Results 71 to 80 of about 591,643 (217)
Renormalization group flow of f(R)-gravity [PDF]
, 2008 We use the functional renormalization group equation for quantum gravity to construct a non-perturbative flow equation for modified gravity theories of the form $S = \int d^dx \sqrt{g} f(R)$.
Afd Theoretical Physics (ITF) +4 more
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The information metric on the moduli space of instantons with global symmetries
Physics Letters B, 2016 In this note we revisit Hitchin's prescription [1] of the Fisher metric as a natural measure on the moduli space of instantons that encodes the space–time symmetries of a classical field theory. Motivated by the idea of the moduli space of supersymmetric
Emanuel Malek +2 more
doaj +1 more source
Lineal gravity from planar gravity [PDF]
Physical Review Letters, 1993 13 pages, plain ...
openaire +3 more sources
From the Fibonacci Icosagrid to E8 (Part II): The Composite Mapping of the Cores
CrystalsThis paper is part of a series that describes the Fibonacci icosagrid quasicrystal (FIG) and its relation to the E8 root lattice. The FIG was originally constructed to represent the intersection points of an icosahedrally symmetric collection of planar ...
Richard Clawson, Fang Fang, Klee Irwin
doaj +1 more source
Why gravity is not an entropic force [PDF]
, 2010 The remarkable connections between gravity and thermodynamics seem to imply that gravity is not fundamental but emergent, and in particular, as Verlinde suggested, gravity is probably an entropic force.
Gao, Shan, Shan, Gao
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Gravity and the cells of gravity receptors in mammals [PDF]
Advances in Space Research, 1983 Two new findings, that crystals located in the inner ear gravity receptors of mammals have the internal organization requisite for the piezoelectric property, and that sensory hair cells of these same receptors possess contractile-appearing striated organelles, have prompted the author to model mammalian gravity receptors in the ear on the principles ...
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An algebraic classification of exceptional EFTs
Journal of High Energy Physics, 2019 We classify four-dimensional effective field theories (EFTs) with enhanced soft limits, which arise due to non-linearly realised symmetries on the Goldstone modes of such theories.
Diederik Roest +2 more
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Supersymmetric minisuperspace models in self-dual loop quantum cosmology
Journal of High Energy Physics, 2021 In this paper, we study a class of symmetry reduced models of N $$ \mathcal{N} $$ = 1 super- gravity using self-dual variables. It is based on a particular Ansatz for the gravitino field as proposed by D’Eath et al. We show that the essential part of the
K. Eder, H. Sahlmann
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Conformal gravity and extensions of critical gravity
Physical Review D, 2011 Higher-order curvature corrections involving the conformally-invariant Weyl-squared action have played a role in two recent investigations of four-dimensional gravity; in critical gravity, where it is added to the standard cosmological Einstein-Hilbert action with a coefficient tuned to make the massive ghostlike spin-2 excitations massless, and in a ...
Lu, H., Pang, Yi, Pope, C. N.
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Probing gluon GTMDs through exclusive coherent diffractive processes
European Physical Journal C: Particles and Fields, 2023 We extend a previous GTMD model to improve the description of the HERA data on diffractive dijet production, and include exclusive coherent diffractive $$J/\psi $$ J / ψ production data.
Daniël Boer, Chalis Setyadi
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