Results 31 to 40 of about 5,942 (275)
The commutative nonassociative algebra of metric curvature tensors
Forum of Mathematics, Sigma, 2021 The space of tensors of metric curvature type on a Euclidean vector space carries a two-parameter family of orthogonally invariant commutative nonassociative multiplications invariant with respect to the symmetric bilinear form determined by the metric ...
Daniel J. F. Fox
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Generalized dilatation operator method for non-relativistic holography
Physics Letters B, 2014 We present a general algorithm for constructing the holographic dictionary for Lifshitz and hyperscaling violating Lifshitz backgrounds for any value of the dynamical exponent z and any value of the hyperscaling violation parameter θ compatible with the ...
Wissam Chemissany, Ioannis Papadimitriou
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Universe as Klein–Gordon eigenstates
European Physical Journal C: Particles and Fields, 2021 We formulate Friedmann’s equations as second-order linear differential equations. This is done using techniques related to the Schwarzian derivative that selects the $$\beta $$ β -times $$t_\beta :=\int ^t a^{-2\beta }$$ t β : = ∫ t a - 2 β , where a is ...
Marco Matone
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New operators for spin net gravity: Definitions and consequences
, 2000 Two operators for quantum gravity, angle and quasilocal energy, are briefly reviewed. The requirements to model semi-classical angles are discussed.
Major, Seth
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Journal of High Energy Physics, 2020 Within the framework of the Duffin-Kemmer-Petiau (DKP) formalism with a deformation, an approach to the construction of the path integral representation in parasuperspace for the Green’s function of a spin-1 massive particle in external Maxwell’s field ...
Yu. A. Markov +2 more
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Surgery in Practice and Science, 2022 Introduction: The objective of this study was to review the experience of surgical registrars in performing trauma laparotomies at a level 1 trauma centre in New Zealand, and to benchmark this exposure against the current literature on the topic. Methods:
Jonathan Ko +5 more
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Idempotent structures in optimization [PDF]
, 2001 Consider the set A = R ∪ {+∞} with the binary operations o1 = max and o2 = + and denote by An the set of vectors v = (v1,...,vn) with entries in A. Let the generalised sum u o1 v of two vectors denote the vector with entries uj o1 vj , and the product
Kolokoltsov, V. N. (Vasiliĭ Nikitich)
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Partial suppression of nonadiabatic transitions
New Journal of Physics, 2014 The adiabatic following of eigenstates of time-varying Hamiltonians can serve as a useful tool in preparing or manipulating quantum states. If the time variation is not sufficiently slow, however, nonadiabatic transitions to unwanted states occur ...
Tomáš Opatrný, Klaus Mølmer
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Entropy, 2020 In the differential approach elaborated, we study the evolution of the parameters of Gaussian, mixed, continuous variable density matrices, whose dynamics are given by Hermitian Hamiltonians expressed as quadratic forms of the position and momentum ...
Julio A. López-Saldívar +2 more
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Modelling space with an atom of quantum geometry
, 2002 Within the context of loop quantum gravity there are several operators which measure geometry quantities. This work examines two of these operators, volume and angle, to study quantum geometry at a single spin network vertex—\u27an atom of geometry\u27 ...
Seifert, M., Major, Seth
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