Results 71 to 80 of about 132 (119)
Quasinormal modes of accelerating spacetime*
Chinese Physics CAbstract We calculate the exact values of the quasinormal frequencies for massless perturbations with spin propagating in purely accelerating spacetime. Using two different methods, we transfer the perturbation equations into hypergeometric differential equations and obtain ...
Tao 陶 Zhou 周 +1 more
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Journal of Pure and Applied Algebra, 2001 Let \(R\) be a lattice-ordered ring. \(R\) is called an \(f\)-ring if \(ca\wedge = ac\wedge b = 0\) whenever \( a\wedge b = 0\) and \(c>0.\) Let \(X\) be a completely regular topological space. Then the set of real-valued continuous functions on \(X\), denoted by \(C(X)\), is an \(f\)-ring.
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Pseudospectra of quasinormal modes and holography
Frontiers in PhysicsThe holographic duality (also known as AdS/CFT correspondence or gauge/gravity duality) postulates that strongly coupled quantum field theories can be described in a dual way in asymptotically anti-de Sitter space. One of the cornerstones of this duality is the description of thermal states as black holes with asymptotically anti-de Sitter boundary ...
Daniel Areán +4 more
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Hyperboloidal approach to quasinormal modes
Frontiers in PhysicsOscillations of black hole spacetimes exhibit divergent behavior near the bifurcation sphere and spatial infinity. In contrast, these oscillations remain regular when evaluated near the event horizon and null infinity. The hyperboloidal approach provides a natural framework to bridge these regions smoothly, resulting in a geometric regularization of ...
Panosso Macedo, Rodrigo +1 more
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Contextual MEG and EEG Source Estimates Using Spatiotemporal LSTM Networks. [PDF]
Front Neurosci, 2021 Dinh C +4 more
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Quasinormal Modes of Nonthermal Fixed Points
Physical Review LettersQuasinormal modes play a prominent role in the relaxation of diverse physical systems to equilibria, ranging from astrophysical black holes to tiny droplets of quark-gluon plasma at the RHIC and LHC accelerators. We propose that a novel kind of quasinormal mode governs the direct approach to self-similar time evolution of nonthermal fixed points, whose
Matisse De Lescluze, Michal P. Heller
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Black Hole Quasinormal Mode Resonances
Physical Review LettersBlack hole quasinormal mode frequencies can be very close to each other ("avoided crossings") or even completely degenerate ("exceptional points") when the system is characterized by more than one parameter. We investigate this resonant behavior and demonstrate that near exceptional points, the two modes are just different covers of the same complex ...
Yiqiu Yang +2 more
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Semigroups of quasinormal operators [PDF]
Pacific Journal of Mathematics, 1982 openaire +2 more sources
Iterative hard thresholding in genome-wide association studies: Generalized linear models, prior weights, and double sparsity. [PDF]
Gigascience, 2020 Chu BB +7 more
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Infrared Image Super-Resolution Reconstruction Based on Quaternion and High-Order Overlapping Group Sparse Total Variation. [PDF]
Sensors (Basel), 2019 Liu X, Chen Y, Peng Z, Wu J.
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