Results 11 to 20 of about 218,499 (266)

Spectral action approach to higher derivative gravity

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
We study the spectral action approach to higher derivative gravity. The work focuses on the classical aspects. We derive the complete and simplified form of the purely gravitational action up to the 6-derivative terms. We also derive the equivalent forms
Ravi Mistry   +2 more
doaj   +1 more source

Morphine Derivatives with Antianalgesic Action [PDF]

open access: yesJournal of Pharmacy and Pharmacology, 1954
Summary A series of N-alkyl substituted derivatives of morphine has been synthesised and examined for analgesic and antianalgesic action. Several of these compounds have shown powerful antianalgesic activity, N-propylnormorphine and the diacetyl and dipropionyl derivatives of N-allylnormorphine (nalorphine) being about as active as ...
A F, GREEN, G K, RUFFELL, E, WALTON
openaire   +2 more sources

Duality-invariant extensions of Einstein-Maxwell theory

open access: yesJournal of High Energy Physics, 2021
We investigate higher-derivative extensions of Einstein-Maxwell theory that are invariant under electromagnetic duality rotations, allowing for non-minimal couplings between gravity and the gauge field. Working in a derivative expansion of the action, we
Pablo A. Cano, Ángel Murcia
doaj   +1 more source

Derived Equivalences of Actions of a Category [PDF]

open access: yesApplied Categorical Structures, 2012
23 pages, ver 2: A construction of oplax functors using a comonad is added by generalizing a tiny example that should be corrected either by putting a relation\beta'\alpha'= \id_{x'} on X(2) or changing the definition of X(a) to "X(a)(z):= y' for z=x,y and X(a)(\gamma):= \id_{y'} for \gamma = \id_x, \id_y, \alpha, \beta" in Section 2.
openaire   +2 more sources

From Simple to Composite Agency: On Kirk Ludwig’s From Individual to Plural Agency

open access: yesJournal of Social Ontology, 2019
According to Kirk Ludwig, only primitive actions are actions in a primary and non-derivative sense of the term ‘action’. Ludwig takes this to imply that the notion of collective action is a façon de parler – useful perhaps, but secondary and derivative.
Olle Blomberg
doaj   +2 more sources

AdS5 holography and higher-derivative supergravity

open access: yesJournal of High Energy Physics, 2022
We study four-derivative corrections to 5d N $$ \mathcal{N} $$ = 2 minimal gauged supergravity using tools from conformal supergravity. There are two supersymmetric invariants at the four-derivative order and we show explicitly how to write down the ...
Nikolay Bobev   +2 more
doaj   +1 more source

Comparative Study of Multiple Derivative Claim in Iranian and English Law [PDF]

open access: yesپژوهش های حقوق تطبیقی, 2022
In most legal systems, direct derivative claim has been accepted. The shareholder can thus sue on behalf of company against director, executive manager, inspector and even third parties that damaged the company.
ali tahmasebi
doaj  

Higher derivative invariants in four dimensional 𝒩 = 3 Poincaré supergravity

open access: yesJournal of High Energy Physics, 2023
In this paper we use the superconformal approach to derive the higher derivative action for 𝒩 = 3 Poincaré supergravity in four space-time dimensions. We first study the coupling of 𝒩 = 3 vector multiplets to conformal supergravity. Thereafter we combine
Subramanya Hegde   +3 more
doaj   +1 more source

Effective action, spectrum and first law of wedge holography

open access: yesJournal of High Energy Physics, 2022
In this paper, we study the effective action, the mass spectrum and the first law of entanglement entropy for a novel doubly holographic model called wedge holography. We work out the effective action of quantum gravity on the branes. In the perturbative
Peng-Ju Hu, Rong-Xin Miao
doaj   +1 more source

DERIVATIONS WITH QUANTUM GROUP ACTION [PDF]

open access: yesCommunications in Algebra, 2002
14 pages, LaTeX2e ...
openaire   +2 more sources

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