Ghosh, Subir - In: Physica A: Statistical Mechanics and its Applications 407 (2014) C, pp. 245-251
The possibility of Spontaneous Symmetry Breaking in momentum space in a generic Lifshitz scalar model–a non-relativistic scalar field theory with higher spatial derivative terms–has been studied. We show that the minimum energy state, the ground state, has a lattice structure, where the...