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Motivated by activities of several experimental groups we investigateelectron transport through two coherent, strongly coupled quantum dots ("doublequantum dots"), taking into account both intra- and inter-dot Coulombinteractions. The shot noise in this system is very sensitive to the internalelectronic level structure of the coupled dot system and its specific couplingto the electrodes. Accordingly a comparison between experiments and ourpredictions should allow for a characterization of the relevant parameters. Wediscuss in detail the effect of asymmetries, either asymmetries in thecouplings to the electrodes or a detuning of the quantum dot levels out ofresonance with each other. In the Coulomb blockade region super-Poissoniannoise appears even for symmetric systems. For bias voltages above thesequential tunneling threshold super-Poissonian noise and regions of negativedifferential conductance develop if the symmetry is broken sufficientlystrongly.Comment: 11 pages, 8 figures, submitted to PR

Shot noise in transport through two coherent strongly coupled quantum dots