Results 231 to 240 of about 99,723 (258)
Some of the next articles are maybe not open access.
Quantum field simulator for dynamics in curved spacetime
Nature, 2022In most cosmological models, rapid expansion of space marks the first moments of the Universe and leads to the amplification of quantum fluctuations1. The description of subsequent dynamics and related questions in cosmology requires an understanding of ...
C. Viermann +11 more
semanticscholar +1 more source
Spacetime Metamaterials—Part I: General Concepts
IEEE Transactions on Antennas and Propagation, 2020This article deals with the general concepts underpinning spacetime metamaterials and related systems. It first introduces spacetime metamaterials as a generalization of (bianisotropic) metamaterials, presented in the holistic perspective of direct and ...
C. Caloz, Zoé-Lise Deck-Léger
semanticscholar +1 more source
Spacetime Metamaterials—Part II: Theory and Applications
IEEE Transactions on Antennas and Propagation, 2020The overall article presents the authors’ vision of the emerging field of spacetime metamaterials, and related systems, in a cohesive and pedagogical perspective, systematically building up the physics, modeling, and applications of these media upon the ...
C. Caloz, Zoé-Lise Deck-Léger
semanticscholar +1 more source
Erkenntnis, 2021
A number of approaches to quantum gravity (QG) seem to imply that spacetime does not exist. Philosophers are quick to point out, however, that the loss of spacetime should not be regarded as total. Rather, we should interpret these approaches as ones that threaten the fundamentality but not the existence of spacetime.
openaire +3 more sources
A number of approaches to quantum gravity (QG) seem to imply that spacetime does not exist. Philosophers are quick to point out, however, that the loss of spacetime should not be regarded as total. Rather, we should interpret these approaches as ones that threaten the fundamentality but not the existence of spacetime.
openaire +3 more sources
Proceedings of the 15th annual conference on Computer graphics and interactive techniques, 1988
Spacetime constraints are a new method for creating character animation. The animator specifies what the character has to do, for instance, "jump from here to there, clearing a hurdle in between;" how the motion should be performed, for instance "don't waste energy," or "come down hard enough
Andrew Witkin, Michael Kass
openaire +1 more source
Spacetime constraints are a new method for creating character animation. The animator specifies what the character has to do, for instance, "jump from here to there, clearing a hurdle in between;" how the motion should be performed, for instance "don't waste energy," or "come down hard enough
Andrew Witkin, Michael Kass
openaire +1 more source
International Journal of Modern Physics D, 2012
The theory of holographic spacetime (HST) generalizes both string theory and quantum field theory (QFT). It provides a geometric rationale for supersymmetry (SUSY) and a formalism in which super-Poincare invariance follows from Poincare invariance.
openaire +1 more source
The theory of holographic spacetime (HST) generalizes both string theory and quantum field theory (QFT). It provides a geometric rationale for supersymmetry (SUSY) and a formalism in which super-Poincare invariance follows from Poincare invariance.
openaire +1 more source
Proceedings of the 31st Annual ACM Symposium on User Interface Software and Technology, 2018
Spacetime is the four-dimensional manifold proposed by current physics as the arena for Nature’s show. Although Newtonian physics can very well be reformulated in a spacetime setting, the idea of spacetime was not developed until the twentieth century, in connection with Einstein’s theories of special and general relativity.
Haijun Xia +3 more
openaire +2 more sources
Spacetime is the four-dimensional manifold proposed by current physics as the arena for Nature’s show. Although Newtonian physics can very well be reformulated in a spacetime setting, the idea of spacetime was not developed until the twentieth century, in connection with Einstein’s theories of special and general relativity.
Haijun Xia +3 more
openaire +2 more sources