Electromagnetic and gravitational radiation in all dimensions: A classical field theory treatment
نویسندگان
چکیده
How long does a light bulb shine in odd dimensional flat spacetimes, according to distant observer? This question is nontrivial because electromagnetic and gravitational waves, despite being comprised of massless particles, can develop tails; they travel inside the cone. To this end, I attempt close gap literature by first deriving, strictly within classical field theory, real-time dipole quadrupole energy angular momentum radiation formulas all relevant dimensions. The even-dimensional case, where signals on null cone, depends time derivatives dipoles quadrupoles solely at retarded time, whereas odd-dimensional ones involve an integral over their histories. Despite propagation however, argue that monochromatic some intrinsic duration dimensions remains approximately same apparent detector, though tail effect produce phase shift adds signal several transitory nonoscillatory inverse square roots time. Analogous remarks apply wave detector hearing from finite quasiperiodic source.
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ژورنال
عنوان ژورنال: Physical review
سال: 2021
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevd.104.084074