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The physics of moduli fields is examined in the scenario where the gravitinois relatively heavy with mass of order 10 TeV, which is favored in view of thesevere gravitino problem. The form of the moduli superpotential is shown to bedetermined, if one imposes a phenomenological requirement that no physical CPphase arise in gaugino masses from conformal anomaly mediation. This bottom-upapproach allows only two types of superpotential, each of which can have itsorigins in a fundamental underlying theory such as superstring. Onesuperpotential is the sum of an exponential and a constant, which is identicalto that obtained by Kachru et al (KKLT), and the other is the racetracksuperpotential with two exponentials. The general form of soft supersymmetrybreaking masses is derived, and the pattern of the superparticle mass spectrumin the minimal supersymmetric standard model is discussed with the KKLT-typesuperpotential. It is shown that the moduli mediation and the anomaly mediationmake comparable contributions to the soft masses. At the weak scale, thegaugino masses are rather degenerate compared to the minimal supergravity,which bring characteristic features on the superparticle masses. In particular,the lightest neutralino, which often constitutes the lightest superparticle andthus a dark matter candidate, is a considerable admixture of gauginos andhiggsinos. We also find a small mass hierarchy among the moduli, gravitino, andsuperpartners of the standard-model fields. Cosmological implications of thescenario are briefly described.Comment: 45 pages, 10 figures, typos correcte

Bottom-up approach to moduli dynamics in heavy gravitino scenario: Superpotential, soft terms, and sparticle mass spectrum