Results 1 to 10 of about 201,846 (204)
A Topological Signature in Cosmic Topology [PDF]
Class.Quant.Grav. 18 (2001) 1885-1906, 1999 Two procedures for obtaining (extracting and constructing) the topological signature of any multiply connected Robertson-Walker (RW) universe are presented. It is shown through computer-aided simulations that both approaches give rise to the same topological signature for a multiply connected flat RW universe.
G. I. GOMERO +2 more
arxiv +6 more sources
TopSig: Topology Preserving Document Signatures [PDF]
arXiv, 2012 Performance comparisons between File Signatures and Inverted Files for text retrieval have previously shown several significant shortcomings of file signatures relative to inverted files. The inverted file approach underpins most state-of-the-art search engine algorithms, such as Language and Probabilistic models.
Shlomo Geva, Christopher M. De Vries
arxiv +8 more sources
Are There Universal Signatures of Topological Phases in High-Harmonic Generation? Probably Not. [PDF]
Physical Review X, 2023 High harmonic generation (HHG) has developed in recent years as a promising tool for ultrafast materials spectroscopy. At the forefront of these advancements, several works proposed using HHG as an all-optical probe for topology of quantum matter by ...
Ofer Neufeld +4 more
doaj +2 more sources
Adapted topologies and higher rank signatures [PDF]
The Annals of Applied Probability, 2023 The topology of weak convergence does not account for the growth of information over time that is captured in the filtration of an adapted stochastic process. For example, two adapted stochastic processes can have very similar laws but give completely different results in applications such as optimal stopping, queuing theory, or stochastic programming.
Patric Bonnier +2 more
openalex +3 more sources
Topology and signature changes in braneworlds [PDF]
Classical and Quantum Gravity, 2004 It has been believed that topology and signature change of the universe can only happen accompanied by singularities, in classical, or instantons, in quantum, gravity. In this note, we point out however that in the braneworld context, such an event can be understood as a classical, smooth event.
G. W. Gibbons, Akihiro Ishibashi
openalex +5 more sources
Signature of topology via heat transfer analysis in the Su–Schrieffer–Heeger (SSH) model [PDF]
New Journal of Physics, 2023 In this work, we explore how thermodynamics can be a potential tool for identifying the topological phase transition. Specifically, we focus on a one-dimensional Su–Schrieffer–Heeger (SSH) chain sandwiched between two fermionic baths.
Vipul Upadhyay +3 more
doaj +2 more sources
Dynamical Determination of the Metric Signature in Spacetime of Nontrivial Topology [PDF]
Class.Quant.Grav.11:L61-L68,1994, 1993 The formalism of Greensite for treating the spacetime signature as a dynamical degree of freedom induced by quantum fields is considered for spacetimes with nontrivial topology of the kind ${\bf R}^{D-1} \times {\bf T}^1$, for varying $D$. It is shown that a dynamical origin for the Lorentzian signature is possible in the five-dimensional space ${\bf R}
E. Elizalde +2 more
arxiv +3 more sources
Fermi surface topology and signature of surface Dirac nodes in LaBi
Scientific Reports, 2017 Novel topological state of matter is one of the rapidly growing fields in condensed matter physics research in recent times. While these materials are fascinating from the aspect of fundamental physics of relativistic particles, their exotic transport ...
Ratnadwip Singha +2 more
doaj +2 more sources
Inter-chromosomal contacts demarcate genome topology along a spatial gradient [PDF]
Nature CommunicationsNon-homologous chromosomal contacts (NHCCs) between different chromosomes participate considerably in gene and genome regulation. Due to analytical challenges, NHCCs are currently considered as singular, stochastic events, and their extent and ...
Milad Mokhtaridoost +19 more
doaj +2 more sources
On discrete loop signatures and Markov loops topology [PDF]
Revista Matemática Iberoamericana, 2020 Our purpose is to explore, in the context of loop ensembles on finite graphs, the relations between combinatorial group theory, the topology of loops, loop measures, and signatures of discrete paths. We determine the distributions of the loop homotopy class, and of the first and second homologies, defined by the lower central series of the fundamental ...
Yves Le Jan
openalex +6 more sources