Results 11 to 20 of about 15,978 (295)
European Physical Journal C: Particles and FieldsUsing effective field theory methods, we derive the Carrollian analog of the geodesic action. We find that it contains both “electric” and “magnetic” contributions that are in general coupled to each other.
Luca Ciambelli, Daniel Grumiller
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Asymptotic expansion of closed geodesics in homology classes. [PDF]
, 2004 In this paper we give a full asymptotic expansion for the number of closed geodesics in homology classes.
Liu, Dongsheng
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Quasihyperbolic geodesics are hyperbolic quasi-geodesics [PDF]
Journal of the European Mathematical Society, 2020 This is a tale describing the large scale geometry of Euclidean plane domains with their hyperbolic or quasihyperbolic distances. We prove that in any hyperbolic plane domain, hyperbolic and quasihyperbolic quasi-geodesics are quantitatively the same curves. We also demonstrate the simultaneous Gromov hyperbolicity of such domains with their hyperbolic
Herron, David A., Buckley, Stephen M.
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Lyapunov exponent, ISCO and Kolmogorov–Senai entropy for Kerr–Kiselev black hole
European Physical Journal C: Particles and Fields, 2021 Geodesic motion has significant characteristics of space-time. We calculate the principle Lyapunov exponent (LE), which is the inverse of the instability timescale associated with this geodesics and Kolmogorov–Senai (KS) entropy for our rotating Kerr ...
Monimala Mondal +2 more
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, 1990 Motivated by the close relation between Aubry-Mather theory and minimal geodesies on a 2-torus we study the existence and properties of minimal geodesics in compact Riemannian manifolds of dimension ≥3.
Bangert, Victor
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Information Geometry in Roegenian Economics
Entropy, 2022 We characterise the geometry of the statistical Roegenian manifold that arises from the equilibrium distribution of an income of noninteracting identical economic actors.
Constantin Udriste, Ionel Tevy
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Frontiers in Human Neuroscience, 2016 In pain management as well as other clinical applications of neuromodulation, it is important to consider the timing parameters influencing activity-dependent plasticity, including pulsed versus sustained currents, as well as the spatial action of ...
Phan Luu +8 more
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Quasinormal modes of black holes with multiple photon spheres
Journal of High Energy Physics, 2022 For a static and spherically symmetric black hole, a photon sphere is composed of circular null geodesics of fixed radius, and plays an important role in observing the black hole.
Guangzhou Guo +3 more
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Methods for Examining Electrophysiological Coherence in Epileptic Networks
Frontiers in Neurology, 2013 Epilepsy may reflect a focal abnormality of cerebral tissue, but the generation of seizures typically involves propagation of abnormal activity through cerebral networks.
Jasmine eSong +8 more
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The forces and Penrose process in Friedman spacetime
Physics of Complex Systems, 2021 In this paper, we compare the force expressions in both comoving synchronous and Ellis coordinate systems in Friedman-Robertson-Walker spacetime in order to understand how the coordinate transformation affects the inertial forces.
Андрей Анатольевич Гриб +1 more
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