De sitter spacetime - PowerPoint PPT Presentation

Temporal entities and the modeling of simultaneity in CIDOC CRM are under discussion at the upcoming meeting. The current approach considers the cardinality of certain relations, aiming to streamline the representation of time-spans and spacetime volumes. The evolving perspectives on the spatial com

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Exploring the implications of asymptotic flatness and symmetry in physical spacetime, focusing on concepts like conformal completion, Einstein's equations, and the Bondi-Metzner-Sachs group (BMS) for providing physical interpretations of mass, linear momentum, and angular rotation subgroups.

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Explore the world of geometric algebra and calculus through topics such as vector derivatives, Cauchy-Riemann equations, Maxwell equations, and spacetime physics. Unify diverse mathematical concepts to gain insights into analytic functions, differential operators, and directed integration.

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Investigating f(R) gravity models by extending the Einstein-Hilbert action with an arbitrary function f(R). Conditions for viable models include positive gravitational constants, stable cosmological perturbations, asymptotic behavior towards the ΛCDM model, stability of late-time de Sitter point, a

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Exploring the coupling of gravity in a theory with metastable vacuum through the lens of topological phases of eternal inflation. Investigating the behavior of false and true vacua, de Sitter space, and bubble nucleation, offering insights into string theory landscapes and observational implications

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Gravitational waves, predicted by Einstein's Theory of General Relativity, are incredibly weak ripples in spacetime that can be detected using interferometers. This method involves using suspended mirrors to reproduce free-fall conditions, enhancing signals through various techniques like Michelson

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Introduction of standardized protocols and alternative safety plans helped reduce overutilization of patient sitters by 100% at University Hospital's 9th-floor Medicine unit, addressing cost concerns and enhancing patient safety. The initiative aimed to decrease overreliance on patient sitters witho

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Masses bending spacetime, black holes trapping light, and the detection of gravitational waves by LIGO have revolutionized our understanding of the universe. From Eddington's 1919 experiment confirming light bending to Hubble's discovery of an expanding universe, key milestones in cosmology have res

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Delve into the fascinating world of General Relativity as we discuss the equivalence principle, gravitational waves, properties of spacetime, and the effects of curvature in the presence of gravity. Discover how Einstein's revolutionary theories have reshaped our understanding of the universe, leadi

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The research delves into holographic complexity in a hybrid de Sitter spacetime, exploring the AdS/CFT correspondence, quantum information in the bulk, and computational complexity. It also examines the volume of the ERB, evolution of complexity in CFT, and probes cosmological horizons using hologra

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Explore the definitions, relationships, and properties of spacetime volume, temporal information, and their components like time spans and entities. Learn about how events are witnessed and defined within specific spatiotemporal contexts.

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The intriguing concept of the Universe being a black hole is explored through discussions of Schwarzschild metric, observable universe's density, spacetime diagrams, and proper time for inside observers. The reversal of time within a black hole leads to thought-provoking insights into the nature of

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The profound connection between thermodynamics and gravity in cosmological models, delving into black hole entropy, Friedmann equations, and the derivation of spacetime behavior from thermodynamic principles. Investigate the implications of modified gravity theories on the understanding of the unive

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Causal sets propose a discrete and dynamical spacetime structure, where spacetime elements, called spacetime atoms, evolve through stochastic dynamics. This growth process governs the passage of time, manifesting as accretion or birth of new elements. Classical Sequential Growth Models offer a frame

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Recent burst of interest in the study of spontaneous breaking of local supersymmetry and the emergence of positive cosmological constant. Explore the Volkov-Akulov model for SUSY breaking and its application in cosmology and inflation.

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In this research, the focus is on exploring ensembles of explicit compactifications of string theory to refine or support conjectures about de Sitter solutions, field ranges, and more. By generating a large ensemble of 4d effective quantum gravity theories through the analysis of Kreuzer-Skarke subs

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This study delves into observational phenomena in spacetimes with non-negative cosmological constants, focusing on photon motion, Kerr-de Sitter geometries, and shadows of Kerr-de Sitter naked singularities. Explore related concepts such as spherical photon orbits, measuring NS spin, and equations o

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Journey through the world of gravitational waves, from their theoretical proposal in 1905 to the groundbreaking first detection in 2015 at LIGO. Explore the awe-inspiring merger of black holes, the curvature of spacetime, and the intricate simulations that reveal the secrets of our universe. Delve i

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This schema represents the relationships between entities, events, time spans, spatial information, and more. It outlines how entities are identified, events occur within time spans and places, and the existence of physical things is defined. The concepts of beginning and end of existence, spatial a

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Delve into the fascinating world of quantizing gauge theories and relativistically invariant theories in curved spacetime through the study of 10D massless superparticles. Explore the algebraic approach using the Faddeev-Jackiw method, covariant quantization principles, and the use of Darboux's theo

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Investigate the quantization of a 10-dimensional massless superparticle through algebraic methods and covariant quantization of gauge theories in curved spacetime. Explore the use of Faddeev-Jackiw method, Hamiltonian reduction, canonical variables, inner product definitions, and Brink-Schwartz acti

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Dive into the world of gravitational wave simulations and waveforms, from the disturbance in the curvature of spacetime proposed in 1905 to the first detection at LIGO in 2015. Explore the fascinating observations like GW150914, the inspiral and merger of black holes, and the simulation methods used

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Explore the intricate relationships between spacetime volumes, temporal entities, and physical things within the CRM framework. Learn about definitions, spatiotemporal overlaps, presence, and more.

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Delve into the recent progress on black hole information, exploring the concept of quantum extremal surfaces in an evaporating black hole spacetime, and the implications for unitarity and Hawking radiation. Discover the role of Euclidean wormholes and the gravitational path integral in shedding ligh

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