Results 1 to 10 of about 748,900 (322)

Variability of fundamental constants

, 2002
If the fine structure constant is not really constant, is this due to a variation of $e$, $\hbar$, or $c$? It is argued that the only reasonable conclusion is a variable speed of light.Comment: preliminary draft, comments ...
ASHER PERES, Einstein A., Einstein A., Einstein A., Schouten J. A.   +4 more
core   +1 more source

Self-Dual Action for Fermionic Fields and Gravitation [PDF]

, 1995
This paper studies the self-dual Einstein-Dirac theory. A generalization is obtained of the Jacobson-Smolin proof of the equivalence between the self-dual and Palatini purely gravitational actions. Hence one proves equivalence of self-dual Einstein-Dirac
A. Ashtekar, A. Ashtekar, B. P. Dolan, C. Rovelli, F. W. Hehl, F. W. Hehl, G. Esposito, Giampiero Esposito, Hugo A. Morales-Técotl, J. E. Nelson, P. A. M. Dirac, R. Floreanini, R. Penrose, R. Penrose, T. Jacobson, T. Jacobson, T. W. B. Kibble   +16 more
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Doubly Special Relativity with a minimum speed and the Uncertainty Principle

, 2017
The present work aims to search for an implementation of a new symmetry in the space-time by introducing the idea of an invariant minimum speed scale ($V$).
CLÁUDIO NASSIF, Einstein A., Einstein A., Einstein A., Einstein A., Einstein A., Einstein A., FitzGerald G. F., Jordan P., Kaluza T., Licata I., Mach E., Magueijo J., Poincaré H., Schrödinger E.   +14 more
core   +1 more source

ZUR ELEKTRODYNAMIK BEWEGTER KÖRPER (facsimile)

Revista Brasileira de História da Matemática, 2020
ZUR ELEKTRODYNAMIK BEWEGTER KÖRPER  (facsimile)
Albert Einstein
doaj   +1 more source

Lorentz group theory and polarization of the light

, 2011
Some facts of the theory of the Lorentz group are specified for looking at the problems of light polarization optics in the frames of vector Stokes-Mueller and spinor Jones formalism.
A. Einstein, A. Einstein, V. M. Red’kov   +2 more
core   +1 more source

“El cántaro” o la creatividad de lo vacuo en la poesía de José Ángel Valente

Arbor: Ciencia, Pensamiento y Cultura, 2007
A través del comentario de “El cántaro”, uno de los poemas más importantes del Valente de Poemas a Lázaro (1960), se estudia la importancia de la androginia en la poesía y en la poética valentianas.
José Andrés Calvo Rodríguez
doaj   +1 more source

Einstein and Tagore, Newton and Blake, Everett and Bohr: the dual nature of reality [PDF]

, 2012
There are two broad opposing classes of attitudes to reality (realist vs idealist, material vs mental) with corresponding attitudes to knowledge (objective vs subjective, scientific vs romantic).
Sudbery, Anthony
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Symmetries of the Einstein Equations [PDF]

, 1993
Generalized symmetries of the Einstein equations are infinitesimal transformations of the spacetime metric that formally map solutions of the Einstein equations to other solutions. The infinitesimal generators of these symmetries are assumed to be local,
Anderson, I. M., Torre, C. G.
core   +6 more sources

Unexplored avenues: a narrative review of cognition and mood in postmenopausal African women with female genital circumcision/mutilation/cutting

Frontiers in Global Women's Health
Recent ageing research has projected the lifespan and proportion of postmenopausal women living in low- and middle-income countries to substantially increase over the years, especially on the African continent.
Rohina Kumar, Noelia Calvo, Gillian Einstein, Gillian Einstein, Gillian Einstein, Gillian Einstein, Gillian Einstein, Gillian Einstein   +7 more
doaj   +1 more source

Distances of qubit density matrices on Bloch sphere

, 2011
We recall the Einstein velocity addition on the open unit ball $\B$ of $\R^{3}$ and its algebraic structure, called the Einstein gyrogroup. We establish an isomorphism between the Einstein gyrogroup on $\B$ and the set of all qubit density matrices ...
Einstein A., Friedman Y., Sejong Kim, Zhu K.   +3 more
core   +1 more source