منابع مشابه
Galilean-invariant scalar fields can strengthen gravitational lensing.
The mystery of dark energy suggests that there is new gravitational physics on long length scales. Yet light degrees of freedom in gravity are strictly limited by Solar System observations. We can resolve this apparent contradiction by adding a Galilean-invariant scalar field to gravity. Called Galileons, these scalars have strong self-interactions near overdensities, like the Solar System, tha...
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The Galileo spacecraft’s magnetometer data allowed for an understanding of the Galilean satellites’ internal magnetic fields. My objective was to learn the nature of these fields and see if they are consistent with geological and observational data by reviewing all relevant papers and seeking parallels or inconsistencies between them. The results show that Europa and Callisto have internal brin...
متن کاملFields on Paracompact Manifold and Anomalies
Abstract In Continuum Light Cone Quantization (CLCQ) the treatment of scalar fields as operator valued distributions and properties of the accompanying test functions are recalled. Due to the paracompactness property of the Euclidean manifold these test functions appear as decomposition of unity. The approach is extended to QED Dirac fields in a gauge invariant way. With such test functions the...
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In the history of sciences, some apparently independent questions often have received the same answer. For example, the questions “What does make apples fall off trees?”, “What does make planets revolve around the Sun?”, “What does make matter hold together in a star?” all have received the same answer: “gravity”. When this happens, we can say that the concepts used in this answer structure a f...
متن کاملOn Galilean Isometries
Quite recently, Carter and Khalatnikov [CK] have pointed out that a geometric fourdimensional formulation of the non relativistic Landau theory of perfect superfluid dynamics should involve not only Galilei covariance but also, more significantly as far as gravitational effects are concerned, covariance under a larger symmetry group which they call the Milne group after Milne’s pioneering work ...
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ژورنال
عنوان ژورنال: SciPost Physics
سال: 2018
ISSN: 2542-4653
DOI: 10.21468/scipostphys.5.1.005