Results 21 to 30 of about 173,809,520 (302)
Semi-classical analysis of the string theory cigar
Journal of High Energy Physics, 2021 We study the semi-classical limit of the reflection coefficient for the SL(2, ℝ) k /U(1) CFT. For large k, the CFT describes a string in a Euclidean black hole of 2-dimensional dilaton-gravity, whose target space is a cigar with an asymptotically linear ...
Daniel Louis Jafferis, Elliot Schneider
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Journal of High Energy Physics, 2021 We study the SL(2) transformation properties of spherically symmetric perturbations of the Bertotti-Robinson universe and identify an invariant μ that characterizes the backreaction of these linear solutions.
Shahar Hadar +2 more
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Mechanisms, Laws, and Regularities [PDF]
, 2011 Leuridan argued that mechanisms cannot provide a genuine alternative to laws of nature as a model of explanation in the sciences, and he advocates Mitchell’s pragmatic account of laws.
Andersen, Holly +2 more
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Celestial operator product expansions and w1+∞ symmetry for all spins
Journal of High Energy Physics, 2022 The operator product expansion of massless celestial primary operators of arbitrary spin is investigated. Poincaré symmetry is found to imply a set of recursion relations on the operator product expansion coefficients of the leading singular terms at ...
E. Himwich, M. Pate, K. Singh
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Nature, 1944 THE time in which Halley lived was crucial in the history of science in more than one respect, but of all its aspects none is more significant than that which shows the restoration of the possibility of cosmological studies. Astronomy before Copernicus was essentially and altogether cosmological.
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The laws of nature and the problems of modern cosmology [PDF]
, 2023 The notion that nature is subject to laws is exciting from many different viewpoints. This paper is based on the context of modern cosmology. It will list the significant interdisciplinary implications generated by various aspects of the contemporary ...
Gaspar, Yves +3 more
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A note on the subleading soft graviton
Journal of High Energy Physics, 2021 We show that the soft part of the charge generating infinitesimal superrotations can be expressed, in harmonic gauge, in terms of metric components evaluated at the boundaries of null infinity that are subleading in a large radius expansion.
Elizabeth Himwich +2 more
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Conformally soft photons and gravitons
Journal of High Energy Physics, 2019 The four-dimensional S-matrix is reconsidered as a correlator on the celestial sphere at null infinity. Asymptotic particle states can be characterized by the point at which they enter or exit the celestial sphere as well as their SL(2, ℂ) Lorentz ...
Laura Donnay +2 more
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How Was Nature Able to Discover Its Own Laws—Twice?
, 2021 The central thesis of the modern scientific revolution is that nature is objective. Yet, somehow, out of that objective reality, projective systems emerged—cognitive and purposeful.
Addy Pross
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An effective matrix model for dynamical end of the world branes in Jackiw-Teitelboim gravity
Journal of High Energy Physics, 2022 We study Jackiw-Teitelboim gravity with dynamical end of the world branes in asymptotically nearly AdS2 spacetimes. We quantize this theory in Lorentz signature, and compute the Euclidean path integral summing over topologies including dynamical branes ...
Ping Gao +2 more
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