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We consider the possibility of quantum phase transitions in the ground stateof triplet superconductors where particle density is the tunning parameter. Fordefiniteness, we focus on the case of one band quasi-one-dimensional tripletsuperconductors but many of our conclusions regarding the nature of thetransition are quite general. Within the functional integral formulation, wecalculate the electronic compressibility and superfluid density tensor as afunction of the particle density for various triplet order parameter symmetriesand find that these quantities are non-analytic when a critical value of theparticle density is reached.Comment: 4 pages, 3 figure

Density-induced quantum phase transitions in the ground state of triplet superconductors