Results 61 to 70 of about 99,723 (258)
Soft edges: the many links between soft and edge modes
Journal of High Energy PhysicsBoundaries in gauge theory and gravity give rise to symmetries and charges at both finite and asymptotic distance. Due to their structural similarities, it is often held that soft modes are some kind of asymptotic limit of edge modes.
Gonçalo Araujo-Regado +3 more
doaj +1 more source
Solitons and geometrical structures in a perfect fluid spacetime [PDF]
Rocky Mountain Journal of Mathematics, 2017 Geometrical aspects of a perfect fluid spacetime are described in terms of different curvature tensors and $\eta$-Ricci and $\eta$-Einstein solitons in a perfect fluid spacetime are determined.
A. Blaga
semanticscholar +1 more source
Universal Entanglement and an Information‐Complete Quantum Theory
Advanced Physics Research, EarlyView.This Perspective summarize an informationcomplete quantum theory which describes a fully quantum world without any classical systems and concepts. Here spacetime/gravity, having to be a physical quantum system, universally entangles matter (matter fermions and their gauge fields) as an indivisible trinity, and encodes information‐complete physical ...
Zeng‐Bing Chen
wiley +1 more source
Generalized axisymmetric spacetimes [PDF]
Communications in Mathematical Physics, 1979 Properties of space-times admitting a two parameter abelian symmetry group acting on a null two-surface are investigated. Within this framework, a class of new solutions of Einstein's vacuum equations are found. Some analogies with the theory of black hole are pointed out.
BAMPI, FRANCO, CIANCI, ROBERTO
openaire +3 more sources
Gravitational entropy is observer-dependent
Journal of High Energy PhysicsIn quantum gravity, it has been argued that a proper accounting of the role played by an observer promotes the von Neumann algebra of observables in a given spacetime subregion from Type III to Type II.
Julian De Vuyst +3 more
doaj +1 more source
Fundamental U-Theory of Time. Part 1 [PDF]
Философия и космология, 2016 The Fundamental U-Theory of Time (Part 1) is an original theory that aims to unravel the mystery of what exactly is ‘time’. To date very few explanations, from the branches of physics or cosmology, have succeeded to provide an accurate and comprehensive ...
Yuvraj J. Gopaul
doaj
Gravity from transactions: fulfilling the entropic gravity program
Journal of Physics Communications, 2023 This is a comprehensive review of new developments in entropic gravity in light of the Relativistic Transactional Interpretation (RTI). A transactional approach to spacetime events can give rise in a natural way to entropic gravity (in the way originally
A Schlatter, R E Kastner
doaj +1 more source
Levels of Spacetime Emergence in Quantum Gravity [PDF]
Philosophy Beyond Spacetime, 2018 We explore the issue of spacetime emergence in quantum gravity by articulating several levels at which this can be intended. These levels correspond to the reconstruction moves that are needed to recover the classical and continuum notion of space and ...
D. Oriti
semanticscholar +1 more source
Journal of the Society for Information Display, EarlyView.Modern AI systems can now synthesize coherent multimedia experiences, generating video and audio directly from text prompts. These unified frameworks represent a rapid shift toward controllable and synchronized content creation. From early neural architectures to transformer and diffusion paradigms, this paper contextualizes the ongoing evolution of ...
Charles Ding, Rohan Bhowmik
wiley +1 more source
Crossed products and quantum reference frames: on the observer-dependence of gravitational entropy
Journal of High Energy PhysicsA significant step towards a rigorous understanding of perturbative gravitational entropy was recently achieved by a series of works showing that a proper accounting of gauge invariance and observer degrees of freedom converts the Type III algebra of QFT
Julian De Vuyst +3 more
doaj +1 more source