Results 41 to 50 of about 1,420,963 (277)

Holographic representation of local bulk operators [PDF]

open access: yes, 2006
The Lorentzian anti-de Sitter/conformal field theory correspondence implies a map between local operators in supergravity and nonlocal operators in the CFT.
A. Hamilton   +3 more
semanticscholar   +1 more source

Generalized dilatation operator method for non-relativistic holography

open access: yesPhysics 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
doaj   +1 more source

The commutative nonassociative algebra of metric curvature tensors

open access: yesForum 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
doaj   +1 more source

Path integral representation for inverse third order wave operator within the Duffin-Kemmer-Petiau formalism. Part I

open access: yesJournal 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
doaj   +1 more source

Universe as Klein–Gordon eigenstates

open access: yesEuropean 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
doaj   +1 more source

Liouville properties and critical value of fully nonlinear elliptic operators [PDF]

open access: yes, 2016
We prove some Liouville properties for sub- and supersolutions of fully nonlinear degenerate elliptic equations in the whole space. Our assumptions allow the coefficients of the first order terms to be large at infinity, provided they have an appropriate
Bardi, Martino, Cesaroni, Annalisa
core   +2 more sources

Surgical registrars’ exposure to trauma laparotomy: A retrospective study from a level 1 trauma centre in New Zealand

open access: yesSurgery 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
doaj   +1 more source

On the eigenfunction expansion for Hamilton operators

open access: yesJournal of Spectral Theory, 2015
A spectral representation for solutions to linear Hamilton equations with nonnegative energy in Hilbert spaces is obtained. This paper continues our previous work on Hamilton equations with positive definite energy. Our approach is a special version of M. Krein's spectral theory of J
Komech, Alexander, Kopylova, Elena
openaire   +3 more sources

Partial suppression of nonadiabatic transitions

open access: yesNew 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
doaj   +1 more source

Differential Parametric Formalism for the Evolution of Gaussian States: Nonunitary Evolution and Invariant States

open access: yesEntropy, 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
doaj   +1 more source

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