Results 11 to 20 of about 179 (91)
Modern Physics Letters A, 1990 We show that Einstein's gravity can be induced from a topological sigma model.
FLOREANINI R, Percacci, Roberto
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The Constructivist's Programme and the Problem of Pregeometry [PDF]
, 2021 Prominently, Norton (2008) argues against constructivism about spacetime theories, the doctrine that spatiotemporal structure in the dynamics only has derivative status. Among other things, he accuses Brown and Pooley's dynamical approach to special relativity of being merely half-way constructivist: setting up relativistic fields as presupposed in the
Linnemann, Niels, Salimkhani, Kian
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Supersimple ω-categorical theories and pregeometries [PDF]
Annals of Pure and Applied Logic, 2019 23 ...
Koponen, Vera,
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Finite temperature spinor pregeometry [PDF]
Physics Letters B, 1983 We obtain the Einstein and Yang-Mills actions as induced actions. Free fermion fields are considered as the only fundamental pregeometric objects. We study in detail the temperature behaviour of the induced Newton and gauge coupling constants. Both of them are seen to decrease as the temperature grows.
G. Denardo, SPALLUCCI, EURO
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Finite-temperature scalar pregeometry [PDF]
Il Nuovo Cimento A, 1983 We study the temperature corrections to the induced Newton constant. We obtain the Einstein action from an effective action of matter at finite temperature by means of the heat kernel expansion method. We find that the induced gravitational constant decreases as the temperature becomes higher.
G. Denardo, E. Spallucci
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Automorphisms, flats and erections of pregeometries [PDF]
, 1973 We characterize pregeometries in terms of their flats - giving necessary and sufficient conditions for a collection of sets to be the flats of a pregeometry. We begin a systematic study of automorphisms of pregeometries; arguing geometrically, we obtain the (known) factorization of a pregeometry into component pregeometries, and express the ...
Roberts, Leigh Alan (11658667)
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Quantum metric spaces as a model for pregeometry [PDF]
Physical Review D, 1992 A new arena for the dynamics of spacetime is proposed, in which the basic quantum variable is the two-point distance on a metric space. The scaling dimension (that is, the Kolmogorov capacity) in the neighborhood of each point then defines in a natural way a local concept of dimension.
Alvarez Lacalle, Enrique +2 more
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Pregeometry, Formal Language, and Constructivist Foundations of Physics [PDF]
How does one formalize the structure of structures necessary for the foundations of physics? This work is an attempt at conceptualizing the metaphysics of pregeometric structures, upon which new and existing notions of quantum geometry may find a foundation.
Arsiwalla, Xerxes D. +2 more
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Heritability of Types of Pregeometry with Respect to Compositions of Structures
Известия Иркутского государственного университета: Серия "Математика"In this paper, we investigate how the pregeometry arising from the composition of two predicate signature structures inherits the types of pregeometries of the original stuctures.
S. B. Malyshev
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On closure operators of Jonsson sets [PDF]
Қарағанды университетінің хабаршысы. Математика сериясыThe work is related to the study of the model-theoretic properties of Jonsson theories, which, generally speaking, are not complete. In the article, on the Boolean of Jonsson subsets of the semantic model of some fixed Jonsson theory, the concept of the
Olga Ulbrikht
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