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18 papers · 1 filter
Dissipative Effects on Quantum Sticking
Yanting Zhang, Dennis P. Clougherty
Using variational mean-field theory, many-body dissipative effects on the threshold law for quantum sticking and reflection of neutral and charged particles are examined. For the c…
Topological Catastrophe and Isostructural Phase Transition in Calcium
Travis E. Jones, Mark E. Eberhart, Dennis P. Clougherty
We predict a quantum phase transition in fcc Ca under hydrostatic pressure. Using density functional theory, we find at pressures below 80 kbar, the topology of the electron charge…
Electron-Electron Interactions in Graphene: Current Status and Perspectives
Valeri N. Kotov, Bruno Uchoa, Vitor M. Pereira +2
We review the problem of electron-electron interactions in graphene. Starting from the screening of long range interactions in these systems, we discuss the existence of an emergin…
Thermodynamics of a gas of deconfined bosonic spinons in two dimensions
Anders W. Sandvik, Valeri N. Kotov, Oleg P. Sushkov
We consider the quantum phase transition between a Neel antiferromagnet and a valence-bond solid (VBS) in a two-dimensional system of S=1/2 spins. Assuming that the excitations of…
Toward an Empirical Theory of Pulsar Emission. IX. On the Peculiar Properties and Geometric Regularity of Lyne & Manchester's "Partial Cone" Pulsars
Dipanjan Mitra, Joanna. M. Rankin
Lyne & Manchester (1988) identified a group of some 50 pulsars they called "partial cones" which they found difficult to classify and interpret. They were notable for their asymmet…
Fully Localized Two-dimensional Embedded Solitons
Jianke Yang
We report the first prediction of fully localized two-dimensional embedded solitons. These solitons are obtained in a quasi-one-dimensional waveguide array which is periodic along…