Results 21 to 30 of about 8,745,456 (267)
Black Hole Surface Gravity in Doubly Special Relativity Geometries
Universe, 2022 In a quantum gravity theory, spacetime at mesoscopic scales can acquire a novel structure very different from the classical concept of general relativity.
José Javier Relancio, Stefano Liberati
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Why even source-free gravity must be quantized
European Physical Journal C: Particles and Fields, 2022 I note, on the most elementary grounds: its classical ultraviolet catastrophe, that even source-free General Relativity must be quantized, despite some eminent opinions to the contrary and with a little fine print.
S. Deser
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No Preferred Reference Frame at the Foundation of Quantum Mechanics
Entropy, 2021 Quantum information theorists have created axiomatic reconstructions of quantum mechanics (QM) that are very successful at identifying precisely what distinguishes quantum probability theory from classical and more general probability theories in terms ...
William Stuckey +2 more
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Scattering amplitudes and N-body post-Minkowskian Hamiltonians in general relativity and beyond
Journal of High Energy Physics, 2023 We present a general framework for calculating post-Minskowskian, classical, conservative Hamiltonians for N non-spinning bodies in general relativity from relativistic scattering amplitudes.
Callum R. T. Jones, Mikhail Solon
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Why we need to quantise everything, including gravity
npj Quantum Information, 2017 Why we need to quantise everything, including gravity Quantum gravity—the theory that will merge quantum theory and general relativity—is yet to be found.
C. Marletto, V. Vedral
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Spacetime Emergence: An (In)effective Story
Philosophy of PhysicsPhysicists and philosophers are increasingly prone to regarding our current physical theories as providing ‘effective descriptions’ of real-world systems.
Mike D. Schneider
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Non-Commutative Worlds and Classical Constraints
Entropy, 2018 This paper reviews results about discrete physics and non-commutative worlds and explores further the structure and consequences of constraints linking classical calculus and discrete calculus formulated via commutators.
Louis H. Kauffman
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Aspects of Semiclassical Black Holes: Development and Open Problems
Advances in High Energy Physics, 2021 The current work is a review, dedicated to the study of semiclassical aspects of black holes. We begin by briefly looking at the main statements of general relativity.
Alexander Y. Yosifov
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Modified Gravity Approaches to the Cosmological Constant Problem
Universe, 2023 The cosmological constant and its phenomenology remain among the greatest puzzles in theoretical physics. We review how modifications of Einstein’s general relativity could alleviate the different problems associated with it that result from the ...
Foundational Aspects of Dark Energy (FADE) Collaboration +7 more
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Solid Pseudopapillary Neoplasm of the Pancreas in Children and Adolescents: Expert Recommendations
Pediatric Blood &Cancer, EarlyView.ABSTRACT Solid pseudopapillary neoplasm of the pancreas (SPN) is a rare low‐grade malignant exocrine pancreatic tumor, mostly discovered during the second decade of life in females, with a very good prognosis, provided microscopically complete surgical excision is achieved.
Sabine Irtan +18 more
wiley +1 more source