| 词汇 | string-theory |
| 释义 | string theory noun[ U ] physics specializeduk /ˈstrɪŋ ˌθɪə.ri/ us /ˈstrɪŋ ˌθɪr.i/ a theory that says that the most basic pieces of matter are extremely small lines or circles rather than points弦理论（物理学的一种理论，描述物质的最基本片段是极小的线或圆而不是点） Physics: particular theories & concepts aphelion azimuth conservation cryogenics dark matter emergence emergent kinetics momentum perigee perihelion Planck's constant quantum refraction relativistic relativity speed of sound spring constant time dilation wormhole string theory | American Dictionarystring theory noun[ C ] us/ˈstrɪŋ ˌθɪər·i, ˌθi·ə·ri/ physics a theory explaining the character of matter and the forces of the universe, based on the idea that they behave more like closed circles of string than like points Examples of string theorystring theory Stringtheory is of course, not a proven theory. The anthropic landscape of stringtheory, hep-th/ 0302219. We note that this is compatible with stringtheory, in the sense that there are a great many string vacua, which likely populate the space of low energy parameters well. These calculations are then used to determine the probabilities of various physical processes in stringtheory. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In stringtheory, a string may be open (forming a segment with two endpoints) or closed (forming a closed loop). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. D-branes are dynamical extended objects of various dimensionalities predicted by stringtheory that could play this role. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The full physics of stringtheory can always be thought of as a system of infinitely many quantum fields expanded around a given string background. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Recent developments in stringtheory suggest that the stringtheory landscape of vacua is vast. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Tachyonic fields indeed arise in many versions of stringtheory. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This is surely an indictment of something, but its relevance to stringtheory is marginal at best. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Consequently, there are no local degrees of freedom in topological stringtheory. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This is fortunate for phenomenology, as phenomenological models often use a physical stringtheory compactified on a 3 complex-dimensional space. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Stringtheory describes how strings propagate through space and interact with each other. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In stringtheory, the possibilities are much more constrained, and there are only a few consistent formulations of the theory. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It was this beta function which was apparently found before full stringtheory was developed. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. See all examples of string theory These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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