نتایج جستجو برای: aligned lorentzian force

تعداد نتایج: 223120  

Journal: :Physical Review D 1994

Journal: :Advances in Theoretical and Mathematical Physics 2012

Journal: :Geometriae Dedicata 2015

Journal: :Differential Geometry and Its Applications 2022

We study homogeneous Lorentzian manifolds M=G/L of a connected reductive Lie group G modulo subgroup L, under the assumption that M is (almost) G-effective and isotropy representation totally reducible. show description such reduces to case semisimple groups G. Moreover, we prove space reductive. describe all reducible subgroups Lorentz divide them into three types. The Type I are compact, whil...

2017
You Yang Jing Sun Xiaolu Liu Zhenzhen Guo Yunhu He Dan Wei Meiling Zhong Likun Guo Hongsong Fan Xingdong Zhang

Native tissue is naturally comprised of highly-ordered cell-matrix assemblies in a multi-hierarchical way, and the nano/submicron alignment of fibrous matrix is found to be significant in supporting cellular functionalization. In this study, a self-designed wet-spinning device appended with a rotary receiving pool was used to continuously produce shear-patterned hydrogel microfibers with aligne...

2017
Job Feldbrugge Jean-Luc Lehners Neil Turok

We argue that the Lorentzian path integral is a better starting point for quantum cosmology than its Euclidean counterpart. In particular, we revisit the minisuperspace calculation of the Feynman path integral for quantum gravity with a positive cosmological constant. Instead of rotating to Euclidean time, we deform the contour of integration over metrics into the complex plane, exploiting Pica...

2014
Shahrzad Towfighian Siyuan He Ridha Ben Mrad

An electrostatic actuator is designed to move a 1 mm mirror, 58 μm out of plane at 25 volts. Large out-of-plane displacement is obtained from repulsive forces generated on four sets of comb drive fingers attached to the mirror plate in the middle. The proposed actuator is a customized design of a previous study for low voltage applications. The static modeling of the actuator was performed usin...

Journal: :Physical Review A 2012

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