Browsing by Author "Ashcroft, N. W."
Now showing items 1-11 of 11
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Chemical potentials in dense charged classical or quantal systems
Moulopoulos, Konstantinos; Ashcroft, N. W. (1991)We report a general method for evaluating the partial chemical potentials of a dense neutral multicomponent system of charged particles. The results of this analysis can be directly applied to the evaluation of chemical ...
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Coulomb interactions and generalized pairing in condensed matter
Moulopoulos, Konstantinos; Ashcroft, N. W. (1999)Proceeding from a coherent-state functional-integral approach we give a first-principles theory of generalized pairing phases in a dense neutral system of electrons and protons. Apart from a standard stationary phase ...
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Curvature theorem for scattering states in charged systems
Moulopoulos, Konstantinos; Ashcroft, N. W. (1997)Under a (2,N-2) factorization assumption tor many-electron states, a curvature theorem is proposed that relates the zero-separation value and curvature of two-particle positional correlation functions in quantum many-body ...
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Erratum: New low density phase of interacting electrons: The paired electron crystal (Physical Review Letters (1993) 70, 15, (2356))
Moulopoulos, Konstantinos; Ashcroft, N. W. (1993)
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General theory of the metal-insulator transition
Moulopoulos, Konstantinos; Ashcroft, N. W. (1992)We present a general theory of the metal-insulator transition based on the formal introduction of an auxiliary irrotational gauge field and the subsequent behavior of the system in response to it. Correspondingly general ...
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Generalized Coulomb pairing in the condensed state
Moulopoulos, Konstantinos; Ashcroft, N. W. (1991)Starting with a view of condensed matter as a neutral assembly of electrons and nuclei, with mutual Coulomb interactions, a coherent-state functional-integral approach gives a first-principles theory of pairing phases that ...
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Many-body theory of paired electron crystals
Moulopoulos, Konstantinos; Ashcroft, N. W. (1993)We develop a variational many-body description of low-density three-dimensional paired electron crystals. Among the ground states of such crystals we find that coherent paired supersolids (resonant spin states) and true ...
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New low density phase of interacting electrons: The paired electron crystal
Moulopoulos, Konstantinos; Ashcroft, N. W. (1992)A variational method shows that for a range of densities the compensated low density interacting electron system possesses a ground-state crystalline phase with L=0 spin-singlet pairs and with an energy lower than the ...
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One-component charged systems as a limiting case of quantal two-component mixtures - A bifurcation procedure for a many-body system
Moulopoulos, Konstantinos; Ashcroft, N. W. (1996)The standard model problem of a three-dimensional fully interacting electron gas in a uniform compensating background is shown to result from a procedure starting at the operator leval with a fully quantum mechanical ...
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Pairing ground states in fermion systems: A static method
Moulopoulos, Konstantinos; Ashcroft, N. W. (1990)We present a static recursive method that can straightforwardly be applied to variational treatments of canonical many-body systems whose ground states generally exhibit pairing or higher clustering correlations. We ...
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Scaling relations for two-component charged systems: Application to metallic hydrogen
Moulopoulos, Konstantinos; Ashcroft, N. W. (1990)We derive exact scaling relations for the energy and pair-correlation functions of a neutral two-component system of charged nonrelativistic particles in its ground state. These are obtained under general conditions through ...