This is a very general overview of the quantum mechanics of spacetime, starting from some generalities and then moving on to more current developments in string theory.The Theory of the Quantum Worlddoi:10.1142/9789814440622_0006J. Polchinski
It is extraordinarily difficult to measure gravity over short distances, because weights that are small enough to be manipulated and held so close together only exert very weak gravitational forces. The most sensitive previous experiment tested the attraction between two masses 0.2 millimetres apart, an...
Unimodular Gravity is a theory displaying Weyl rescalings of the metric and transverse (volume-preserving) diffeomorphisms as gauge symmetries, as opposed to the full set of diffeomorphisms displayed by General Relativity. Recently, we presented a systematic comparison of both theories, concluding that ...
In the first part of my lectures (Sects. 1-6), I discuss the main motivations and directions for physics beyond the Standard Model of elementary particles and I give a short introduction on perturbative string theory. This theory introduces a new physical constant, the string length, under ...
(2.11) In four and five dimensions, the theories can be obtained from taking appropriate limit of the bosonic sector of the STU gauged supergravity models. When g1 = 0, they can be truncated consistently from supergravities and hence can be embedded in string and M-theory. 2.3 JT gravity ...
3-STRING THEORY I. BOSONIC STRING: Bosonic string; Conformal Field Theory; Quantization of the bosonic string; Interaction in string theory and the characterization of the moduli space; Bosonic strings with background fields. Stringy corrections to Einstein equations; Toroidal compactifications. $R$-...
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String Theory and Quantum Gravity 喜欢 0 阅读量: 22 年份: 1987 收藏 引用 批量引用 报错 分享 求助全文 通过文献互助平台发起求助,成功后即可免费获取论文全文。 请先登入来源期刊 日本物理學會誌 站内活动 0关于我们 百度学术集成海量学术资源,融合人工智能、深度学习、大数据分析等技术,为科研工作者提供...
634 0 49:58 App 弦理论的未来The Future of String Theory 816 1 54:02 App Dave Penneys | Levin-Wen is a gauge theory 9093 6 01:05:17 App [Edward Witten] Gauge Theory, Geometric Langlands, and All That 467 0 01:03:11 App Ibrahima Bah|Topological operators in QFT, and their fate...
sections, a braneworld setup in string theory is considered in Sec. 5. Sec. 6 is devoted to a summary of this paper and discussions. 2 Gauged ghost condensation The ghost condensation is the simplest Higgs phase of gravity in the sense that it con- ...