Results 31 to 40 of about 145,201 (332)

Topology beyond the horizon: how far can it be probed? [PDF]

open access: yes, 2015
The standard cosmological model does not determine the spatial topology of the universe. This article revisits the signature of a non-trivial topology on the properties of the cosmic microwave background anisotropies.
Fabre, Ophélia   +2 more
core   +2 more sources

Bulk topological signatures of a quasicrystal [PDF]

open access: yesPhysical Review B, 2021
We show how measuring real space properties such as the charge density in a quasiperiodic system can be used to gain insight into their topological properties. In particular, for the Fibonacci chain, we show that the total onsite charge oscillates when plotted in the appropriate coordinates, and the number of oscillations is given by the Chern number ...
Gautam Rai   +4 more
openaire   +2 more sources

Topological signatures in nodal semimetals through neutron scattering

open access: yesNew Journal of Physics, 2022
Topological nodal semimetals are known to host a variety of fascinating electronic properties due to the topological protection of the band-touching nodes.
Thanh Nguyen   +7 more
doaj   +1 more source

Hirzebruch $\chi_y$-genera modulo $8$ of fiber bundles for odd integers $y$ [PDF]

open access: yes, 2016
I. Hambleton, A. Korzeniewski and A. Ranicki have proved that the signature of a fiber bundle F↪E→B of closed, connected, compatibly oriented PL manifolds is always multiplicative mod4, i.e. σ(E)≡σ(F)σ(B)mod4. In this paper, we consider the Hirzebruch χy-
Rovi, C., Yokura, S.
core   +1 more source

An Enhanced Backbone-Assisted Reliable Framework for Wireless Sensor Networks

open access: yesSensors, 2010
An extremely reliable source to sink communication is required for most of the contemporary WSN applications especially pertaining to military, healthcare and disaster-recovery.
Amna Ali   +4 more
doaj   +1 more source

Clock-dependent spacetime

open access: yesJournal of High Energy Physics, 2021
Einstein’s theory of general relativity is based on the premise that the physical laws take the same form in all coordinate systems. However, it still presumes a preferred decomposition of the total kinematic Hilbert space into local kinematic Hilbert ...
Sung-Sik Lee
doaj   +1 more source

A Network Topology Control and Identity Authentication Protocol with Support for Movable Sensor Nodes

open access: yesSensors, 2015
It is expected that in the near future wireless sensor network (WSNs) will be more widely used in the mobile environment, in applications such as Autonomous Underwater Vehicles (AUVs) for marine monitoring and mobile robots for environmental ...
Ying Zhang   +4 more
doaj   +1 more source

Relationship between diffraction peak, network topology, and amorphous-forming ability in silicon and silica

open access: yesScientific Reports, 2021
The network topology in disordered materials is an important structural descriptor for understanding the nature of disorder that is usually hidden in pairwise correlations.
Shinji Kohara   +8 more
doaj   +1 more source

Metric-signature topological transitions in dispersive metamaterials [PDF]

open access: yesPhysical Review E, 2014
The metric signature topological transitions associated with the propagation of electromagnetic waves in a dispersive metamaterial with frequency-dependent and anisotropic dielectric and magnetic responses are examined in the present work. The components of the reciprocal-space metric tensor depend upon both the electric permittivity and magnetic ...
Reyes Gómez, Ernesto Amador   +3 more
openaire   +4 more sources

Evolution of dynamical signature in the X-cube fracton topological order

open access: yesPhysical Review Research, 2022
As an unconventional realization of topological orders with an exotic interplay of topology and geometry, fracton (topological) orders feature subextensive topological ground-state degeneracy and subdimensional excitations that are movable only within a ...
Chengkang Zhou   +4 more
doaj   +1 more source

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