Browsing by Title
Now showing items 41838-41857 of 56882
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Quantum critical dynamics of the two-dimensional Bose gas
(American Physical Society, 2006)The dilute, two-dimensional Bose gas exhibits a novel regime of relaxational dynamics in the regime k(B)T greater than or similar to vertical bar mu vertical bar where T is the absolute temperature and mu is the chemical ... -
Quantum Critical Point Shifts under Superconductivity: the Pnictides and the Cuprates
(American Physical Society, 2010)We compare the position of an ordering transition in a metal to that in a superconductor. For the spin-density wave (SDW) transition, we find that the quantum critical point shifts by order \(\mid\Delta\mid\), where ... -
Quantum Critical Response at the Onset of Spin Density Wave Order in Two-dimensional Metals
(American Physical Society, 2011)We study the frequency dependence of the electron self-energy and the optical conductivity in a recently developed field theory of the spin-density-wave quantum phase transition in two-dimensional metals. We focus on the ... -
Quantum Critical States and Phase Transitions in the Presence of Non-Equilibrium Noise
(Nature Publishing Group, 2010)Quantum critical points are characterized by scale invariant correlations and correspondingly long-ranged entanglement. As such, they present fascinating examples of quantum states of matter, the study of which has been ... -
Quantum Critical Transport in Clean Graphene
(American Physical Society, 2008)We describe electrical transport in ideal single-layer graphene at zero applied gate voltage. There is a crossover from collisionless transport at frequencies larger than \((k_{B}T/\hbar\) (\(T\) is the temperature) to ... -
Quantum critical transport, duality, and M theory
(American Physical Society, 2007)We consider charge transport properties of 2+1 dimensional conformal field theories at nonzero temperature. For theories with only Abelian U(1) charges, we describe the action of particle-vortex duality on the hydrodynam ... -
Quantum Criticality
(American Institute of Physics, 2011)A phase transition brought on by quantum fluctuations at absolute zero may seem like an abstract theoretical idea of little practical consequence. But it is the key to explaining a wide variety of experiments. -
Quantum Criticality and Black Holes
(Institute of Physics, 2009)Many condensed matter experiments explore the finite temperature dynamics of systems near quantum critical points. Often, there are no well-defined quasiparticle excitations, and so quantum kinetic equations do not describe ... -
Quantum Criticality and the Phase Diagram of the Cuprates
(Elsevier, 2010)I discuss a proposed phase diagram of the cuprate superconductors as a function of temperature, carrier concentration, and a strong magnetic field perpendicular to the layers. I show how the phase diagram gives a unified ... -
Quantum Criticality of a Fermi Gas with a Spherical Dispersion Minimum
(American Physical Society, 2006) -
Quantum criticality of reconstructing Fermi surfaces in antiferromagnetic metals
(American Physical Society, 2013) -
Quantum Criticality of the Kagome Antiferromagnet with Dzyaloshinskii-Moriya Interactions
(American Physical Society, 2010)We investigate the zero-temperature phase diagram of the nearest-neighbor kagome antiferromagnet in the presence of Dzyaloshinksii-Moriya interaction. We develop a theory for the transition between \(Z_2\) spin liquids ... -
Quantum Criticality of U(1) Gauge Theories with Fermionic and Bosonic Matter in Two Spatial Dimensions
(American Physical Society, 2008)We consider relativistic \(U(1)\) gauge theories in \(2+1\) dimensions, with \(N_b\) species of complex bosons and \(N_f\) species of Dirac fermions at finite temperature. The quantum phase transition between the Higgs and ... -
Quantum Degenerate Mixtures of Alkali and Alkaline-earth-like Atoms
(American Physical Society, 2011)We realize simultaneous quantum degeneracy in mixtures consisting of the alkali and alkalineearth-like atoms Li and Yb. This is accomplished within an optical trap by sympathetic cooling of the fermionic isotope \(^6\)Li ... -
Quantum Diamond Microscopes for Biological Systems and Integrated Circuits
(2020-09-10)Nitrogen-Vacancy (NV) centers are atom-like point defects in diamond that have been utilized for applications in biological systems, integrated circuits, materials science, geoscience, positioning and navigation, quantum ... -
Quantum Diffusion for the Anderson Model in the Scaling Limit
(Springer Nature, 2007)We consider random Schrödinger equations on ℤdZd for d ≥ 3 with identically distributed random potential. Denote by λ the coupling constant and ψt the solution with initial data ψ0. The space and time variables scale as ... -
Quantum diffusion of the random Schrödinger evolution in the scaling limit
(International Press of Boston, 2008)We consider random Schrödinger equations on Rd for d ≽ 3 with a homogeneous Anderson–Poisson type random potential. Denote by λ the coupling constant and ψtψt the solution with initial data ψ0ψ0 . The space and time ... -
Quantum Diffusion of the Random Schrödinger Evolution in the Scaling Limit II. The Recollision Diagrams
(Springer Nature, 2007)We consider random Schrödinger equations on {mathbb{R}d} for d≥ 3 with a homogeneous Anderson-Poisson type random potential. Denote by λ the coupling constant and ψ t the solution with initial data ψ0. The space and time ... -
Quantum dimer model for the pseudogap metal
(Proceedings of the National Academy of Sciences, 2015)We propose a quantum dimer model for the metallic state of the hole-doped cuprates at low hole density, p. The Hilbert space is spanned by spinless, neutral, bosonic dimers and spin S=1/2S=1/2, charge +e+e fermionic dimers. ... -
Quantum dot/antibody conjugates for in vivo cytometric imaging in mice
(National Academy of Sciences, 2015)Multiplexed, phenotypic, intravital cytometric imaging requires novel fluorophore conjugates that have an appropriate size for long circulation and diffusion and show virtually no nonspecific binding to cells/serum while ...