نتایج جستجو برای: nonspreading mappings

تعداد نتایج: 21884  

Journal: :Physical review letters 2005
R Stützle M C Göbel Th Hörner E Kierig I Mourachko M K Oberthaler M A Efremov M V Fedorov V P Yakovlev K A H van Leeuwen W P Schleich

We propose and experimentally demonstrate a method to prepare a nonspreading atomic wave packet. Our technique relies on a spatially modulated absorption constantly chiseling away from an initially broad de Broglie wave. The resulting contraction is balanced by dispersion due to Heisenberg's uncertainty principle. This quantum evolution results in the formation of a nonspreading wave packet of ...

Journal: :Physical review letters 2012
Luis Cueto-Felgueroso Ruben Juanes

Drops and bubbles are nonspreading, local, compactly supported features. They are also equilibrium configurations in partial wetting phenomena. Yet, current macroscopic theories of capillary-dominated flow are unable to describe these systems. We propose a framework to model multiphase flow in porous media with nonspreading equilibrium configurations. We illustrate our approach with a one-dimen...

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