Results 31 to 40 of about 500,941 (94)
Similarity accounts of counterfactuals: A reality check1
Philosophy and Phenomenological Research, EarlyView.Abstract To an unusual extent, philosophers agree that counterfactuals have truth conditions involving the most similar possible worlds where their antecedents are true, in the style of the celebrated and path‐breaking Stalnaker/Lewis accounts. Roughly, these accounts say that the counterfactual if A were the case, C would be the case is true if and ...
Alan Hájek
wiley +1 more source
Mixmaster quantum cosmology in terms of physical dynamics [PDF]
arXiv, 1996 An approach to quantum cosmology, relying on strengths of both canonical and path integral formalisms, is applied to the cosmological model, Bianchi type IX. Physical quantum states are constructed on the maximal slice of the cosmological history. A path integral is derived which evolves observables off the maximal slice. This result is compared a path
arxiv
Quantum Reduced Loop Gravity and the foundation of Loop Quantum Cosmology [PDF]
, 2016 Quantum Reduced Loop Gravity is a promising framework for linking Loop Quantum Gravity and the effective semiclassical dynamics of Loop Quantum Cosmology. We review its basic achievements and its main perspectives, outlining how it provides a quantum description of the Universe in terms of a cuboidal graph which constitutes the proper framework for ...
arxiv +1 more source
Anthropology and change over the ‘land rights era’: Towards treaties?
The Australian Journal of Anthropology, EarlyView.Abstract Australia has made no treaties with its Indigenous peoples. Despite that, over the past five decades (the ‘land rights era’ of the title), Australia has granted proportionally more land area to Indigenous interests than have other, treaty‐making Anglo settler colonies (Canada, the United States, New Zealand). Despite complexities of comparison
Francesca Merlan
wiley +1 more source
Place as a Metaphysical Problem in Albert the Great and Thomas Aquinas
Modern Theology, Volume 41, Issue 2, Page 292-310, April 2025.Abstract Thomas Aquinas’ particular synthesis of Aristotelianism and Neoplatonism, and the intellectual tradition it inaugurated, has at least twice faced critical challenges from developments in physics. Besieged by the sixteenth and seventeenth century novatores and more or less ignored by the nineteenth‐ and twentieth‐century practitioners of ...
Onsi Aaron Kamel
wiley +1 more source
Quantum cosmology and eternal inflation [PDF]
arXiv, 2002 This contribution consists of two parts. In the first part, I review the tunneling approach to quantum cosmology and comment on the alternative approaches. In the second part, I discuss the relation between quantum cosmology and eternal inflation. In particular, I discuss whether or not we need quantum cosmology in the light of eternal inflation, and ...
arxiv
From the conformal anomaly to the Virasoro algebra
Proceedings of the London Mathematical Society, Volume 130, Issue 4, April 2025.Abstract The conformal anomaly and the Virasoro algebra are fundamental aspects of two‐dimensional conformal field theory and conformally covariant models in planar random geometry. In this article, we explicitly derive the Virasoro algebra from an axiomatization of the conformal anomaly in terms of real determinant lines, one‐dimensional vector spaces
Sid Maibach, Eveliina Peltola
wiley +1 more source
Quantum Cosmology in Four Dimensions [PDF]
, 2015 We analyze the cosmological solutions to the recently proposed nonlocal quantum effective action for gravity with a cosmological term. We show that the vacuum energy decays with a slow-roll parameter proportional to the anomalous gravitational dressings.
arxiv +1 more source
Fortschritte der Physik, Volume 73, Issue 3, March 2025.Abstract Current observations show that a significant fraction of the Universe is composed of dark energy and dark matter. In this paper, the simultaneous effects of these dark sectors on the Euler–Heisenberg black hole are investigated, using the quintessence matter field and perfect fluid to model them. In particular, the black hole's thermodynamics,
Bilel Hamil, Bekir Can Lütfüoğlu
wiley +1 more source
Quantum-theoretical description of the cosmological constant as the zero-point energy [PDF]
arXiv, 2007 The present paper seeks to construct a quantum theory of the cosmological constant in which its presently observed very small value emerges naturally.
arxiv