例句與造句

1. The same goes for making classical mechanics, or electromagnetism background independent.
2. He argues that more attention should instead be paid to background independent theories of quantum gravity.
3. Progress has been made in calculating background independent scattering amplitudes this way with the use of spin foams.
4. Vasiliev's equations are background independent, the simplest exact solution being anti-de Sitter space.
5. One of the main criticisms of string theory from early on is that it is not manifestly background independent.
6. It's difficult to find background independent in a sentence. 用background independent造句挺難的
7. The difficulty in achieving a truly background independent formulation for string theory is demonstrated by a problem known as Witten's Puzzle.
8. It is closely related to background independent quantum gravity approaches such as loop quantum gravity, the spin foam formalism and causal dynamical triangulation.
9. Quantum gravity is believed to be background-independent ( in some suitable sense ), and TQFTs provide examples of background independent quantum field theories.
10. They're both background independent ( I often get this part reversed ) implementations of quantized spacetime . they both result in what i would call " artifice " matter.
11. In classical mechanics and non-relativistic QM, time is an absolute quantity all observers and particles can always agree on, " ticking away " in the background independent of space.
12. One of the fundamental properties of Einstein's general theory of relativity is that it is background independent, meaning that the formulation of the theory does not in any way privilege a particular spacetime geometry.
13. While AQG is inspired by LQG, it differs drastically from it because in AQG there is fundamentally no topology or differential structure  it is background independent in a more generalized sense and could possibly have something to say about topology change.
14. Summarizing this, Rickles writes : " Background structures are contrasted with dynamical ones, and a background independent theory only possesses the latter type obviously, background dependent theories are those possessing the former type in addition to the latter type . ".
15. Perturbative string theory ( in addition to a number of non-perturbative formulations ) is not ` obviously'background independent, because it depends on boundary conditions at infinity, similarly to how perturbative general relativity is not ` obviously'background dependent.
16. However some sectors of string theory admit formulations in which background independence is manifest, including most notably the AdS / CFT . It is believed that string theory is background independent in general, even if many useful formulations do not make it manifest.
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