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Titlebook: Cosmology Beyond Einstein; Adam Ross Solomon Book 2017 Springer International Publishing AG 2017 Massive Gravity.Bimetric Gravity.Massive

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發(fā)表于 2025-3-21 18:58:26 | 只看該作者 |倒序瀏覽 |閱讀模式
書目名稱Cosmology Beyond Einstein
編輯Adam Ross Solomon
視頻videohttp://file.papertrans.cn/239/238927/238927.mp4
概述Nominated as an outstanding PhD thesis by the University of Cambridge, UK.An exceptionally clear presentation of one of physics‘ major frontiers.Investigates modified gravity from both theoretical and
叢書名稱Springer Theses
圖書封面Titlebook: Cosmology Beyond Einstein;  Adam Ross Solomon Book 2017 Springer International Publishing AG 2017 Massive Gravity.Bimetric Gravity.Massive
描述This work investigates the theoretical and cosmological implications of modifying Einstein‘s theory of general relativity. It explores two classes of modifications to gravity: those in which the graviton is given a small mass, and those in which Lorentz invariance is spontaneously broken. It elucidates the nature of cosmological perturbations in theories of massive bimetric gravity, including a potentially deadly instability. Theories of gravity beyond general relativity could explain why the expansion of the Universe is accelerating, obviating the need for a dark energy, and can also affect the evolution of the early Universe. Next, it investigates the nature of spacetime in massive gravity theories that contain two different spacetime metrics. Lastly, the strongest constraints to date are placed on the size of Lorentz-violating effects in the gravity sector during inflation..?.
出版日期Book 2017
關(guān)鍵詞Massive Gravity; Bimetric Gravity; Massive Bigravity; Modified Gravity; Einstein-Aether Theory; Lorentz V
版次1
doihttps://doi.org/10.1007/978-3-319-46621-7
isbn_softcover978-3-319-83549-5
isbn_ebook978-3-319-46621-7Series ISSN 2190-5053 Series E-ISSN 2190-5061
issn_series 2190-5053
copyrightSpringer International Publishing AG 2017
The information of publication is updating

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發(fā)表于 2025-3-21 23:44:08 | 只看該作者
Gravity Beyond General Relativity,ical solutions, culminating in a discussion of two key aspects of the cosmological standard model: .CDM at late times and inflation at early times. In this chapter, we extend that discussion to theories of gravity beyond general relativity, and in particular the theories which will receive our atten
板凳
發(fā)表于 2025-3-22 03:49:37 | 只看該作者
Cosmological Stability of Massive Bigravity, is given a small mass. In particular, by specialising to the dRGT interaction potentials (.) we ensure that the notorious Boulware-Deser ghost mode is absent, and by allowing both metrics to be dynamical and taking the graviton mass to be of the order of the present-day Hubble rate, we can obtain
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發(fā)表于 2025-3-22 05:03:50 | 只看該作者
Linear Structure Growth in Massive Bigravitysolutions in Chap.?.. In addition to introducing the formalism for cosmological perturbation theory in bigravity, the specific aim of the previous chapter was to identify which models are stable at the linear level and which are not. The natural next step is to use perturbation theory to derive obse
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發(fā)表于 2025-3-22 22:14:41 | 只看該作者
Discussion and Conclusions and cosmological implications of endowing the graviton with a finite mass, leading to theories either of ., in which there is a single, massive graviton, or ., in which two gravitons, one massless and the other massive, interact with each other.
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發(fā)表于 2025-3-23 08:44:04 | 只看該作者
Soziodemographische Struktur der Stichproben this chapter, we extend that discussion to theories of gravity beyond general relativity, and in particular the theories which will receive our attention in this thesis: massive gravity, massive bigravity, and Einstein-aether theory.
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