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We study the creation of photons in a one dimensional oscillating cavity withtwo perfectly conducting moving walls. By means of a conformal transformationwe derive a set of generalized Moore's equations whose solution contains thewhole information of the radiation field within the cavity. For the case ofresonant oscillations we solve these equations using a renormalization groupprocedure that appropriately deals with the secular behaviour present in anaive perturbative approach. We study the time evolution of the energy densityprofile and of the number of created photons inside the cavity.Comment: LaTex file, 17 pages, 3 figures, uses epsf.st

Creation of photons in an oscillating cavity with two moving mirrors