Results 51 to 60 of about 5,719,386 (368)

Space-time Uncertainty Principle from Breakdown of Topological Symmetry [PDF]

open access: yes, 1997
Starting from topological quantum field theory, we derive space-time uncertainty relation with respect to the time interval and the spatial length proposed by Yoneya through breakdown of topological symmetry in the large N matrix model.
Banks T.   +3 more
core   +3 more sources

Topological Band Theory for Non-Hermitian Hamiltonians. [PDF]

open access: yesPhysical Review Letters, 2017
We develop the topological band theory for systems described by non-Hermitian Hamiltonians, whose energy spectra are generally complex. After generalizing the notion of gapped band structures to the non-Hermitian case, we classify "gapped" bands in one ...
Huitao Shen, B. Zhen, L. Fu
semanticscholar   +1 more source

GTI-space : the space of generalized topological indices [PDF]

open access: yes, 2008
A new extension of the generalized topological indices (GTI) approach is carried out torepresent 'simple' and 'composite' topological indices (TIs) in an unified way.
A.R Matamala   +34 more
core   +1 more source

Real-Space Observation of Skyrmionium in a Ferromagnet-Magnetic Topological Insulator Heterostructure.

open access: yesNano letters (Print), 2018
The combination of topological insulators, that is, bulk insulators with gapless, topologically protected surface states, with magnetic order is a love-hate relationship that can unlock new quantum states and exotic physical phenomena, such as the ...
Shilei Zhang   +3 more
semanticscholar   +1 more source

The character of free topological groups I

open access: yesApplied General Topology, 2005
A systematic analysis is made of the character of the free and free abelian topological groups on uniform spaces and on topological spaces. In the case of the free abelian topological group on a uniform space, expressions are given for the character in ...
Peter Nickolas, Mikhail Tkachenko
doaj   +1 more source

Soft topological space and topology on the Cartesian product

open access: yes, 2016
The paper deals with a soft topological space which is dened over an initial universe set U with a xed set of parameters E . The main goal is to point out that any soft topological space is homeomorphic to a topological space $( E \times U, \tau )$ where
Matejdes Milan
semanticscholar   +1 more source

Door spaces on N-topology

open access: yesRatio Mathematica, 2023
In this article, we explore the idea of door space on -topological space. Here, we discuss which door spaces in this space are related with  submaximal. The equivalent conditions shows how it connects a -topological property. Also, we derive various door
Loyala Foresith Spencer J   +1 more
doaj   +1 more source

Topological Insulators in Twisted Transition Metal Dichalcogenide Homobilayers. [PDF]

open access: yesPhysical Review Letters, 2018
We show that moiré bands of twisted homobilayers can be topologically nontrivial, and illustrate the tendency by studying valence band states in ±K valleys of twisted bilayer transition metal dichalcogenides, in particular, bilayer MoTe_{2}.
Fengcheng Wu   +5 more
semanticscholar   +1 more source

Application of a Novel Subject Classification Scheme for a Bibliographic Database Using a Data-Driven Correspondence

open access: yesFrontiers in Big Data, 2020
A novel subject classification scheme should often be applied to a preclassified bibliographic database for the research evaluation task. Generally, adopting a new subject classification scheme is labor intensive and time consuming, and an effective and ...
Kei Kurakawa, Yuan Sun, Satoko Ando
doaj   +1 more source

Home - About - Disclaimer - Privacy