منابع مشابه
Closed string radiation from moving D-branes
We compute the amplitude for the radiation of massless NS-NS closed string states from the interaction of two moving D-branes. We consider particle-like D-branes with reference to 4-dimensional spacetime, in toroidal and orbifold compactifications, and we work out the relevant world sheet propagators within the moving boundary state formalism. We find no onshell axion emission. For large inter-...
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Coherent terahertz and millimeter wave radiation from laser accelerated electron bunches has been measured. The bunches were produced by tightly focusing ~spot diameter '6 mm) a high peak power ~up to 10 TW!, ultra-short (>50 fs) laser pulse from a high repetition rate ~10 Hz! laser system ~0.8 mm!, onto a high density (.10 cm) pulsed gas jet of length '1.5 mm. As the electrons exit the plasma,...
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The electromagnetic field associated with a uniformly accelerated charge is studied in some detail. The equivalence principle paradox that the co-accelerating observer measures no radiation while a freely falling observer measures the standard radiation of an accelerated charge is resolved by noting that all the radiation goes into the region of space time inaccessible to the co-accelerating ob...
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We investigate the Hawking radiation of black p-branes of superstring theories using the method of anomaly cancelation, specially, we use the method of [S. Iso, H. Umetsu and F. Wilczek, Phys. Rev. Lett. 96, 151302 (2006); Phys. Rev. D 74, 044017 (2006)]. The metrics of black p-branes are spherically symmetric, but not the Schwarzschild type. In order to simplify the calculation, we first make ...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2000
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.61.106007