◽  
Moire Pattern ◽  
Indirect Excitons ◽  
Moiré Pattern ◽  
Moiré Effect ◽  
Phase Singularities ◽  
Bose Einstein

AbstractInterference patterns provide direct measurement of coherent propagation of matter waves in quantum systems. Superfluidity in Bose–Einstein condensates of excitons can enable long-range ballistic exciton propagation and can lead to emerging long-scale interference patterns. Indirect excitons (IXs) are formed by electrons and holes in separated layers. The theory predicts that the reduced IX recombination enables IX superfluid propagation over macroscopic distances. Here, we present dislocation-like phase singularities in interference patterns produced by condensate of IXs. We analyze how exciton vortices and skyrmions should appear in the interference experiments and show that the observed interference dislocations are not associated with these phase defects. We show that the observed interference dislocations originate from the moiré effect in combined interference patterns of propagating condensate matter waves. The interference dislocations are formed by the IX matter waves ballistically propagating over macroscopic distances. The long-range ballistic IX propagation is the evidence for IX condensate superfluidity.

Moiré Pattern Formation on Porous Alumina Arrays Using Nanoimprint Lithography

2003 ◽  
Vol 15 (18) ◽  
pp. 1531-1534 ◽  
Author(s):  
J. Choi ◽  
R.B. Wehrspohn ◽  
U. Gösele
Keyword(s):  
Pattern Formation ◽  
Nanoimprint Lithography ◽  
Porous Alumina ◽  
Moire Pattern ◽  
Moiré Pattern

Scattering theory for symmetric spaces of noncompact type

1993 ◽  
Vol 72 (1) ◽  
pp. 1-29 ◽  
Author(s):  
Ralph S. Phillips ◽  
Mehrdad M. Shahshahani
Keyword(s):  
Scattering Theory ◽  
Symmetric Spaces ◽  
Noncompact Type
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